Longitudinally divided sleeve of shrinkable material

Details Longitudinally divided sleeve of shrinkable material Longitudinally divided sleeve of shrinkable material

1986-04-24

1987-12-22

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

Particular tool-engaging means or with tool

285381, 285419, 285909, 174DIG8, F16L 4700

Patent

active

047142774

ABSTRACT:
A longitudinally divided sleeve of shrinkable material has a lock closure along longitudinal edges. One of the longitudinal edges includes a closure element having a locking groove formed by two longitudinally extending leg portions, a second longitudinal edge being provided with a locking element having a longitudinally extending hook part having a resilient projection which is received in the locking groove to form the lock closure. The resilient projection prevents the accidental removal of the hook part from the locking groove and preferably the material forming the two elements has a higher cross-linking than the remaining portions of the heat-shrinkable sleeve.

REFERENCES:
patent: 2558367 (1951-06-01), Madsen
patent: 2960561 (1960-11-01), Plummer
patent: 3088495 (1963-05-01), Svec
patent: 3106941 (1963-10-01), Plummer
patent: 3467761 (1969-09-01), Plummer
patent: 3517702 (1970-06-01), Mueller et al.
patent: 3542077 (1970-11-01), Muchmore
patent: 4280258 (1981-07-01), Kunze
patent: 4388488 (1983-06-01), Wlcek et al.
patent: 4399840 (1983-08-01), Lee
patent: 4422478 (1983-12-01), Pentney et al.
patent: 4442153 (1984-04-01), Meltsch

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