Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1978-06-30
1980-07-15
Hart, Charles N.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
210172, 210232, B01D 2710
Patent
active
042127394
ABSTRACT:
A filter assembly is provided for fitting to an aperture in the wall of an oil tank of a hydraulic system with a disposable filter canister positioned substantially within the tank. The canister comprises a shell having an end wall and a generally cylindrical side wall, an end plate attached to the shell, a tubular filter element fluid-tightly fitted between the end wall and the end plate to define an outer chamber and an inner chamber between which the only flow path is through the filter element. The end plate has a central aperture communicating with the inner chamber and surrounded by a ring of apertures communicating with the outer chamber. A filter head is fluid-tightly fitted to the outer face of the tank wall in register with the aperture. Locating means in or on the canister cooperate with support means in or on the filter head to support the canister in a predetermined axial position relative to the tank wall with its end wall and at least a major portion of its cylindrical side wall within the tank. A chamber within the filter head communicates with the ring of apertures in the end plate, and a port for connection of an oil inlet or return pipe also communicates with the filter head chamber. An opening through which the cartridge may be inserted or withdrawn is closed by means of a removable cap fluid-tightly fitted to the filter head, and the canister has an aperture in the end wall communicating with the inner chamber.
REFERENCES:
patent: 3262564 (1966-07-01), Pall et al.
patent: 3272340 (1966-09-01), Hungerford, Jr.
patent: 3314542 (1967-04-01), Kudlaty
patent: 3355021 (1967-11-01), Jones
patent: 3618776 (1971-11-01), Kudlaty
Hilton Brian T.
Staff Paul
Burks Richard W.
Hart Charles N.
UCC International Limited
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