Seal assemblies for water-well casings

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

1975-09-17

1976-06-15

Rothberg, Samuel B.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

277112, F16L 5510

Patent

active

039630544

ABSTRACT:
A seal for the upper ends of waterwell casings includes a pair of cup-like devices, one inside the other, which extend over the end of the casing, and a central shaft which urges the cup devices apart to expand a rubber seal ring tightly against the outer periphery of the well casing.

REFERENCES:
patent: 1059053 (1913-08-01), Lennon
patent: 1152888 (1915-09-01), Ferguson
patent: 2299434 (1942-10-01), Suirsky
patent: 3901167 (1974-06-01), Reese

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