Vent pipe coupling

Details Vent pipe coupling Vent pipe coupling

1990-02-16

1990-09-04

Arola, Dave W.

Pipe joints or couplings

Flexible joint, rigid members

Bellows

285236, 285237, F16L 5102

Patent

active

049538977

ABSTRACT:
A one-piece flexible plastic coupling for connecting a first conduit with a pipe of a second conduit has a central portion in the form of a bellows. The coupling has an end in the form of a cylindrical socket for receiving, an end of the pipe of the second conduit. The cylindrical socket has an inner surface with a diameter greater than an outer diameter of the pipe of the second conduit and an outer surface having a diameter defining a socket wall of predetermined thickness. The socket includes at least one protrusion extending inwardly from the inner surface of the cylindrical socket and extending around the entire circumference thereof.

REFERENCES:
patent: 1442625 (1923-01-01), Lyth
patent: 1829236 (1931-10-01), Perkins
patent: 2308073 (1943-01-01), Hagerty
patent: 3043612 (1962-07-01), Paulik et al.
patent: 3269754 (1966-08-01), Bertling et al.
patent: 3388705 (1968-06-01), Grosshandler
patent: 3511061 (1970-05-01), Burckhardt
patent: 3938834 (1976-02-01), Oostenbrink
patent: 3977137 (1976-08-01), Patry
patent: 4229028 (1980-10-01), Gray
patent: 4575128 (1986-03-01), Sundquist
patent: 4650224 (1987-03-01), Smith

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