Non-sliding vacuum gate valve

Details Non-sliding vacuum gate valve Non-sliding vacuum gate valve

1994-09-15

1997-05-06

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

251158, 251204, 2513353, F16K 318

Patent

active

056263244

ABSTRACT:
A non-sliding vacuum gate valve has a valve housing with a valve opening therethrough which is opened and closed by a gate valve body moved by a valve rod. The valve rod moves with linear and tilting movement so that the valve body tilts against the valve seat surrounding the valve opening. The valve rod is moved linearly by cylinder rods extending from a pair of cylinders attached to the valve housing on either side of the valve rod. A cam body having an angular cam slot is attached to a connecting member which spans between the end portions of the cylinder rods above the valve rod. The valve rod has a cam follower engaging the angular cam slot to provide the tilting movement of the valve rod and valve body responsive to the alternate reciprocal vertical movement of the cylinder rods, to open and close the valve opening.

REFERENCES:
patent: 4718637 (1988-01-01), Contin
patent: 4721282 (1988-01-01), Shawver
patent: 5002255 (1991-03-01), Sawa et al.
patent: 5116023 (1992-05-01), Contin
patent: 5120019 (1992-06-01), Davis
patent: 5415376 (1995-05-01), Ito

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