Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction
Patent
1983-03-09
1984-09-11
Weakley, Harold W.
Valves and valve actuation
With means to increase head and seat contact pressure
With positive reduction
251167, 251193, 251204, F16K 2500
Patent
active
044705760
ABSTRACT:
Opening and closing of a fluid flow path is controlled by a valve closure member which consists of both a sealing plate and a counter element and which is moved within its own plane to open and close the valve assembly by a crank rod. Spreading elements are arranged between the sealing plate and the counter element tending to urge these members apart and the crank rod mechanism includes a slide member which is arranged to move within a guide slot in the sealing plate and to also engage a circumferential edge of the counter element so that during closing movement of the sealing plate by engagement of the slide member in the guide slot, the slide member may also extend to engage the circumferential edge of the counter element to rotate the counter element relative to the sealing plate in order to place the spreading elements in position to apply a sealing force between the sealing plate and counter element.
REFERENCES:
patent: 3185435 (1965-05-01), Hauser
patent: 3216694 (1965-11-01), Perazoue
patent: 3237916 (1966-03-01), Bryant
patent: 4291861 (1981-09-01), Faria
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