Device for sealing an opening and slide valve comprising such a

Details Device for sealing an opening and slide valve comprising such a Device for sealing an opening and slide valve comprising such a

1985-06-26

1987-11-10

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

138 93, 251327, 251175, 220232, F16K 316

Patent

active

047052597

ABSTRACT:
The invention relates to a device for sealing an opening (7) defined by an edge (6), comprising a sealing element (2, 102), the dimensions of which are at least equal to those of the opening (7), means for securing the said sealing element opposite the opening, and means for ensuring fluid-tightness between the sealing element (2, 102) and the edge (6). The means for ensuring tightness between the sealing element (2, 102) and the edge (6) consists of a flexible membrane (8), means for fixing the circumference of this membrane to the sealing element (2, 102) so as to define a volume (16) between the membrane (8) and the sealing element (2, 102), and a communication hole (18, 32) provided in the sealing element so as to connect the volume (16) to a source of pressurized fluid.

REFERENCES:
patent: 2877791 (1959-03-01), Rich
patent: 3057376 (1962-10-01), Agutter et al.
patent: 4100827 (1978-07-01), Flemming

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