Swash plate type pump with swash plate tilt angle controller

Details Swash plate type pump with swash plate tilt angle controller Swash plate type pump with swash plate tilt angle controller

1992-03-09

1993-05-04

Smith, Leonard E.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

60452, 60443, F04B 128

Patent

active

052077519

ABSTRACT:
Disclosed is a swash plate type variable displacement pump. The pump comprises a spring which biases a swash plate in a direction of decreasing the tilting angle thereof, a hydraulic cylinder which controls the swash plate at the tilt angle according to a load on the pump by the resisting force against the biasing force of the spring, a valve allows a pressurized fluid to flow into the hydraulic cylinder when opened, and prevents the pressurized fluid from coming out of the hydraulic cylinder when closed, and a fluid discharge passage which gradually releases the resisting force of the hydraulic cylinder against the spring to slowly shift the tilt angle of the swash plate to 0.degree..

REFERENCES:
patent: 3054263 (1962-09-01), Buozich et al.
patent: 3523419 (1970-08-01), Hindle
patent: 3942486 (1976-03-01), Kirchner
patent: 4600364 (1986-07-01), Nakatani et al.
patent: 5066201 (1991-11-01), Nagai et al.

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