Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1976-08-11
1978-04-04
Cohan, Alan
Fluid handling
Systems
Flow path with serial valves and/or closures
13761404, F16K 3728
Patent
active
040821129
ABSTRACT:
A hose coupling wherein the ends of two hoses are connected to tubular valve bodies having axially extending passages with annular valve seats which face the respective hoses and are normally engaged by disk-shaped elastic valve elements under the action of helical valve springs. A tubular member is reciprocably installed in one valve body at the open end of the respective passage and has a centrally located collar which is flanked by elastic sealing rings. When the two bodies are coupled to each other by a bayonet lock, one end of the tubular member lifts the valve element in the other body off the respective seat and the other end of the tubular member then lifts the valve element in the one body off the respective seat under the action of the valve spring in the other body. When the two bodies are disconnected from each other, the valve spring in the one body engages the respective valve element with the adjacent seat and shifts the tubular member with respect to the one body. The ring at one side of the collar seals the passage of the one body from the atmosphere in all positions of the tubular member, and the ring at the other side of the collar seals the passage of the other body from the atmosphere during and subsequent to coupling of the two bodies to each other.
REFERENCES:
patent: 1899119 (1933-02-01), Singer
patent: 2108714 (1938-02-01), Hirsch et al.
patent: 2864628 (1958-12-01), Edleson
patent: 3196897 (1965-07-01), Hodson
patent: 3435848 (1969-04-01), Johnston
AGFA-Gevaert A.G.
Cohan Alan
Kontler Peter K.
Michalsky Gerald A.
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