Combined vacuum pump and power steering pump assembly

Details Combined vacuum pump and power steering pump assembly Combined vacuum pump and power steering pump assembly

1983-09-12

1985-02-05

Freeh, William L.

Rotary expansible chamber devices

Plural working chambers

Axially spaced rotating members rotate on common axis

417426, 417368, 60486, 418 88, F04C 1100, F04B 2300, F04B 3902

Patent

active

044976186

ABSTRACT:
A combined power steering pump and vacuum pump assembly is disclosed wherein a vented reservoir is connected to receive the discharge of the vacuum pump as well as supply the fluid for circulation by and lubrication of the power steering pump. A sealing arrangement seals the vacuum pump from the power steering pump when the pumps are stopped but provides limited delivery of the fluid from the power steering pump to the vacuum pump when the pumps are running whereby the fluid in the power steering system is prevented from draining into the vacuum pump when stopped and is delivered thereto when running to lubricate same and is then delivered with the discharge air to the reservoir so that there is no loss of the fluid from the power steering system in lubricating the vacuum pump.

REFERENCES:
patent: 1657905 (1928-01-01), Smith
patent: 2409477 (1946-10-01), Lancey
patent: 2427347 (1947-09-01), Bessy
patent: 2575074 (1951-11-01), Senninger
patent: 2655110 (1953-10-01), Sanborn
patent: 2766693 (1956-10-01), Wells
patent: 2892413 (1959-06-01), Erikson
patent: 2921528 (1960-01-01), Muller
patent: 2935023 (1960-05-01), Jackson et al.
patent: 3037455 (1962-06-01), Bozimowski et al.
patent: 3771921 (1973-11-01), Rohde et al.
patent: 3778192 (1973-12-01), Caffrey
patent: 3898810 (1975-08-01), Ohba et al.

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