Pump having unidirectional tapered land thrust bearing cluster

Details Pump having unidirectional tapered land thrust bearing cluster Pump having unidirectional tapered land thrust bearing cluster

1997-03-03

1998-11-03

Nguyen, Hoang

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Parallel cylinders

92 71, 417269, 384121, F01B 300, F16C 3206

Patent

active

058293388

ABSTRACT:
This invention pertains to a single-piece unidirectional tapered land thrust bearing cluster for use in high-pressure positive-displacement swashplate piston pumps and the like. The bearing cluster has a plurality of identical bearing pads integral to the bearing cluster. Each bearing pad includes a tapered section, a flat section and a fluid communicating slot integral therewith. During operation of the pump the swashplate camming surface rotates relative to the bearing cluster which develops a pressurized load-carrying hydrodynamic film of decreasing thickness and increasing strength between a back plate of the rotating swashplate and the bearing cluster.

REFERENCES:
patent: 3565498 (1971-02-01), Leopard et al.
patent: 4225196 (1980-09-01), Gray
patent: 4348065 (1982-09-01), Yoshioka et al.
patent: 4383771 (1983-05-01), Freytag et al.
patent: 4726695 (1988-02-01), Showalter
patent: 4728201 (1988-03-01), Abbe
patent: 4777838 (1988-10-01), Aarestad
patent: 5013219 (1991-05-01), Hicks et al.

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