Rolling diaphragm and rolling diaphragm devices

Details Rolling diaphragm and rolling diaphragm devices Rolling diaphragm and rolling diaphragm devices

1975-03-03

1976-07-20

Schwadron, Martin P.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92 98D, 92105, F01B 1900, F16J 302

Patent

active

039699919

ABSTRACT:
A rolling diaphragm not subject to the formation of cusps. The rolling wall of the diaphragm is made up of two regions, one region intended to engage the lateral wall of the piston of the rolling diaphragm device, and another region intended to extend from the lateral wall of the piston of the rolling diaphragm device to the diaphragm clamping region formed by the cylinder body of the rolling diaphragm device. In the first mentioned region the rate of change of diameter along the rolling wall is relatively small, or minimized. The second region is circularly shaped in cross-section. The radius of curvature of the cross-section of that portion is relatively large, so that the rate of change of diameter of the rolling wall in that portion thereof is relatively large.

REFERENCES:
patent: 349758 (1886-09-01), Solano
patent: 2779353 (1957-01-01), Coffey
patent: 2874569 (1959-02-01), Gray
patent: 3315572 (1967-04-01), Taplin
patent: 3403603 (1968-10-01), Turner
patent: 3405609 (1968-10-01), Lee

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