Stationary seal ABS pump

Details Stationary seal ABS pump Stationary seal ABS pump

1994-12-16

1997-02-11

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031163, 277103, B60T 840

Patent

active

056013450

ABSTRACT:
A piston-type pump suitable for use in vehicle control systems contains a piston element sliding within a stepped bore of a pump body, leakage of fluid past the piston element being prevented through use of a stationary seal surrounding the piston element and located at the end of the larger diameter stepped bore and fixed at that position by the end of a plug which is preferably shaped so as to include within the plug the pump cavity. The outer end of the piston element is urged by a return spring contained within the pump cavity against an oscillatory driving unit. Inlet and outlet check valves ensure unidirectional flow of hydraulic fluid.

REFERENCES:
patent: 4354715 (1982-10-01), Farr
patent: 4387934 (1986-06-01), Farr
patent: 4715666 (1987-12-01), Farr
patent: 4875741 (1989-10-01), Ozawa
patent: 4941713 (1990-04-01), Farr
patent: 4962972 (1990-10-01), Pizzo
patent: 5172956 (1992-12-01), Klose
patent: 5213482 (1993-05-01), Reinartz

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