Pump devices

Details Pump devices Pump devices

1997-12-15

1999-11-30

Schwartz, Chris

Fluid-pressure and analogous brake systems

With pump

3031161, 3031162, B60T 1316, B60T 840

Patent

active

059929448

ABSTRACT:
A pump device includes main and auxiliary eccentric portions integrated with a motor output shaft on the side of its base end and on the side of its pointed end. The main eccentric portion is larger in diameter than the auxiliary eccentric portion. A needle roller bearing and a ball bearing are fitted to the outer peripheries of the eccentric portions. Main and auxiliary pumps include a pair of plungers which abut on the outer peripheries of the bearings, respectively, and are driven by the main and auxiliary eccentric portions.

REFERENCES:
patent: 4681513 (1987-07-01), Saito et al.
patent: 4808077 (1989-02-01), Kan et al.
patent: 4810168 (1989-03-01), Nogamie et al.
patent: 4887870 (1989-12-01), Siegel
patent: 4898129 (1990-02-01), Junghans et al.
patent: 5032065 (1991-07-01), Yamamuro et al.
patent: 5067881 (1991-11-01), Maehara
patent: 5094597 (1992-03-01), Takai et al.
patent: 5114314 (1992-05-01), Fujimoto
patent: 5167493 (1992-12-01), Kobari
patent: 5529466 (1996-06-01), Tackett

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