In-tank return line filter element and hydraulic reservoir...

Details In-tank return line filter element and hydraulic reservoir... In-tank return line filter element and hydraulic reservoir...

2007-08-07

2007-08-07

Savage, Matthew O. (Department: 1724)

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

C210S172600, C210S448000, C210S454000, C210S463000

Reexamination Certificate

active

10889352

ABSTRACT:
A top or bottom mounted, in-line, in-tank return line filter element is mounted in a hydraulic reservoir. The reservoir includes a holding tank, at least one outlet extending from and one return line extending to the reservoir, an in-tank return line within the reservoir and extending to one return line, and an in-tank return line filter element mounted within the in-tank return line. The in-tank return line filter element includes an end cap, a filter media and a by-pass valve coupled thereto. The end cap includes a central fluid opening, a mounting surface for the filter media, and a peripheral attaching mechanism for attaching the filter element to the in-tank return line to form a filter assembly. The mounting surface is positioned between the central opening and the attaching mechanism such that an in-line, in-tank filter element is provided.

REFERENCES:
patent: 2982418 (1961-05-01), Balley
patent: 3002870 (1961-10-01), Belgarde et al.
patent: 3993561 (1976-11-01), Swearingen
patent: 4935128 (1990-06-01), Hoeptner, III
patent: 5679244 (1997-10-01), Tettman et al.
patent: 5906221 (1999-05-01), Mancell
patent: 6116454 (2000-09-01), Henderson et al.
patent: 6475380 (2002-11-01), Fangmann et al.
patent: 6508271 (2003-01-01), Evanovich et al.
patent: 2001/0002007 (2001-05-01), Zupan et al.

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