Piston pump with slot-controlled inlet valve

Details Piston pump with slot-controlled inlet valve Piston pump with slot-controlled inlet valve

2005-06-15

2010-02-16

Kramer, Devon C (Department: 3746)

Pumps

Expansible chamber type

Pumping member position controlled port

C417S070000, C417S501000

Reexamination Certificate

active

07661936

ABSTRACT:
The invention relates to a piston pump for delivering hydraulic fluid, including a cylinder element, a piston that is able to move back and forth in the cylinder element, a piston chamber in which the piston is able to exert pressure on the hydraulic fluid, an outlet valve, and a slot-controlled inlet valve; the inlet valve has at least one slot that is oriented in the movement direction (X-X) of the piston.

REFERENCES:
patent: 3885897 (1975-05-01), Huf
patent: 4372339 (1983-02-01), Anderson
patent: 5356114 (1994-10-01), Havard
patent: 5361731 (1994-11-01), Tanaka
patent: 7222703 (2007-05-01), Laghi et al.
patent: 7-208325 (1995-08-01), None
roundseal.pdf, Dronov 1971, Paragraph 3.

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