Liquid purification or separation – With repair or assembling means – Placement of container opens flow controller
Reexamination Certificate
2008-01-29
2008-01-29
Cronin, Stephen K. (Department: 3747)
Liquid purification or separation
With repair or assembling means
Placement of container opens flow controller
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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Cronin Stephen K.
Leung Ka Chun
Reinhart Boerner VanDeuren P.C.
Techspace Aero S.A.
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