Mechanically expandable annular seal

Details Mechanically expandable annular seal Mechanically expandable annular seal

1981-09-29

1983-07-19

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277101, 277126, F16K 2704, F16J 1516, F16L 3720

Patent

active

043940226

ABSTRACT:
A mechanically expandable annular reusable seal assembly to form an annular hermetic barrier between two stationary, parallel, and planar containment surfaces. A rotatable ring, attached to the first surface, has ring wedges resembling the saw-tooth array of a hole saw. Matching seal wedges are slidably attached to the ring wedges and have their motion restricted to be perpendicular to the second surface. Each seal wedge has a face parallel to the second surface. An annular elastomer seal has a central annular region attached to the seal wedges' parallel faces and has its inner and outer circumferences attached to the first surface. A rotation of the ring extends the elastomer seal's central region perpendicularly towards the second surface to create the fluidtight barrier. A counterrotation removes the barrier.

REFERENCES:
patent: 2243255 (1941-05-01), McDonald
patent: 2848257 (1958-08-01), Moore
patent: 2926012 (1960-02-01), Maher
patent: 3264004 (1966-08-01), Sciaky
patent: 3715134 (1973-02-01), Faccov
patent: 3915462 (1975-10-01), Bruns et al.
patent: 3994472 (1976-11-01), Williams
patent: 4124361 (1978-11-01), Revell
patent: 4138126 (1979-02-01), Javdt

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