Vacuum control valves

Details Vacuum control valves Vacuum control valves

1980-09-02

1981-12-15

Cohan, Alan

Valves and valve actuation

Reciprocating valve

13762521, 137353, H01H 304, F16K 3344

Patent

active

043055699

ABSTRACT:
A vacuum control valve, comprising a wall having a vacuum supply port and a utilization port therein, a valve member movable along such wall, and means guiding the valve member for movement along a predetermined path along such wall, such valve member having a sealing member with sealing enclosure means for selectively producing communication between such ports, each of such ports comprising an opening with a tapered portion extending into such wall at the intersection between such opening and such wall to avoid the formation of any burr at such intersection.

REFERENCES:
patent: 3637962 (1972-01-01), Fiddler
patent: 4057373 (1977-11-01), Schwing

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