Vacuum zone control valve

Details Vacuum zone control valve Vacuum zone control valve

1982-05-07

1984-08-28

Watson, Robert C.

Work holders

With fluid means

Vacuum-type holding means

13762511, B25B 1100

Patent

active

044680171

ABSTRACT:
A manual control valve for installation in a vacuum system including a contiguously-zone vacuum table permits an operator to progressively increase or decrease the number of energized vacuum zones of the table. The valve includes a housing having an outlet securable to a vacuum source and a plurality of inlet passageways connectable with the table so as to communicate with the respective vacuum zones. A plug is rotatably received in the housing, and a network of passageways within the plug and housing interact upon rotation of the plug with respect to the housing to provide communication between the housing outlets and various ones of the housing inlets. The valve also includes indexing means by which the plug is releasably held in place at each of several rotational positions with respect to the housing.

REFERENCES:
patent: 1348123 (1920-07-01), Muth
patent: 2335085 (1943-11-01), Roberts
patent: 2834376 (1958-05-01), Hughes
patent: 3096788 (1963-07-01), Talbot et al.
patent: 3307818 (1967-03-01), Cocito
patent: 3328022 (1967-06-01), Miller
patent: 4065982 (1978-01-01), Wenger
patent: 4131267 (1978-12-01), Ono et al.

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