Receptacles – Closures – Having means for securing or retaining closure in its closed...
Patent
1983-03-21
1984-07-03
Hall, George T.
Receptacles
Closures
Having means for securing or retaining closure in its closed...
138 89, 166 93, B65D 4500
Patent
active
044574487
ABSTRACT:
A cap assembly for sealing engagement with the upper end of a cylindrical steel well casing is provided in two initially separate, upper and lower sections. The lower section has a major opening therethrough for encircling the upper end of the well casing, the diameter of said opening tapering from a dimension at the lower side which is slightly larger than the diameter of the casing, to a slightly smaller diameter at the upper side. The material of the cap and dimensions of the major opening relative to the outside diameter of the well casing are such that the lower section may be manually inserted on the casing, with the latter extending completely through the major opening, whereby the lower section is in tightly sealing engagement with the casing without requiring a gasket. The upper cap section provides a cover for the lower section and includes a recessed portion bounded by a lip of continuous, closed outline extending downwardly from the lower surface of the upper section. After the lower section is engaged with the casing, the upper section is bolted thereto with the upper section lip engaging, and preferably slightly embedded in the upper surface of the lower section to seal the opening therein, and thus the end of the well casing.
REFERENCES:
patent: 2793699 (1957-05-01), Tubbs
patent: 3035732 (1962-05-01), Baker
patent: 4023699 (1977-05-01), Lien
patent: 4253583 (1981-03-01), Lynch
Hall George T.
McGuire Charles S.
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