Reverse-ported pump

Details Reverse-ported pump Reverse-ported pump

2006-04-04

2006-04-04

Freay, Charles G. (Department: 3746)

Pumps

Expansible chamber type

Biasing means effects induction stroke of abutment driven,...

C417S471000, C417S273000, C417S540000, C417S570000

Reexamination Certificate

active

07021911

ABSTRACT:
A pump used in vehicle controlled braking systems provides a reverse direction of flow through a cylinder bore of the pump and utilizes an inlet check valve located outside of the piston at the end of the cylinder bore opposite the piston, in conjunction with an outlet check valve located in an outlet extending through a sidewall of the cylinder bore of the pump. The inlet check valve is assembled and tested as a module prior to being installed in the pump. A fluid reservoir, having a movable wall, is connected to the inlet to facilitate priming the pump module. The piston is driven by a self-supporting drive apparatus with an eccentric element affixed to a stub shaft, or by other forms of a drive apparatus having an eccentric element fixed to a motor drive shaft.

REFERENCES:
patent: 5199860 (1993-04-01), Stegmaier
patent: 5823639 (1998-10-01), Zinnkann et al.
patent: 6199962 (2001-03-01), Dokas et al.
patent: 6220833 (2001-04-01), Lewis
patent: 6238189 (2001-05-01), Guentert
patent: 6450787 (2002-09-01), Risch et al.
patent: 6481452 (2002-11-01), Reuter et al.
patent: 6764286 (2004-07-01), Hunnicutt et al.
patent: 2003/0101970 (2003-06-01), Utsumi
patent: 2004/0166004 (2004-08-01), Schmitt et al.

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