Valves and valve actuation – Heat or buoyancy motor actuated
Patent
1983-01-17
1985-12-24
Scott, Samuel
Valves and valve actuation
Heat or buoyancy motor actuated
251128, 236 68R, F16K 3100
Patent
active
045601402
ABSTRACT:
A zone valve is described in which the frame for the operator unit is assembled without separate fasteners. Tongue and groove on the frame pieces fit together in an interlocking manner to provide a rigid frame construction. The assembly of the frame, hinges the parts against each other so that they snap together and are rigidly retained together by the inherent spring force of the members.
REFERENCES:
patent: 2582419 (1952-01-01), Dillman
patent: 3245651 (1966-04-01), Erickson
patent: 3273850 (1966-09-01), Kolze
patent: 3290003 (1966-12-01), Kessler
patent: 3326510 (1967-06-01), Kolze
patent: 3395885 (1968-08-01), Kolze et al.
patent: 3567973 (1971-03-01), Mastrodonato, Sr.
patent: 3709431 (1973-01-01), Channell et al.
patent: 3790122 (1974-02-01), Weinstein
patent: 3912219 (1975-10-01), Weinstein
patent: 4043532 (1977-08-01), Draxler
International Telephone and Telegraph Corporation
Lenkszus Donald J.
Odar Helen A.
Scott Samuel
LandOfFree
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