Prior art — US Patent 11857064

To identify the most relevant prior art for US patent 11857064, I will examine the "Citations" section of the patent document, which lists prior art cited by the examiner and third parties.

Here's an analysis of the patent citations listed for US11857064:

1. US2743894A

Full Citation: US2743894A, Ostnas Anders Kristoffer Arne, "Quick detachable article carriers"
Publication Date: 1956-05-01
Brief Description: This patent describes quick detachable article carriers.
Potential Anticipation (35 U.S.C. § 102): This patent might anticipate claims related to a system for removably attaching articles or tools, particularly general concepts of quick detachment. Without more detail, it's hard to specify which claims; however, it generally addresses the broad concept of a "tool attachment system" and "removably coupled" aspects mentioned in claims 1 and 16.

2. US2990987A

Full Citation: US2990987A, Handler Elliot, "Swivel holster"
Publication Date: 1961-07-04
Brief Description: This patent describes a swivel holster.
Potential Anticipation (35 U.S.C. § 102): This patent potentially anticipates claims related to pivotal coupling and swiveling action, specifically claim 2 and claim 17 which refer to the tool attachment device being pivotally coupled to the receiver such that it pivots about an axis perpendicular to a front face of the channel.

3. DE7810070U1

Full Citation: DE7810070U1, Carl Hepting & Co, Lederwaren- Und Guertelfabrik, Gmbh, 7000 Stuttgart, "HOLSTER FOR CARRYING HANDGUNS"
Publication Date: 1978-07-20
Brief Description: This patent describes a holster for carrying handguns.
Potential Anticipation (35 U.S.C. § 102): Similar to US2743894A, this patent broadly relates to carrying articles on a belt. It could potentially anticipate the general idea of a "receiver configured to attach to a belt of a user" in claims 1 and 16, and the "pouch coupled to the body" in claims 1 and 16, if the holster includes such features.

4. DE3027550A1

Full Citation: DE3027550A1, Richard Kropac - Lederwarenfabrikation-Osterholz-Scharmbeck, Inhaberin Barbara Jenner, 2860 Osterholz-Scharmbeck, "Quick-draw gun holster has pivoting attachment - for sitting in automobile but stiff pivot joint to give firm support"
Publication Date: 1982-03-11
Brief Description: This patent describes a quick-draw gun holster with a pivoting attachment.
Potential Anticipation (35 U.S.C. § 102): This patent, like US2990987A, appears highly relevant to the pivoting features. It could potentially anticipate claims 2 and 17, which detail the pivotal coupling of the tool attachment device to the receiver. The description also mentions "stiff pivot joint to give firm support," which relates to the stability aspects of the present invention.

5. US4419794A

Full Citation: US4419794A, Repco Incorporated, "Portable fastening device"
Publication Date: 1983-12-13
Brief Description: This patent describes a portable fastening device.
Potential Anticipation (35 U.S.C. § 102): This broad category of "portable fastening device" could potentially anticipate the general concept of removably coupling a tool attachment device to a receiver, as described in claims 1 and 16. Specific elements would need closer examination.

6. US4718586A

Full Citation: US4718586A, Kiyohiko Hagino, "Swivel fastening device"
Publication Date: 1988-01-12
Brief Description: This patent describes a swivel fastening device.
Potential Anticipation (35 U.S.C. § 102): Similar to US2990987A and DE3027550A1, this patent is relevant to the swivel or pivotal coupling mentioned in claims 2 and 17.

7. US4721276A

Full Citation: US4721276A, Ernest Moss, "Pivoting beverage dock"
Publication Date: 1988-01-26
Brief Description: This patent describes a pivoting beverage dock.
Potential Anticipation (35 U.S.C. § 102): This patent, while for a beverage dock, still presents a "pivoting" mechanism, which could be relevant to claims 2 and 17 regarding pivotal coupling.

