Dispensing – With discharge assistant – Container with follower
Reexamination Certificate
2006-02-27
2009-11-24
Nicolas, Frederick C. (Department: 3754)
Dispensing
With discharge assistant
Container with follower
C222S386500, C222S394000, C222S326000
Reexamination Certificate
active
07621429
ABSTRACT:
A piston tank with elongated contact between the piston and the tank bore to prevent piston cocking and preserve alignment is equipped with a compound piston that includes a carriage (or glider) and a barrier that is movable relative to the carriage. The carriage is an elongate ring with sealing and contact sites between the ring and the tank bore and axially spaced apart, and the barrier moves or changes shape in response to pressure differentials across the barrier imposed by a pressurized driving fluid. The barrier and carriage can thus move between a position allowing the full volume of the tank to be occupied by fuel or other functional fluid and a position ejecting all of the fuel or functional fluid out of the tank through an outlet port. Two examples of the barrier are disclosed—a plate that is movable within the ring and a diaphragm affixed to the ring and deformable in both directions.
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Spear Guy B.
Wu Peikuan
Aerojet - General Corporation
Heines M. Henry
Nicolas Frederick C.
Townsend and Townsend and Crew LLP.
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