Valves and valve actuation – Mechanical movement actuator – Cam
Patent
1979-06-04
1981-07-28
Schwadron, Martin P.
Valves and valve actuation
Mechanical movement actuator
Cam
251297, 251305, 74 57, F16K 3144, F16K 122
Patent
active
042806828
ABSTRACT:
A cam actuated valve is disclosed having a butterfly-type valve member (50) rotatably mounted in a fluid passageway (22) defined by a valve housing (20) with a crank member (16) attached to the valve member and extending beyond the housing. A rectangular bracket (12) is attached to one side of the valve housing and has a pivot hole (60) and a pair of arcuate slots (56, 58) concentric with the pivot hole. A cam (14) is rotatably mounted to the bracket by a pin (84) which projects from the face of the cam and extends into the bracket pivot hole. The cam is axially retained to the bracket by a pair of guide tabs (68, 70) formed around its periphery which extend through the guide slots and abut the valve side of the bracket and a bearing surface on the cam which abuts with the cam side of the bracket. The outer end (74) of the crank member extends through the bracket and into engagement with a cam surface defined by a slot (72) in the cam. The angular position of the crank and the configuration of the slot are such that valve fluid flow rate changes are directly proportional to cam angular displacement.
REFERENCES:
patent: 1947637 (1934-02-01), Bolster
patent: 1996675 (1935-04-01), Hagan
patent: 2080272 (1937-05-01), Hollman
patent: 2737825 (1956-03-01), Plodelman
patent: 2753147 (1956-07-01), Welge
patent: 3737142 (1973-06-01), Boswell et al.
patent: 3921955 (1975-11-01), Haddod, Jr.
patent: 3929314 (1975-12-01), Stratynski
Berlin, Jr. Donald M.
Zukausky Keith E.
Chambers A. Michael
Crist E. C.
Eaton Corporation
Johnston R. A.
McCloskey R. J.
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