Power drive unit

Details Power drive unit Power drive unit

1978-04-26

1980-03-04

Freeh, William L.

Motors: expansible chamber type

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

Cylinders parallel to rotation axis

91380, 417217, 60421, 60226A, F01B 306, F04B 130, F16D 3102

Patent

active

041910940

ABSTRACT:
A power drive unit for operation of structure in opposite directions, such as aircraft structure and, particularly, thrust reverser structure of an aircraft engine operable between stow and deploy positions, including, a bi-directional hydraulic motor having a variably positionable wobbler for controlling displacement of the motor. Control structure includes a valve for causing fluid flow through the motor in either of two directions, a control cylinder and piston connected to the wobbler for setting the motor at either minimum or maximum displacement conditions or at any condition therebetween, a servo valve operable for setting the position of the piston in the control cylinder, and a differential area piston operatively connected to the servo valve for positioning thereof and responsive to the pressure drop across the motor in either direction of operation thereof to set the motor displacement at the least value possible for the load condition on the motor.

REFERENCES:
patent: 2863422 (1958-12-01), Mercier et al.
patent: 3163115 (1964-12-01), Neff et al.
patent: 3181427 (1965-05-01), Magnuson
patent: 3186310 (1965-06-01), Neff et al.
patent: 3669570 (1972-06-01), Himmler
patent: 3877839 (1975-04-01), Fleld
patent: 3999387 (1976-12-01), Knopf

Affiliated with

Also associated with

Rating

Power drive unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power drive unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power drive unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2034907