E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/04 (2006.01)
Patent
CA 2245614
A well casing seal device is provided in which a single elastomeric sealing gasket extends about the union of a base section and mated cap section, the base having a well casing opening and an electrical conduit supply port. The mated cap section and base are economically manufactured of ABS (acrylonitrile butadiene styrene) having a uniform material thickness throughout, providing greater resistance to impact loading than known heretofore. The ABS seal device base section comprises a plurality of upwardly facing nut recesses such that the seal device can be readily disengaged without requiring the manipulation of inconveniently located base section bolts. Moreover, the base section comprises downwardly facing ventilation ports such that improved ventilation is facilitated.
Campbell Manufacturing Llc
Davis Emery W.
Goudreau Gage Dubuc
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