Multifunctional shutting device for lubrication filter

Liquid purification or separation – With repair or assembling means – Placement of container opens flow controller

Reexamination Certificate

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Details

C210S130000, C123S1960AB

Reexamination Certificate

active

11311857

ABSTRACT:
A multifunctional shutting device for a lubrication filter includes a safety device with triple valve shutting. The safety device includes a first valve for closing the oil intake in the filter with a view to dismantle the filter, a second bypass valve that opens when the filter is blocked and a third valve that opens in the event of excess pressure in the hydraulic circuit. The multiple valve structure is particularly applicable to the lubrication system in an aircraft engine but can be used in other hydraulic circuits subject to similar issues.

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patent: 4075097 (1978-02-01), Paul
patent: 5744030 (1998-04-01), Reid et al.
patent: 6068763 (2000-05-01), Goddard
patent: 6517710 (2003-02-01), Hartmann et al.
patent: 2002/0023614 (2002-02-01), Hartmann et al.
patent: 2003/0127384 (2003-07-01), Kapur
patent: 2004/0238428 (2004-12-01), Fritze
patent: 2006/0118475 (2006-06-01), Girondi
patent: 201 18 682 U 1 (2003-04-01), None
patent: 04 44 7287 (2005-09-01), None

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