8. DE8810011U1

Full Citation: DE8810011U1, Albrecht Kind Gmbh & Co, 5270 Gummersbach, "Device for carrying a handgun on the trouser belt"
Publication Date: 1988-09-22
Brief Description: This patent describes a device for carrying a handgun on a trouser belt.
Potential Anticipation (35 U.S.C. § 102): Similar to DE7810070U1, this broadly addresses belt-attachment for articles, potentially relevant to the "receiver configured to attach to a belt of a user" and "pouch coupled to the body" aspects of claims 1 and 16.

9. US5014892A

Full Citation: US5014892A, Copeland Anthony S, "Camera belt clip"
Publication Date: 1991-05-14
Brief Description: This patent describes a camera belt clip.
Potential Anticipation (35 U.S.C. § 102): A belt clip for a camera suggests a removable attachment to a belt, and could potentially anticipate general features of the receiver and tool attachment device in claims 1 and 16.

10. US5054170A

Full Citation: US5054170A, Otrusina Edward C, "Connector engageable in multiple positions and releasable in only one position"
Publication Date: 1991-10-08
Brief Description: This patent describes a connector engageable in multiple positions and releasable in only one position.
Potential Anticipation (35 U.S.C. § 102): This patent could be highly relevant to the locking mechanism and release action. The "releasable in only one position" aspect could anticipate the specific single-action release described in claims 1 and 16, where applying force to the actuator releases the locking mechanism and disengages the device.

11. US5163591A

Full Citation: US5163591A, Leiserson Steven G, "Paint bucket holster"
Publication Date: 1992-11-17
Brief Description: This patent describes a paint bucket holster.
Potential Anticipation (35 U.S.C. § 102): This broadly relates to a holder for tools/items (a paint bucket), which could relate to the "pouch coupled to the body... configured to support a tool" element in claims 1 and 16.

12. US5201858A

Full Citation: US5201858A, Otrusina Edward C, "Quick-release connector"
Publication Date: 1993-04-13
Brief Description: This patent describes a quick-release connector.
Potential Anticipation (35 U.S.C. § 102): This patent, similar to US5054170A, is highly relevant to the quick-release mechanism. It could anticipate the combined action of the actuator releasing the locking mechanism and disengaging the tool attachment device as described in claims 1 and 16.

13. US5319349A

Full Citation: US5319349A, Smith Iii Frank E, "Pager safety system"
Publication Date: 1994-06-07
Brief Description: This patent describes a pager safety system.
Potential Anticipation (35 U.S.C. § 102): While for a pager, the system likely involves a belt attachment and a mechanism for securement and release, which could potentially anticipate general features of claims 1 and 16 regarding removable coupling and a locking mechanism.

14. US5597102A

Full Citation: US5597102A, Nokia Mobile Phones Ltd., "Attachment device for a mobile station"
Publication Date: 1997-01-28
Brief Description: This patent describes an attachment device for a mobile station.
Potential Anticipation (35 U.S.C. § 102): This patent likely involves a belt attachment for a mobile device, which could anticipate elements of claims 1 and 16 concerning a receiver attaching to a belt and a device removably coupled to it.

15. US5598958A

Full Citation: US5598958A, Ryan, Iii; Willis N., "Competition holsters"
Publication Date: 1997-02-04
Brief Description: This patent describes competition holsters.
Potential Anticipation (35 U.S.C. § 102): Holsters, especially competition holsters, often feature quick-release and securement mechanisms. This could potentially anticipate aspects of the locking mechanism, actuator, and removable coupling described in claims 1 and 16.

16. US5622296A

Full Citation: US5622296A, Pirhonen; Ilkka, "Releasable swivel holder for personal articles"
Publication Date: 1997-04-22
Brief Description: This patent describes a releasable swivel holder for personal articles.
Potential Anticipation (35 U.S.C. § 102): This patent explicitly mentions "releasable swivel holder," making it highly relevant to the pivotal coupling (claims 2, 17) and the removable coupling (claims 1, 16) and potentially the release mechanism of the current patent.

17. US5664292A

Full Citation: US5664292A, E Lead Electronic Co., Ltd., "Separable clip assembly"
Publication Date: 1997-09-09
Brief Description: This patent describes a separable clip assembly.
Potential Anticipation (35 U.S.C. § 102): A "separable clip assembly" is directly related to the concept of a tool attachment system that can be removably coupled. This could potentially anticipate aspects of the overall system and the removable coupling in claims 1 and 16.

