Pipe joints or couplings – With assembly means or feature – Particular tool-engaging means or with tool
Patent
1981-02-20
1983-07-26
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Particular tool-engaging means or with tool
285231, 285356, 285369, F16L 3500
Patent
active
043950604
ABSTRACT:
A portable, reusable pipe coupling for connecting joints of cylindrical conduit which incorporates an annular body structure having sealed recesses formed at each extremity thereof. The end portions of the body structure define annular enlargements that are internally threaded and receive the externally threaded annular rim portion of a seal retainer element at each extremity of the coupling. The seal retainer element cooperates with a seal support member within the coupling body to define an annular seal chamber and an annular seal locking groove. An annular sealing element formed of resilient material is disposed within the seal chamber and is deformed by movement of the seal retainer relative to the coupling body, thus forcing the inner peripheral portion of the sealing element into sealed engagement with the ends of conduit sections that are located within the coupling body. The sealing element also incorporates an annular locking flange that is secured within the locking groove. The seal retainer is provided with hammer lugs to allow rotatable adjustment by application of hammer blows to the seal retainer. The coupling body includes a carrying handle to facilitate transporting the coupling when not in use.
REFERENCES:
patent: 710631 (1902-10-01), Tietz
patent: 1082324 (1913-12-01), Hart
patent: 1869915 (1932-08-01), Sample
patent: 1925406 (1933-09-01), Shaffer
patent: 1974195 (1934-09-01), Rice
patent: 2272222 (1942-02-01), Mullen
patent: 2568232 (1951-09-01), Hamer
patent: 2703719 (1955-03-01), Crothers
patent: 3430990 (1969-03-01), Nelson
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