Motors: expansible chamber type – Differential – Motive fluid constantly applied to one working member face
Patent
1985-03-11
1988-01-05
Look, Edward K.
Motors: expansible chamber type
Differential
Motive fluid constantly applied to one working member face
60413, 200 82B, F15B 1517
Patent
active
047168129
ABSTRACT:
A hydraulic drive includes a pressure housing having a blind axial recess formed therein with a wall and a bottom, an accumulator piston with first and second opposite ends disposed in the recess, an energy accumulator in the form of springs disposed symmetrical to the central axis of the accumulator piston for continuously engaging the accumulator piston braced against the springs, a working piston in the form of a differential piston guided in the recess having a piston rod passing through the accumulator piston and disposed centrally in the pressure housing, the piston rod, the pressure housing and the accumulator piston defining the wall of the recess, the piston rod, the pressure housing, the first end of the accumulator piston and the working piston defining an accumulator space in the form of a hydraulic accumulator providing pressure energy for the hydraulic drive without requiring an external energy supply, the second end of the accumulator piston and the wall and the bottom of the recess defining a plenum for receiving spent hydraulic fluid at low pressure, and the accumulator piston separating the accumulator space from the plenum.
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Koerner Gerhard
Lutz Edelwald
Orth Egon
Plettner Horst
Weingaertner Rudi
BBC Aktiengesellschaft Brown, Boveri & Cie
Greenberg Laurence A.
Lerner Herbert L.
Look Edward K.
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