18. US5779115A

Full Citation: US5779115A, Nokia Mobile Phones, Ltd., "Carrying device for mobile station"
Publication Date: 1998-07-14
Brief Description: This patent describes a carrying device for a mobile station.
Potential Anticipation (35 U.S.C. § 102): Similar to US5597102A, this broadly addresses carrying devices, potentially anticipating general features of the receiver and tool attachment device in claims 1 and 16.

19. US5850996A

Full Citation: US5850996A, Two Thousand And One Technology, Inc., "Mobile telephone hanging device"
Publication Date: 1998-12-22
Brief Description: This patent describes a mobile telephone hanging device.
Potential Anticipation (35 U.S.C. § 102): This likely involves a belt or similar attachment for a phone, which could relate to the general concept of attaching an item to a user, as in claims 1 and 16.

20. US5983686A

Full Citation: US5983686A, Lee; Geon W., "Belt attachment and key ring/key holder"
Publication Date: 1999-11-16
Brief Description: This patent describes a belt attachment and key ring/key holder.
Potential Anticipation (35 U.S.C. § 102): This patent is directly related to "belt attachment," which is a core component of the present invention. It could anticipate the receiver being configured to attach to a belt (claims 1 and 16).

21. US6041444A

Full Citation: US6041444A, Mckinney; John, "Component load supporting articulated waist belt"
Publication Date: 2000-03-28
Brief Description: This patent describes a component load supporting articulated waist belt.
Potential Anticipation (35 U.S.C. § 102): While focusing on the belt itself, the concept of "component load supporting" could implicitly involve mechanisms for attaching those components, possibly relevant to the receiver's function in claims 1 and 16.

22. US6098858A

Full Citation: US6098858A, Laugesen; Lise-Lotte, "Holder for receiving an object provided with a button"
Publication Date: 2000-08-08
Brief Description: This patent describes a holder for receiving an object provided with a button.
Potential Anticipation (35 U.S.C. § 102): This patent is highly relevant because it mentions a "holder for receiving an object provided with a button," which directly relates to the actuator and button mechanism for releasing the tool attachment device in claims 1 and 16.

23. US6161741A

Full Citation: US6161741A, Michaels Of Oregon Co., "Holster securement system"
Publication Date: 2000-12-19
Brief Description: This patent describes a holster securement system.
Potential Anticipation (35 U.S.C. § 102): A holster securement system is likely to involve a locking mechanism and a means for releasing it, potentially anticipating aspects of the locking mechanism and actuator in claims 1 and 16.

24. US6193546B1

Full Citation: US6193546B1, Ericsson Inc., "Support assembly for personal electronic device and method for using the same"
Publication Date: 2001-02-27
Brief Description: This patent describes a support assembly for a personal electronic device.
Potential Anticipation (35 U.S.C. § 102): Similar to other mobile device holders, this could broadly anticipate the attachment of an item to a user and its release, as in claims 1 and 16.

25. US6279362B1

Full Citation: US6279362B1, Geon Woo Lee, "Belt clip assembly"
Publication Date: 2001-08-28
Brief Description: This patent describes a belt clip assembly.
Potential Anticipation (35 U.S.C. § 102): A "belt clip assembly" directly relates to the receiver attaching to a belt and the tool attachment device being coupled to it (claims 1 and 16).

26. US20030047575A1

Full Citation: US20030047575A1, Enkerlin E. Michael, "Belt clip apparatus for portable electronic device"
Publication Date: 2003-03-13
Brief Description: This patent describes a belt clip apparatus for a portable electronic device.
Potential Anticipation (35 U.S.C. § 102): This also addresses belt attachment for a portable device, potentially anticipating features related to the receiver and tool attachment device in claims 1 and 16.

27. US6626336B1

Full Citation: US6626336B1, Marcus Krusell, "Adapter system"
Publication Date: 2003-09-30
Brief Description: This patent describes an adapter system.
Potential Anticipation (35 U.S.C. § 102): An "adapter system" could be a very broad category, but if it describes an adapter for attaching an item to another, it might generally anticipate the concept of removably coupling a tool attachment device to a receiver as in claims 1 and 16.

