Vane pump wear sensor for predicted failure mode

Details Vane pump wear sensor for predicted failure mode Vane pump wear sensor for predicted failure mode

2007-04-24

2007-04-24

Koczo, Michael (Department: 3746)

Pumps

Three or more cylinders arranged in parallel, radial, or...

C417S284000

Reexamination Certificate

active

10715245

ABSTRACT:
A vane pump is disclosed for use with gas turbine engines that is adapted and configured to provide a failure mode similar to that of a traditional gear pump. The vane pump includes a pump housing, a cam member, a cylindrical rotor member and a mechanism for communicating a high pressure fluid from the discharge arc region to the inlet arc region when the tip surface of each vane element has experienced a predetermined amounted of wear so as to prevent pump startup. The tip surface of each vane element wears as a result the sliding contact with the circumferential surface of the pumping cavity.

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