Device for shutting off large pipes

Details Device for shutting off large pipes Device for shutting off large pipes

1981-05-22

1983-11-01

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

137601, 74470, 74471R, 251279, F16K 122

Patent

active

044125569

ABSTRACT:
The invention relates to a device for shutting off large pipes in which a two-armed first lever (14) is connected through one arm (14a) to the actuating rod (9) while its other arm (14b) acts on a spring (15), while the two-armed second lever (16) is connected by one arm (16a) to the spring (15) while its other arm (16b) forms the pivot bearing (17) for the first lever (14). This arrangement enables the space occupied by the lever arrangement to be significantly reduced and provides for a simple construction.

REFERENCES:
patent: 2165640 (1939-07-01), Marx
patent: 2339867 (1944-01-01), Monn, Jr.
patent: 3044387 (1962-07-01), Hinden
patent: 3346013 (1967-10-01), Reichow
patent: 3604458 (1971-09-01), Silvey
patent: 4080978 (1978-03-01), McCabe
patent: 4187878 (1980-02-01), Hughey
patent: 4199898 (1980-04-01), Connor
patent: 4241647 (1980-12-01), Herr

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