Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1989-01-19
1990-08-28
Look, Edward K.
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
92103SD, F16J 300, F01B 1900
Patent
active
049515543
ABSTRACT:
A diaphragm for a diaphragm-type piston characterized by an S-shaped or ogee-like profile approximating a theoretical model that is substantially free of distortion in a selected position of the piston assembly in which a convolution is formed in the annular space between the diaphragm piston and the body in which the piston operates. Being molded without a convolution, the diaphragm lends itself well to maintaining a reinforcing fabric centrally embedded within the diaphragm proper, while at the same time being substantially distortion-free in a selected position of the piston assembly.
REFERENCES:
patent: 2744543 (1956-05-01), Brady, Jr.
patent: 3051530 (1962-08-01), Ayers, Jr.
patent: 3173342 (1965-03-01), Wilson
patent: 3282171 (1966-11-01), Tuckmantel
patent: 3315572 (1967-04-01), Taplin
patent: 3934480 (1976-01-01), Nederlof
patent: 4086036 (1978-04-01), Hagen et al.
patent: 4864918 (1989-09-01), Martin
Hill Theodore B.
Krampitz Mark S.
Mong William K.
Scott Daniel G.
Spalding Willard P.
American Standard Inc.
Falce G. J.
Look Edward K.
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