Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Patent
1984-01-26
1985-08-20
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
62292, 13761405, 141349, 222509, 251263, 251291, 251339, 251354, F25B 4500
Patent
active
045358028
ABSTRACT:
A manually operable valve apparatus capable of temporary attachment at one end directly to a refrigeration apparatus which is to be charged with a pressurized refrigerant, such as from a portable source of refrigerant, the present valve apparatus can be attached at its opposite end to a hose or the like to communicate with a pressurized source of refrigerant. The valve comprises an internal spring-loaded valving element having pins at each end which each contact a needle element at opposite ends of said valving element. One of the needle elements is directly biased by a cam twisted by finger manipulation against one of the pins of the valving element to displace against spring pressure the other pin, thereby displacing the other needle element to allow pressurized refrigerant to flow from the refrigerant source through the valve apparatus. Flow of refrigerant is stopped by turning of the cam to a position whereby the first needle element does not bias against the first pin, thereby allowing the valving element to return to a non-flow position under influence of the spring. Flow of pressurized refrigerant from a source to a refrigeration apparatus during charging of the apparatus is thus controlled by finger manipulation between open and closed positions of the present valve apparatus.
REFERENCES:
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patent: 2408006 (1946-09-01), Smith
patent: 3645496 (1972-02-01), Rawlins
patent: 3680591 (1972-08-01), Vik
patent: 3916641 (1975-11-01), Mullins
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patent: 4009729 (1977-03-01), Vik
patent: 4328948 (1982-05-01), Pearl, II
patent: 4332273 (1982-06-01), Boyce
patent: 4476892 (1984-10-01), Boyce
Hohauser Herman J.
Walton George L.
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