Multi-faceted valve head for hydraulic pump

Details Multi-faceted valve head for hydraulic pump Multi-faceted valve head for hydraulic pump

1999-03-01

2000-09-12

Freay, Charles G.

Pumps

Expansible chamber type

Having separate noncyclic valve

417305, 417307, F04B 2300, F04B 4900

Patent

active

061168688

ABSTRACT:
A hydraulic oil tank connects to a valve head (10) which is provided with an oil return switch (2) accomodated in an oil return hole (14). An adjusting valve (3) is accomodated in an adjusting hole (13) of the valve head. An oil chamber hole (15) accomodates a check valve (4). A pivot rod hole (11) accomodates a pivot rod (5) and a pump hole (12) accomodates a pump (6). The check valve is in fluid communication with a conduit (8) which, for example, connects to a tube of a hydraulic jack. The valve head allows hydraulic fluid to be imparted to a jack at a controlled, desired pressure and allows advantageous return of fluid to the oil tank.

REFERENCES:
patent: 2531794 (1950-11-01), Walmsley
patent: 2781728 (1957-02-01), Fischer et al.
patent: 3819303 (1974-06-01), Pfleger
patent: 3824043 (1974-07-01), Nordel
patent: 3857404 (1974-12-01), Johnson
patent: 3974742 (1976-08-01), Johnson
patent: 5381932 (1995-01-01), Humphrey et al.
patent: 5404901 (1995-04-01), Pickrell et al.
patent: 5673824 (1997-10-01), Evans

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