28. US6669155B2

Full Citation: US6669155B2, Advancetec Industries, Inc., "Mounting device"
Publication Date: 2003-12-30
Brief Description: This patent describes a mounting device.
Potential Anticipation (35 U.S.C. § 102): A "mounting device" is a general term that could encompass elements of both the receiver and the tool attachment device in claims 1 and 16.

29. US6719178B1

Full Citation: US6719178B1, Robert Lee Taylor, "Chest-mounted paint carrier"
Publication Date: 2004-04-13
Brief Description: This patent describes a chest-mounted paint carrier.
Potential Anticipation (35 U.S.C. § 102): While chest-mounted, the "carrier" aspect relates to holding an item, and the attachment mechanism, if applicable, could broadly anticipate the "pouch coupled to the body" in claims 1 and 16.

30. US6880794B1

Full Citation: US6880794B1, Peter P. Kahn, "Universal tool holder"
Publication Date: 2005-04-19
Brief Description: This patent describes a universal tool holder.
Potential Anticipation (35 U.S.C. § 102): A "universal tool holder" is highly relevant to the basic function of the present invention, "configured to support a pouch or tool holder" in claims 1 and 16. The specific mechanism would need to be compared.

31. US6955279B1

Full Citation: US6955279B1, Garmin Ltd., "Carrying assembly and method for securement of electronic devices"
Publication Date: 2005-10-18
Brief Description: This patent describes a carrying assembly for securement of electronic devices.
Potential Anticipation (35 U.S.C. § 102): This patent involves a carrying assembly and securement, potentially anticipating the overall system, receiver, and locking mechanism of claims 1 and 16.

32. US20050258204A1

Full Citation: US20050258204A1, Evans Michael S, "Container with clip for storing and carrying trimmer line strips"
Publication Date: 2005-11-24
Brief Description: This patent describes a container with a clip for storing and carrying trimmer line strips.
Potential Anticipation (35 U.S.C. § 102): A "container with clip" broadly suggests a pouch attached by a clip mechanism, which could be relevant to the "pouch coupled to the body" and the removable coupling of claims 1 and 16.

33. US20060104735A1

Full Citation: US20060104735A1, Zeiler Jeffrey M, "Tool and accessory connecting system"
Publication Date: 2006-05-18
Brief Description: This patent describes a tool and accessory connecting system.
Potential Anticipation (35 U.S.C. § 102): This patent is directly relevant as a "tool and accessory connecting system," which encompasses the core idea of the present invention. It could potentially anticipate most features of claims 1 and 16, depending on the specific mechanisms disclosed.

34. US20060246963A1

Full Citation: US20060246963A1, A.G. Findings & Mfg. Co., Inc., "Clip assembly with lateral lock and interchangeable clip arm interface and method"
Publication Date: 2006-11-02
Brief Description: This patent describes a clip assembly with a lateral lock and interchangeable clip arm interface.
Potential Anticipation (35 U.S.C. § 102): This patent explicitly mentions a "lateral lock," which is directly related to the locking mechanism preventing lateral movement (as implied by the locking pin in US11857064). This could strongly anticipate aspects of the locking mechanism in claims 1 and 16, as well as the channel engagement.

35. US20070099469A1

Full Citation: US20070099469A1, Nite Ize, Inc., "General purpose magnetic connector"
Publication Date: 2007-05-03
Brief Description: This patent describes a general purpose magnetic connector.
Potential Anticipation (35 U.S.C. § 102): While using a different mechanism (magnetic), the concept of a "general purpose connector" for attaching items could broadly anticipate the removably coupled aspects of claims 1 and 16.

36. US20080083803A1

Full Citation: US20080083803A1, Brantner Connie S, "Belt supported glove and tool holder"
Publication Date: 2008-04-10
Brief Description: This patent describes a belt-supported glove and tool holder.
Potential Anticipation (35 U.S.C. § 102): This patent is directly related to a "belt supported... tool holder," making it highly relevant to the receiver and tool attachment device in claims 1 and 16, and the pouch being configured to support a tool.

