US 11,905,895 B2
Dual fuel lockout switch for generator engine
Mark J. Sarder, Waukesha, WI (US); Aleko D. Sotiriades, Cedarburg, WI (US); James J. Dehn, Brookfield, WI (US); and Leigh Jenison, Hartland, WI (US)
Assigned to Champion Power Equipment, Inc., Santa Fe Springs, CA (US)
Filed by Champion Power Equipment, Inc., Santa Fe Springs, CA (US)
Filed on Mar. 14, 2023, as Appl. No. 18/183,734.
Application 18/183,734 is a continuation of application No. 17/937,046, filed on Sep. 30, 2022, granted, now 11,840,970.
Application 17/937,046 is a continuation of application No. 16/783,455, filed on Feb. 6, 2020, granted, now 11,492,985, issued on Nov. 8, 2022.
Application 16/783,455 is a continuation of application No. 16/191,503, filed on Nov. 15, 2018, granted, now 11,530,654, issued on Dec. 20, 2022.
Application 16/191,503 is a continuation of application No. 14/738,060, filed on Jun. 12, 2015, granted, now 10,221,780, issued on Mar. 5, 2019.
Prior Publication US 2023/0235707 A1, Jul. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F02D 19/06 (2006.01)
CPC F02D 19/0613 (2013.01) [F02D 19/0605 (2013.01); F02D 19/0647 (2013.01); F02D 19/0673 (2013.01); Y02T 10/30 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A mechanical fuel lockout switch for a dual fuel engine comprising:
a mechanical fuel valve actuatable between a first position and a second position to selectively control fuel flow to the dual fuel engine from a first fuel source through a first fuel line and a second fuel source through a second fuel line, the mechanical fuel valve configured to:
allow communication between the first fuel source and the dual fuel engine and prevent communication between the second fuel source and the dual fuel engine while in the first position, and
prevent communication between the first fuel source and the dual fuel engine while in the second position; and
a fuel lockout apparatus coupled to the mechanical fuel valve and configured to:
prevent the second fuel source from coupling to the second fuel line while the mechanical fuel valve is in the first position, and
permit the second fuel source to couple to the second fuel line while the mechanical fuel valve is in the second position.