Vacuum relief valve

Details Vacuum relief valve Vacuum relief valve

1993-07-22

1994-10-18

Rivell, John

Valves and valve actuation

Flexible actuator

15421, F16K 3146, A47L 900

Patent

active

053561155

ABSTRACT:
A valve which is particularly suited for use as a vacuum relief valve in an industrial vacuum cleaning system and which the vacuum operator may quickly and easily open from any position throughout a full 360 degrees about the valve to cut off the suction at the intake end of the vacuum system suction hose in the event the hose becomes blocked or some part of the vacuum operator's body or clothes is accidentally sucked into the intake end.

REFERENCES:
patent: 1594052 (1926-07-01), Draver
patent: 2642089 (1953-06-01), Christie
patent: 3277512 (1966-10-01), Waters
patent: 3360234 (1967-12-01), Thorburn
patent: 3633239 (1972-01-01), Meyerhoefer
patent: 3938217 (1976-02-01), Hommes
patent: 4099551 (1978-07-01), Billington et al.
patent: 4184291 (1980-01-01), Marton

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