37. US20090095785A1

Full Citation: US20090095785A1, Aaw Products, Inc., "Magnetic tool belt and tool belt accessories"
Publication Date: 2009-04-16
Brief Description: This patent describes a magnetic tool belt and tool belt accessories.
Potential Anticipation (35 U.S.C. § 102): Although magnetic, the core concept of a "tool belt" and "accessories" implies a system for attaching tools to a belt, which is the essence of claims 1 and 16.

38. US20100071168A1

Full Citation: US20100071168A1, Miller David A, "Earpiece retainer"
Publication Date: 2010-03-25
Brief Description: This patent describes an earpiece retainer.
Potential Anticipation (35 U.S.C. § 102): While for an earpiece, if the retainer involves a removable attachment to a person or belt, it could broadly anticipate some aspects of claims 1 and 16.

39. US7686196B2

Full Citation: US7686196B2, Michael Panosian, "Retainer for detachably attaching an accessory to a utility belt"
Publication Date: 2010-03-30
Brief Description: This patent describes a retainer for detachably attaching an accessory to a utility belt.
Potential Anticipation (35 U.S.C. § 102): This patent is highly relevant as it describes a "retainer for detachably attaching an accessory to a utility belt." This directly anticipates the fundamental concept of claims 1 and 16, covering the receiver, tool attachment device, and their removable coupling.

40. US7690541B2

Full Citation: US7690541B2, Radar Leather Division S.R.L., "Adjustable holster securement device"
Publication Date: 2010-04-06
Brief Description: This patent describes an adjustable holster securement device.
Potential Anticipation (35 U.S.C. § 102): This patent focuses on securement, which is central to the locking mechanism of claims 1 and 16. The "adjustable" aspect could also be relevant if the current patent has any implied adjustability in its coupling.

41. US7699197B2

Full Citation: US7699197B2, Michael Panosian, "Utility belt system"
Publication Date: 2010-04-20
Brief Description: This patent describes a utility belt system.
Potential Anticipation (35 U.S.C. § 102): This patent, similar to US7686196B2, is highly relevant as a "utility belt system," which would inherently involve mechanisms for attaching and detaching tools or accessories, directly relating to claims 1 and 16.

42. US20110019081A1

Full Citation: US20110019081A1, Shai Eynav, "Device for coupling a camera and lens assembly to a belt"
Publication Date: 2011-01-27
Brief Description: This patent describes a device for coupling a camera and lens assembly to a belt.
Potential Anticipation (35 U.S.C. § 102): This patent relates to coupling an item to a belt, similar to a tool attachment system. It could anticipate the receiver being attached to a belt and the tool attachment device (here, a camera assembly) being coupled to it (claims 1 and 16).

43. DE102010046583A1

Full Citation: DE102010046583A1, Peter Spielberger, "belt adapter"
Publication Date: 2011-05-05
Brief Description: This patent describes a belt adapter.
Potential Anticipation (35 U.S.C. § 102): A "belt adapter" is highly relevant to the receiver component of claims 1 and 16, which is "configured to attach to a belt of a user."

44. US20110142436A1

Full Citation: US20110142436A1, Shai Eynav, "Equipment Holster"
Publication Date: 2011-06-16
Brief Description: This patent describes an equipment holster.
Potential Anticipation (35 U.S.C. § 102): This patent for an "equipment holster" is very relevant to the concept of holding a tool or item on a belt, relating to the pouch and the overall attachment system in claims 1 and 16.

45. US8020821B2

Full Citation: US8020821B2, Wistron Corporation, "Wall hanger and assembly of the wall hanger and a computer device"
Publication Date: 2011-09-20
Brief Description: This patent describes a wall hanger and assembly of the wall hanger and a computer device.
Potential Anticipation (35 U.S.C. § 102): While a "wall hanger," the general concept of attaching a device to a fixed point and its assembly could broadly anticipate the mechanical coupling principles, though less directly than belt-focused prior art.

