Pipe joints or couplings – With assembly means or feature – With holding means functioning only during transportation...
Patent
1982-03-25
1984-05-01
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
With holding means functioning only during transportation...
285323, 285423, F16L 5500
Patent
active
044457146
ABSTRACT:
A tubular body includes an enlarged counterbore extending inward from at least one end to receive the pipe end of plastic pipe to be coupled. For coupling the received pipe, a tubular stiffener is seated against an inward radial shoulder of the counterbore and extends in a slip fit inward of the pipe end. A spacer retainer ring of generally U-shaped section surrounds the pipe end at the shoulder location while juxtaposed outward thereof are a complementary chamferred gripper ring and locking ring arranged in a ramping relation to each other. Inward threading of an end nut applies sealing pressure against a contained gasket while forcing the locking ring axially inward until stopped by engagement against the back face of the spacer ring. Concomitantly, the gripper ring is collapsed inward by the ramping force of the locking ring as to effect a controlled grip relation with the pipe periphery thereat.
REFERENCES:
patent: 2457648 (1940-12-01), Donner
patent: 2779610 (1957-01-01), Risley
patent: 3756632 (1973-09-01), Riggs et al.
patent: 4107452 (1978-08-01), Razvi
patent: 4138145 (1979-02-01), Lawrence
patent: 4229025 (1980-01-01), Volgstadt et al.
Arola Dave W.
Dresser Industries Inc.
Rubin Daniel
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