Pipes and tubular conduits – Repairing
Patent
1973-12-05
1976-05-25
Callaghan, Thomas F.
Pipes and tubular conduits
Repairing
138121, 285 14, 285260, 285DIG4, 285DIG22, F16L 3100, F16L 4700
Patent
active
039584259
ABSTRACT:
A corrugated plastic drainage pipe having a coupler integrally formed at one end thereof and wherein the coupler is in the form of an enlarged collar having an inner diameter and length so as to receive the end of a connecting pipe therein and having a plurality of spaced latching members integrally formed with and extending radially inwardly from the inner surface of the collar. The collar has sufficient flexibility and resiliency so that when the end of a corrugated pipe is inserted in the collar the latching member may be outwardly displaced momentarily with respect to one another for facilitating making the interconnection, and thereafter return and engage the ribs of the corrugated pipe and provide a releasable connection therewith.
REFERENCES:
patent: 559642 (1896-05-01), Watson
patent: 955847 (1910-04-01), Carmean
patent: 1055674 (1913-03-01), Smith
patent: 3076669 (1963-02-01), Schlein
patent: 3212799 (1965-10-01), Rice
patent: 3695643 (1972-10-01), Schmunk
patent: 3747352 (1973-07-01), Maroschak
patent: 3785682 (1974-01-01), Schaller et al.
patent: 3794364 (1974-02-01), Williams
patent: 3825288 (1974-07-01), Maroschak
Callaghan Thomas F.
Plastic Tubing, Inc.
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