46. US8166694B2

Full Citation: US8166694B2, S&S Precision, Llc, "Firearm securing device and method"
Publication Date: 2012-05-01
Brief Description: This patent describes a firearm securing device and method.
Potential Anticipation (35 U.S.C. § 102): A "firearm securing device" would necessarily have robust locking and release mechanisms, potentially anticipating the locking mechanism and actuator in claims 1 and 16.

47. US20130008933A1

Full Citation: US20130008933A1, Clifford Eric B, "Tool belt with integrated tool retraction mechanism"
Publication Date: 2013-01-10
Brief Description: This patent describes a tool belt with an integrated tool retraction mechanism.
Potential Anticipation (35 U.S.C. § 102): While it includes retraction, a "tool belt" with mechanisms for tools is highly relevant to the overall system and the receiver's function in claims 1 and 16.

48. US8499986B2

Full Citation: US8499986B2, Hultafors Group Ab, "Quick-release arrangement"
Publication Date: 2013-08-06
Brief Description: This patent describes a quick-release arrangement.
Potential Anticipation (35 U.S.C. § 102): This patent directly addresses a "quick-release arrangement," making it highly relevant to the actuator and the single-action release described in claims 1 and 16.

49. US8613564B2

Full Citation: US8613564B2, Christopher Busch, "Quick disconnect securement device"
Publication Date: 2013-12-24
Brief Description: This patent describes a quick disconnect securement device.
Potential Anticipation (35 U.S.C. § 102): Similar to US8499986B2, this patent is highly relevant to the quick-release and securement aspects, potentially anticipating the locking mechanism, actuator, and overall release action in claims 1 and 16.

50. CN103703651A

Full Citation: CN103703651A, 株式会社牧田, "Power tool system and adapter therefor"
Publication Date: 2014-04-02
Brief Description: This patent describes a power tool system and an adapter for it.
Potential Anticipation (35 U.S.C. § 102): A "power tool system and adapter" is directly relevant to the core concept of attaching tools. The adapter would serve a similar function to the tool attachment device and receiver in claims 1 and 16.

51. US20140291362A1

Full Citation: US20140291362A1, Scala Victor, "Tool holster for attachment to leg"
Publication Date: 2014-10-02
Brief Description: This patent describes a tool holster for attachment to a leg.
Potential Anticipation (35 U.S.C. § 102): While leg-mounted, a "tool holster" inherently involves a holder for tools and an attachment mechanism, making it relevant to the "pouch coupled to the body" and general attachment concepts in claims 1 and 16.

52. US8919622B1

Full Citation: US8919622B1, Guide's Choice Inc, "Hands free beverage carrier that attaches to a person's clothing or a wearable accessory"
Publication Date: 2014-12-30
Brief Description: This patent describes a hands-free beverage carrier that attaches to a person's clothing or a wearable accessory.
Potential Anticipation (35 U.S.C. § 102): This patent describes an article that attaches to a person's clothing/accessory, which is analogous to the receiver and tool attachment device of claims 1 and 16.

53. US8919623B1

Full Citation: US8919623B1, Guide's Choice Inc., "Hands free beverage carrier that attaches to a person's clothing or a wearable accessory"
Publication Date: 2014-12-30
Brief Description: This patent is a continuation of US8919622B1 and also describes a hands-free beverage carrier that attaches to a person's clothing or a wearable accessory.
Potential Anticipation (35 U.S.C. § 102): Same as US8919622B1, relevant to the general concept of attaching an article to a person's attire (claims 1 and 16).

54. US9101198B2

Full Citation: US9101198B2, STARJET Technologies Co., Ltd, "Quick release assembly for law enforcement equipment"
Publication Date: 2015-08-11
Brief Description: This patent describes a quick release assembly for law enforcement equipment.
Potential Anticipation (35 U.S.C. § 102): A "quick release assembly" for equipment is highly relevant to the locking mechanism, actuator, and the disengagement process in claims 1 and 16.

