US 7,591,291 C1 (11,203rd)
Refueling assembly having a check valve receptacle and a replaceable fuel receiver for bottom-filled fuel tanks
Dean E. Mackey, Springville, UT (US); and Kenneth V. Jensen, Springville, UT (US)
Filed by Dean E. Mackey, Springville, UT (US); and Kenneth V. Jensen, Springville, UT (US)
Reexamination Request No. 90/013,818, Sep. 28, 2016.
Reexamination Certificate for Patent 7,591,291, issued Sep. 22, 2009, Appl. No. 10/571,445, Mar. 13, 2006.
PCT Filed Mar. 17, 2005, PCT No. PCT/US2005/009099
§ 371(c)(1), (2), (4) Date Mar. 13, 2006,
PCT Pub. No. WO2005/089482, PCT Pub. Date Sep. 29, 2005.
Claims priority of provisional application 60/554,434, filed on Mar. 18, 2004.
Ex Parte Reexamination Certificate issued on Oct. 30, 2017.
Int. Cl. B60K 15/04 (2006.01); F16K 27/02 (2006.01); F16K 15/02 (2006.01)
CPC B60K 15/04 (2013.01) [F16K 15/026 (2013.01); F16K 27/0209 (2013.01); B60Y 2200/14 (2013.01); Y10T 137/7842 (2015.04); Y10T 137/7846 (2015.04); Y10T 137/88046 (2015.04); Y10T 137/88054 (2015.04)]
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
Claims 7 and 16 are cancelled.
Claims 1 and 11 are determined to be patentable as amended.
Claims 2-6, 8, 10, 12-15 and 17, dependent on an amended claim, are determined to be patentable.
Claims 9, 18 and 19 were not reexamined.
1. A liquid fuel storage reservoir assembly comprising:
an enclosed tank having a threaded coupling sealably installed at or near the bottom thereof, said coupling having an opening in communication with a fillable interior volume of the tank;
a quantity of fuel at least partially filling said tank;
a fuel receiver and check valve assembly having:
a check valve body having a flow-through chamber, an entrance end, and an exit end threaded to engage the threaded coupling;
a spring-loaded, normally-closed valve that [ is subjected to gravity-generated pressure from said quantity of fuel, that ] blocks said flow-through chamber when closed, thereby being subjected to gravity-generated pressure from said quantity of fuel, and that opens said flow-through chamber during tank filling operations [ when fuel pressure within said flow-through chamber exceeds an opposing pressure applied by both spring loading and the gravity-generated pressure thereon] ;
a fuel receiver body having a generally tubular chamber, said generally tubular chamber having an entrance end that is coupleable to a fuel nozzle, and an exit end that is coupleable to the entrance end of said check valve body; and
a spring-biased valve plug that seals the entrance end of said generally tubular chamber except during tank filling operations [ , and wherein a coil spring which biases the valve plug is at all times positioned entirely within said fuel receiver body, and is compressed between an inner end of said valve plug and a snap ring installed within a snap ring groove located adjacent the exit end of said fuel receiver body] .
11. A liquid fuel storage reservoir assembly comprising:
an enclosed tank having a threaded coupling sealably installed at or near the bottom thereof, said coupling having an opening in communication with a fillable interior volume of the tank;
a quantity of fuel at least partially filling said tank;
a fuel receiver and check valve assembly having:
a check valve body having external threads sized to engage the threaded coupling, said check valve body having a flow-through chamber with entrance and exit ends; and
a spring-loaded, normally-closed valve that [ is subjected to gravity-generated pressure from said quantity of fuel, and that ] blocks said flow-through chamber, except during filling operations, said normally-closed valve being subjected to gravity-generated pressure from said quantity of fuel [ when fuel pressure within said flow-through chamber exceeds an opposing pressure applied by both spring loading and the gravity-generated pressure thereon] ;
a fuel receiver body having a generally tubular chamber open at both entrance and exit ends, the entrance end of said tubular chamber having a conical portion expansive toward the tubular chamber exit end, the exit end of said tubular chamber being sealably coupleable to the entrance end of said check valve body;
a spring loaded [ spring-biased ] valve plug operating to seal said conical portion of said generally tubular chamber when no fuel nozzle is coupled to the fuel receiver [ , and wherein a coil spring which biases the valve plug is at all times positioned entirely within said fuel receiver body, and is compressed between an inner end of said valve plug and a snap ring installed within a snap ring groove located adjacent the exit end of said fuel receiver body] .