Reusable liquid filter assembly

Details

Inventors: Karcey, Jon;
Assignee: Watson Karcey International (Greenwich, CT)
Primary Examiner: Sever; Frank
Assistant Examiner:
Attorney, Agent or Firm: St. Onge Steward Johnston & Reens

A reusable liquid filter assembly, such as an oil filter, is provided comprising a housing with inlet and outlet ports, filter means removably mounted inside the housing, means for holding the filter means inside the housing having tapered lengthwise slots for increased liquid flow, bypass valve means for providing a passageway between the inlet and outlet ports when the liquid pressure exceeds a predetermined value, means for alternately sealing and opening the housing to remove or insert the filter means, and a plurality of gasket means for permitting the filter assembly to be cooperable with a plurality of engines. An internally threaded nipple is also provided for insertion into the outlet port for changing the size thereof to permit use on a plurality of engines.

DETAILED DESCRIPTION In accordance with the present invention, a reusable liquid filter assembly for an engine is provided for receiving liquid from the engine and discharging filtered liquid to the engine, the filter assembly comprising a housing with inlet and outlet ports, filter means removably mounted inside the housing, means for holding the filter means inside the housing having tapered lengthwise slots for increased liquid flow, bypass valve means for providing a passageway between the inlet and outlet ports when the liquid pressure exceeds a predetermined value, means for alternately sealing and opening the housing to permit insertion or removal of the filter means, and a plurality of gasket means for permitting the filter assembly to be sealingly cooperable with a plurality of engines.
More specifically, the holding means comprises a filter sleeve for mounting inside the housing on a substantially rigid support frame, the frame forming a plurality of tapered lengthwise slots for enhancing the liquid flow through the filter screen.
The support frame and filter sleeve are removable through an opening in the housing.
The housing may also have a centrally located outlet port comprising an internally threaded nipple, and a threaded insert means is provided for insertion into the threaded nipple for changing the size of the outlet port to be cooperable with a plurality of engines.
The support frame may have a chamfer on at least one end to enhance the mounting or demounting of the filter sleeve from the support frame.
The housing may have oval shaped inlet ports for enhancing the rate of liquid flow.
The housing may further comprise a plurality of spaced apart cooling fins positioned lengthwise on the exterior of the housing sidewall.
The bypass valve means may also comprise means for changing the predetermined value of liquid pressure that opens the bypass valve.
It is an object of the present invention to provide a reusable liquid filter assembly for an engine that can be operated at less expense than the typical prior art filter, in that the filter element can be removed, cleaned and reinserted in the filter unit for reuse a virtually unlimited number of times

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