HIGH-CYCLE, SHORT RANGE-OF-MOTION LINKAGE APPARATUS FOR GAS TURBINE ENGINE APPLICATIONS
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
Dec 6, 2012
filing date -
Dec 6, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A high-cycle, short range-of-motion linkage apparatus is provided for actuation of a positioning device. The linkage apparatus includes a pivot member having a stem extending therefrom, a positioning member including a receiving portion into which the stem is removably secured, and at least one spherical plain bearing secured to the pivot member. The spherical plain bearing has an inner member having an outer engagement surface and a bore extending at least partway therethrough, an outer member positioned at least partially around the inner member, the outer member having an inner engagement surface contoured to a shape complementary to the outer engagement surface of the inner member, and a liner disposed between the inner engagement surface of the outer member and the outer engagement surface of the inner member, the liner comprising polytetrafluoroethylene and a phenolic resin reinforced with aramid fibers.
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