Hydraulic pump with ball bearing pistons

Details Hydraulic pump with ball bearing pistons Hydraulic pump with ball bearing pistons

1995-11-21

1997-02-11

Gluck, Richard E.

Pumps

Three or more cylinders arranged in parallel, radial, or...

Motor driven

417269, 417273, 92178, F04B 2708

Patent

active

056014171

ABSTRACT:
A hydraulic power unit combining a number of cylinders using ball bearings to displace hydraulic fluid sequentially with controlled flow to a number of hydraulic actuators. A power unit could combine a minimum of two cylinders through ten or twelve cylinders in a practical hydraulic power unit. The inherent bi-directional nature of this combination of fluid displacing ball bearings, cylinder and porting arrangement offers a unique opportunity to change fluid flow by reversing input drive. The torsional reaction component of the opposed reciprocator drives is utilized to rotate the core cylinder assembly to realign outlet and return fluid flow. This realignment can be used to reverse the fluid circuits or redirect the fluid to other work.

REFERENCES:
patent: 2251259 (1941-08-01), Carmichael
patent: 3592105 (1971-07-01), Fryklund
patent: 5304043 (1994-04-01), Shilling
patent: 5316446 (1994-05-01), Kimura et al.
patent: 5316447 (1994-05-01), Fuji et al.
patent: 5317873 (1994-06-01), Okuda et al.

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