55. USD741161S1

Full Citation: USD741161S1, Draeger Medical Systems, Inc., "Clip for a patient monitoring pod"
Publication Date: 2015-10-20
Brief Description: This is a design patent for a clip for a patient monitoring pod.
Potential Anticipation (35 U.S.C. § 102): As a design patent, it primarily covers the aesthetic appearance. It might broadly anticipate the physical form of a "clip" for attachment, but is less likely to anticipate the functional aspects of the utility claims (1 and 16) unless the design inherently dictates a specific functional mechanism.

56. US20170122701A1

Full Citation: US20170122701A1, Motorola Solutions, Inc., "Systems and methods for coupling a holster to another component"
Publication Date: 2017-05-04
Brief Description: This patent describes systems and methods for coupling a holster to another component.
Potential Anticipation (35 U.S.C. § 102): This patent is directly relevant to "coupling a holster to another component," which is analogous to attaching a tool attachment device (with a pouch/holder) to a receiver. It could anticipate the general coupling and potentially locking mechanisms of claims 1 and 16.

57. US9657893B2

Full Citation: US9657893B2, Draeger Medical Systems, Inc., "Clip for a patient monitoring pod"
Publication Date: 2017-05-23
Brief Description: This is a utility patent for a clip for a patient monitoring pod.
Potential Anticipation (35 U.S.C. § 102): As a utility patent for a "clip for a patient monitoring pod," this is directly relevant to a detachable attachment mechanism. It could potentially anticipate the "receiver configured to attach to a belt" (if the clip attaches to a belt) and the removable coupling with a locking mechanism as described in claims 1 and 16.

58. US9664480B2

Full Citation: US9664480B2, Sagi Faifer, "Holster body and retention system"
Publication Date: 2017-05-30
Brief Description: This patent describes a holster body and retention system.
Potential Anticipation (35 U.S.C. § 102): A "holster body and retention system" is highly relevant to the tool attachment device (pouch/holder) and the locking mechanism of claims 1 and 16.

59. US20170209318A1

Full Citation: US20170209318A1, Ferno-Washington, Inc., "Equipment mounting system"
Publication Date: 2017-07-27
Brief Description: This patent describes an equipment mounting system.
Potential Anticipation (35 U.S.C. § 102): An "equipment mounting system" is a broad category that directly relates to the present invention's function. It could potentially anticipate most features of claims 1 and 16, depending on the specific mounting and release mechanisms.

60. US20170235211A1

Full Citation: US20170235211A1, Shai Eynav, "Equipment holster"
Publication Date: 2017-08-17
Brief Description: This patent describes an equipment holster.
Potential Anticipation (35 U.S.C. § 102): Similar to US20110142436A1, this patent for an "equipment holster" is very relevant to the concept of holding a tool or item on a belt, relating to the pouch and the overall attachment system in claims 1 and 16.

61. US20180188001A1

Full Citation: US20180188001A1, S&S Precision, Llc, "Weapon and accessory link"
Publication Date: 2018-07-05
Brief Description: This patent describes a weapon and accessory link.
Potential Anticipation (35 U.S.C. § 102): A "weapon and accessory link" would certainly involve secure and releasable attachment mechanisms, potentially anticipating the locking mechanism, actuator, and coupling in claims 1 and 16.

62. US20180331708A1

Full Citation: US20180331708A1, Andrew Craig, "Electronic device holster"
Publication Date: 2018-11-15
Brief Description: This patent describes an electronic device holster.
Potential Anticipation (35 U.S.C. § 102): This patent describes a holster for an electronic device, which would involve a mechanism for attaching and detaching the device, similar to the general principles of claims 1 and 16.

63. US20190014893A1

Full Citation: US20190014893A1, Jason Record, "Multi-directional self-directing holster and clip device"
Publication Date: 2019-01-17
Brief Description: This patent describes a multi-directional self-directing holster and clip device.
Potential Anticipation (35 U.S.C. § 102): The "multi-directional self-directing" aspect suggests rotational or pivotal movement, making it highly relevant to claims 2 and 17. The "holster and clip device" relates to the overall attachment system of claims 1 and 16.

