Pipe joints or couplings – With strain relief
Patent
1976-03-23
1977-06-07
Callaghan, Thomas F.
Pipe joints or couplings
With strain relief
285226, 285230, F16L 2702
Patent
active
040279022
ABSTRACT:
Joint to be used between culvert sections and the like comprising short tubular flexible members made of elastic material to be attached to the ends of adjoining culvert sections and a plurality of strengthening members extending between the ends of these sections. The strengthening members are provided inside and outside of said flexible members and are adjustable to accommodate variations in the gap between the adjoining sections.
REFERENCES:
patent: 2616255 (1952-11-01), Altorfer
patent: 3527481 (1970-09-01), Lewis
patent: 3606392 (1971-09-01), Garrett
patent: 3725565 (1973-04-01), Schmidt
patent: 3729939 (1973-05-01), Shimizu
Callaghan Thomas F.
Seibu Polymer Kasei Kabushiki Kaisha
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