Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having...
Reexamination Certificate
2006-04-25
2006-04-25
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
C137S466000, C137S519500
Reexamination Certificate
active
07033134
ABSTRACT:
An air turbine starter is provided that includes a check valve assembly for placement between a first environment, at least a portion of which is at a first pressure (P1), and a second environment, at least a portion of which is at a second pressure (P2), wherein the difference between the first and second pressures generate a pressure force (Fp). The check valve assembly comprises a valve element disposed between the valve seat and the valve body, the valve element capable of being acted upon by a gravitational force (Fw), a viscous force of the fluid to be communicated between the gearbox assembly and the starter housing (Fv), a buoyancy force of the valve element (Fb), and the pressure force on the valve element (Fp), the valve element further configured to translate axially to a closed position when P2<P1and Fw<Fv+Fb+Fp.
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Bristol Brent L.
Facinelli William A.
Gaines Louie T.
Mathis David M.
Edgar Richard A.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz
Look Edward K.
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