Unlimited amplitude rolling piston

Details Unlimited amplitude rolling piston Unlimited amplitude rolling piston

1990-12-28

1992-08-18

Denion, Thomas E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92103F, 92103R, F01B 1900

Patent

active

051389363

ABSTRACT:
A rolling piston comprises a substantially cylindrical piston slidably supported within a chamber. One end of the chamber is sealed by a first sealing cap including a circular base portion having a fluid inlet therethrough and opposite ends of a substantially tubular flexible diaphragm are sealingly anchored around a first end of the piston and around an inside periphery of the first sealing cap, respectively. The diaphragm comprises a cylindrical thin-walled outer sleeve having high axial tensile strength and a cylindrical, thin-walled inner sleeve inside the outer sleeve and contiguous therewith having high elasticity both longitudinally and radially.

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patent: 4378935 (1983-04-01), Brown et al.
patent: 4741252 (1988-05-01), Harter et al.

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