Wells – Above ground apparatus – Well caps or casing heads
Patent
1980-08-26
1983-10-25
Novosad, Stephen J.
Wells
Above ground apparatus
Well caps or casing heads
220293, E21B 3302, E21B 4100
Patent
active
044113129
ABSTRACT:
A tamper proof water-tight well cap has been developed to seal the outflow pipe of wells or tanks. The well cap includes a first member coaxially fitting over the outflow pipe having a plurality of peripherally arranged threaded bolt collars to receive and hold bolts. An annular collar member having a plurality of hollow bosses to accommodate bolts is arrayed on the outside circumferential surface of the annular collar member and the collar member has a plurality of radially inwardly extending tabs arranged about its inner circumferential surface. An annular compressible sealing member connects the first base member and the annular collar member to prevent any leakage of liquids into the well or tank. A plurality of bolts fitting through the openings in the bosses on the collar member are threaded into the bolt collars on the base member to hold both parts together. A substantially flat cap member having hooks extending axially downwardly and engaging the tabs to secure said cap to the annular collar member is mounted on top of the annular collar member and has an aperture to accept the bayonet lock pin. The bayonet lock pin fits through the aperture and engages a radial inward extending tab on the annular collar member thus preventing the rotation and removal of the cap.
REFERENCES:
patent: 1578194 (1926-03-01), Edelman
patent: 2401923 (1946-06-01), Gleeson
patent: 2566870 (1952-09-01), Beagle
patent: 3070129 (1962-12-01), Poulallion
patent: 3473573 (1969-10-01), Baker
patent: 4023699 (1977-05-01), Lien
patent: 4233697 (1980-11-01), Cornwell
Falk Joseph
Hewing Manufacturing Corporation
Novosad Stephen J.
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