Seal assemblies for water well casings

Details Seal assemblies for water well casings Seal assemblies for water well casings

1975-07-14

1976-12-21

Smith, Robert I.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

277110, F16L 5510

Patent

active

039982459

ABSTRACT:
An economical easily-installable and easily-removable seal assembly for use on water well casings comprises a dome having a vertically-movable central shaft fastened to a lower flange means so that rotation of a nut to lift the shaft compresses a rubber ring between the flange means and a lower rim of the dome, radially expanding the ring to grip the inside of a well casing with uniform pressure around the periphery of the ring, and also compresses an upper ring between the dome and the shaft.

REFERENCES:
patent: 2855003 (1958-10-01), Thaxton
patent: 3051200 (1962-08-01), Bevington
patent: 3613936 (1971-10-01), Kaiser et al.
patent: 3802466 (1974-04-01), Panella
patent: 3901167 (1975-08-01), Reese
patent: 3917292 (1975-11-01), Martin

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