Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1991-05-24
1992-10-20
Rivell, John
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
137385, 257304, 257309, F16K 3700
Patent
active
051561867
ABSTRACT:
A one-hand operable valve comprises a housing and an actuator which is mounted in the housing. The actuator includes a pair of driving members, and the housing includes a pair of support members. These members provide two pairs of pressure application surfaces oriented to permit the operational state of the valve to be changed using two fingers of one hand. The valve preferably includes a locking mechanism which selectively locks the actuator and housing to prevent relative rotation therebetween. In the preferred embodiment, a system of indicia is employed to designate the operational state of the valve.
REFERENCES:
patent: 2324633 (1943-07-01), McCarthy et al.
patent: 2991804 (1961-07-01), Merkle
patent: 3298661 (1967-01-01), Stam
patent: 3525363 (1970-08-01), Gore et al.
patent: 3678960 (1972-07-01), Leibinsohn
patent: 3780736 (1973-12-01), Chen
patent: 3945603 (1976-03-01), Fraser
patent: 4015816 (1977-04-01), Semon
patent: 4314586 (1982-02-01), Folkman
patent: 4667927 (1987-05-01), Oscarsson
patent: 4807666 (1989-02-01), Morse
Halkey Roberts brochure, date unknown.
Qosina Corp. brochure, date unknown.
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