Prior art

To identify the most relevant prior art for US patent 11905895, I will search the USPTO database for the patent and examine its cited references.

The USPTO provides a Patent Public Search tool for this purpose.

Here are the prior art references cited by US Patent 11905895, along with their details and potential anticipatory claims:

Citations to US Patents (Cited by Examiner):

• US20070137591A1

  • Full Citation: US20070137591A1, "Engine operated generator"
  • Publication Date: June 21, 2007
  • Filing Date: September 29, 2004
  • Brief Description: This patent application describes an engine-operated generator. While the specific details regarding dual-fuel operation are not immediately apparent from the title, it pertains to the general field of engine-operated generators.
  • Potential Anticipated Claim(s): Given the general nature of the title, this reference could potentially anticipate aspects of Claim 14, which broadly describes a "dual fuel generator and fuel delivery system." Further analysis of the detailed description of US20070137591A1 would be needed to determine if its specific fuel control mechanisms or dual-fuel capabilities, if any, anticipate the mechanical lockout switch or off-board regulator elements of Claims 1, 8, or 14.

• US20110168133A1

  • Full Citation: US20110168133A1, "Approach for controlling fuel flow with alternative fuels"
  • Publication Date: July 14, 2011
  • Filing Date: May 28, 2010
  • Brief Description: This patent application explicitly addresses controlling fuel flow with alternative fuels, which is directly relevant to dual fuel engines. This suggests it likely discusses mechanisms for managing the delivery of different fuel types to an engine.
  • Potential Anticipated Claim(s): This reference is highly relevant to Claims 1 and 8, which describe a mechanical fuel lockout switch for selectively controlling fuel flow from a first and second fuel source to a dual fuel engine. Specifically, it could anticipate the concept of preventing simultaneous fuel delivery and ensuring only one fuel source is active at a time. The methods for controlling fuel flow with alternative fuels described in US20110168133A1 would need to be compared against the specific mechanical fuel valve and lockout apparatus of US11905895 to determine the extent of anticipation. It may also be relevant to Claim 14, concerning the overall fuel delivery system for a dual fuel generator.