Filter head with integral priming pump

Details Filter head with integral priming pump Filter head with integral priming pump

1993-03-08

1994-11-08

Savage, Matthew O.

Liquid purification or separation

Bracket or leg support for static separator assembly

2104164, B01D 3501

Patent

active

053623924

ABSTRACT:
A filter head with an integral priming pump (10) is adapted to engage a replaceable filter or separator element (20). The head has an axial stepped bore (46). The bore has a first area (52) in fluid connection with an inlet (14) which delivers fuel to the head. A second area (54) of the bore of larger diameter is in fluid connection with a pumping chamber (77) of a pump portion (18) of the head. A third area (60) of the bore is in fluid communication with a fluid in-flow area of the element through a spud (24). A first body (86) and a second body (88) are movably positioned in the bore. The first body is sized for blocking a first opening (56) between the first and second areas. The second body is sized for blocking a larger second opening (62) which extends between the second and third areas. Manually depressing and releasing a cover member (76) of the pumping portion of the head causes pressure and vacuum to be alternatively applied in the second area of the bore. As a result, the bodies are alternatively disposed from their adjacent openings and fuel is caused to be drawn from the inlet through the bore and into an in-flow area of the element to accomplish a priming operation. In normal running condition fluid passes through the head and both bodies are disposed away from their respective openings in the bore to minimize flow restriction.

REFERENCES:
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patent: 4956081 (1990-09-01), Hodgkins et al.
patent: 4971528 (1990-11-01), Hodgkins et al.
patent: 5207898 (1993-05-01), Hodgkins

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