Expansible chamber devices – Mutually relatively movable cylinder or sleeve – member... – With additional cylinder relatively slidable exteriorly of...
Patent
1992-05-26
1993-11-23
Look, Edward K.
Expansible chamber devices
Mutually relatively movable cylinder or sleeve, member...
With additional cylinder relatively slidable exteriorly of...
91167R, 91173, 92151, F01B 720
Patent
active
052634027
ABSTRACT:
This invention relates to a displacing apparatus comprising a plurality of concentric tubular members concentrically disposed about a central axial member. These concentric members define a plurality of substantially closed chambers between adjacent concentric members. A piston member is disposed within each chamber and extends generally radially between two adjacent concentric members thereby dividing each chamber into first and second portions. Each of these piston members is rigidly affixed to one, and sealingly engaged with the other, of the two adjacent concentric members forming a chamber. An actuating means actuates each of the concentric members which has a piston member rigidly affixed thereto. The actuating means selectively provides pressure or vacuum to the first and second portions of each of the chambers creating pressure differentials across the piston members. Pressure differentials across the piston members causes relative displacement between the piston members and the adjacent concentric members sealingly engaged therewith.
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Look Edward K.
Lopez F. Daniel
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