64. US10271634B1

Full Citation: US10271634B1, Spider Gear, Llc, "Retention device, a retention device system and method of using a retention device system"
Publication Date: 2019-04-30
Brief Description: This patent describes a retention device and system.
Potential Anticipation (35 U.S.C. § 102): A "retention device, a retention device system" is directly relevant to the locking and securement aspects of the present invention, potentially anticipating the locking mechanism in claims 1 and 16.

65. US20200253365A1

Full Citation: US20200253365A1, Milwaukee Electric Tool Corporation, "Tool Attachment System"
Publication Date: 2020-08-13
Brief Description: This patent describes a tool attachment system.
Potential Anticipation (35 U.S.C. § 102): This is a published application by the same assignee for a "Tool Attachment System" with a priority date of 2019-02-12, which matches the priority date of US11857064. This is highly likely to be a related application or an earlier publication of similar subject matter. It would be considered highly relevant prior art and could potentially anticipate most, if not all, claims of US11857064, depending on the differences in the claims of this application versus the granted patent. This publication date (2020-08-13) is after the priority date (2019-02-12) of US11857064 but before its filing date (2023-07-21). However, the priority date takes precedence for prior art analysis under 35 U.S.C. § 102.

66. US11047644B2

Full Citation: US11047644B2, Tedder Industries, LLC, "Duty mount"
Publication Date: 2021-06-29
Brief Description: This patent describes a duty mount.
Potential Anticipation (35 U.S.C. § 102): A "duty mount" suggests a robust attachment system for equipment, potentially anticipating the receiver and tool attachment device and their secure coupling in claims 1 and 16.

67. US20210346739A1

Full Citation: US20210346739A1, 3M Innovative Properties Company, "Fall-protection assembly comprising a soft, endless connector"
Publication Date: 2021-11-11
Brief Description: This patent describes a fall-protection assembly comprising a soft, endless connector.
Potential Anticipation (35 U.S.C. § 102): While for fall protection and involving a "soft, endless connector," the broader concept of a "system for removably attaching items" or "coupling" could have some very general relevance to claims 1 and 16, but is less direct than other citations.

68. US20230271039A1

Full Citation: US20230271039A1, 3M Innovative Properties Company, "Fall-protection apparatus with braking device comprising flexure-borne pawl"
Publication Date: 2023-08-31
Brief Description: This patent describes a fall-protection apparatus with a braking device.
Potential Anticipation (35 U.S.C. § 102): Similar to US20210346739A1, this patent focuses on fall protection. The concept of a "braking device" or "pawl" could broadly relate to a locking mechanism (claims 1 and 16), but the specific application and components are quite different.

Most Relevant Prior Art

Based on the descriptions, the most relevant prior art appears to be those patents that explicitly mention or clearly imply the following key features of US11857064:

Removable attachment/coupling to a belt: US7686196B2, US7699197B2, US20110019081A1, DE102010046583A1, US20110142436A1, US20080083803A1, US5983686A, US6279362B1, US20030047575A1, US5014892A, US5597102A, US5779115A, US5850996A.
Locking mechanism and actuator for release: US5054170A, US5201858A, US6098858A, US6161741A, US20060246963A1, US8499986B2, US8613564B2, US9101198B2, US9664480B2, US10271634B1.
Pivoting/swiveling action: US2990987A, DE3027550A1, US4718586A, US4721276A, US5622296A, US20190014893A1.
Tool/pouch support: US5163591A, US6880794B1, US20050258204A1, US20060104735A1, US20080083803A1, US20110142436A1, US20140291362A1, US20170235211A1.

Among these, US20200253365A1 (Milwaukee Electric Tool Corporation, "Tool Attachment System") stands out as potentially the most relevant given it's by the same assignee and shares the same priority date, indicating a very close relationship in the development history. Other highly relevant citations include:

US7686196B2 ("Retainer for detachably attaching an accessory to a utility belt")
US7699197B2 ("Utility belt system")
US5054170A ("Connector engageable in multiple positions and releasable in only one position") and US5201858A ("Quick-release connector") for the release mechanism.
US2990987A ("Swivel holster") and DE3027550A1 ("Quick-draw gun holster has pivoting attachment") for the pivoting aspect.
US20060246963A1 ("Clip assembly with lateral lock") for the locking mechanism.