Pressure system for a transmission, especially for an auxiliary gearbox for driving auxiliary devices in aircraft
AssigneeKlockner-Humboldt-Deutz Aktiengesellschaft
InventorsKarl Skrivanek, Klaus Janek
Life of this patent
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Abstract
A pressure system for a transmission, especially for an auxiliary gearbox for driving auxiliary devices in aircraft, according to which atmospheric air is conveyed into the transmission by a pump which draws in the air through an inlet pressure chamber and a check valve until a sufficient pressure has been obtained in the transmission. When the pressure in the transmission surpasses that desired, the excess air is returned to the inlet pressure chamber.
Claims6
In combination with a transmission and a housing containing the latter, especially an auxiliary gearbox for driving auxiliary devices in aircraft, an inlet pressure chamber, check valve means connected to said inlet pressure chamber and operable in open condition to establish communication of the atmosphere with said inlet pressure chamber, compressed air generating means having a suction side adapted to communicate with said inlet pressure chamber and also having a pressure side adapted to communicate with the interior of said housing, separating means operable to separate oil from air associated therewith, conduit means having said separating means interposed therein and leading from said housing to said inlet pressure chamber, a pressure holding valve interposed in said conduit means between said separating means and said inlet pressure chamber, and safety valve means communicating with said housing means and being operable in response to an excessive pressure within said housing means to establish communication between the interior of said housing means and the atmosphere.
Dependencies are inferred from the claim text.