Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1979-10-17
1981-10-27
Hershkovitz, Abraham
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
220295, F01B 1900, F16J 302
Patent
active
042966809
ABSTRACT:
A vacuum power servo booster including a disc-shaped inner shell and a cup-shaped outer shell with a diaphragm secured between the two shells. A radially opening annular groove is formed in peripheral portions of the inner shell by a first annularly bent portion bulging radially inwardly and a second annularly bent portion oriented along the axial direction of the booster. The outer shell includes rectangular recesses into which extend inwardly at the open faces.
REFERENCES:
patent: 2969046 (1961-01-01), Kellogg
patent: 3053235 (1962-09-01), Hager
patent: 3216608 (1965-11-01), McCormick
patent: 3319420 (1967-05-01), Mercier
patent: 3656413 (1972-08-01), Eggstein
patent: 3760693 (1973-09-01), Myers
patent: 3768379 (1973-10-01), Gardner
patent: 4038822 (1977-08-01), Dodge
Kobayashi Michio
Ohta Ryuji
Hershkovitz Abraham
Jidosha Kiki Co. Ltd.
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