Vacuum booster enclosure

Details Vacuum booster enclosure Vacuum booster enclosure

1981-10-28

1989-03-14

Garrett, Robert E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

F16J 302, B60T 1356, F01B 1900

Patent

active

048116530

ABSTRACT:
A pair of shells which form a booster are coupled together by an improved structure. One of either the inner periphery of the opening of the first shell or the outer periphery of the second shell is formed with a projection which projects radially toward the other shell and which is received in a recess formed therein. The engagement between the projection and the recess positively prevents a relative rotation between the shells, and thus avoids the sole reliance upon the resilience of a diaphragm held therebetween, as has been required in the prior art construction. A high accuracy in shaping the shells is thereby not required, facilitating the quality control and allowing a reduction in the manufacturing cost.

REFERENCES:
patent: 2969046 (1961-01-01), Kellogg et al.
patent: 3109346 (1963-11-01), Julow
patent: 3146682 (1964-09-01), Price et al.
patent: 4202462 (1980-05-01), Imber
patent: 4296680 (1981-10-01), Ohta et al.
patent: 4333580 (1982-06-01), Sweigart, Jr.

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