Dispensing – With discharge assistant – With movable nozzle interconnected therewith
Patent
1996-05-07
1998-08-18
Kaufman, Joseph
Dispensing
With discharge assistant
With movable nozzle interconnected therewith
22215313, 222385, G01F 1106
Patent
active
057948216
ABSTRACT:
A manually operated pump comprises a pump housing and a plunger. The pump housing has a pump chamber and an intake port. The plunger extends into the pump chamber. A piston is on the plunger and is reciprocally and axially slidable within the pump chamber between a bottom stroke position and a top stroke position. The fluid pump further includes a priming valve, a check valve, a sealing plug, and a plug seat. The priming valve permits fluid to flow upward through the pump chamber when the piston stroke moves the piston downward from the top stroke position toward the bottom stroke position, and prevents fluid from flowing upward through the pump chamber when the piston stroke moves the piston upward from the bottom stroke position toward the top stroke position. The check valve has a valve seat and a moveable valve member moveable between a closed position in which the moveable valve member moveable between seated and unseated positions. The plug seat is downstream of the check valve and upstream of the priming valve. The sealing plug is configured to seat against the plug seat and seal closed the intake fluid flow path when the piston is in its bottom stroke position to prevent fluid from flowing upward through the intake fluid flow path. The moveable valve member of the check valve and one of the sealing plug and plug seat are of a single unitary piece.
REFERENCES:
patent: 2772116 (1956-11-01), Dobkin
patent: 3228347 (1966-01-01), Corsette
patent: 3237571 (1966-03-01), Corsette
patent: 3257961 (1966-06-01), Schlenker
patent: 3359917 (1967-12-01), Cooprider
patent: 3362343 (1968-01-01), Duda
patent: 3391647 (1968-07-01), Corsette et al.
patent: 3583605 (1971-06-01), Corsette
patent: 4065038 (1977-12-01), Magers et al.
patent: 4252507 (1981-02-01), Knickerbocker
patent: 4325500 (1982-04-01), Shay
patent: 4325501 (1982-04-01), Shay
patent: 4375266 (1983-03-01), Magers
patent: 4435135 (1984-03-01), Knickerbocker
patent: 4524888 (1985-06-01), Tada
patent: 4692103 (1987-09-01), Anderson
patent: 5267673 (1993-12-01), Crosnier et al.
patent: 5271513 (1993-12-01), Crosnier et al.
patent: 5332325 (1994-07-01), Crosnier et al.
patent: 5339972 (1994-08-01), Crosnier et al.
patent: 5401148 (1995-03-01), Foster et al.
patent: 5465880 (1995-11-01), Glynn
patent: 5518377 (1996-05-01), Bougamont et al.
patent: 5562234 (1996-10-01), Su
Foster Donald D.
Nelson Philip L.
Contico International Inc.
Kaufman Joseph
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