Pipe joints or couplings – Frangible element – Score line or groove
Patent
1990-08-31
1991-10-01
Arola, Dave W.
Pipe joints or couplings
Frangible element
Score line or groove
285353, 29418, 411 5, F16L 3500
Patent
active
050527193
ABSTRACT:
In order to simply and economically fix to an internal-thread coupling (12) a pipeline (17) furnished with two slidable external-thread connections (15, 18), the invention contemplates fabricating the two external-thread connections (15, 18) together in the shape of one part only. At a predetermined screw-in torque, one external-thread connection (15) is torn off and as a result one pipeline end (16) is safely retained in the internal-thread coupling (12). The second external-thread connection (18) may be slid to the second end (21) of the pipeline and can fix the latter to a further internal-thread connection. The fixing means and methods contemplated by the invention are automation compatible and, upon fixing, protect the pipeline from being detached from the coupling through faulty handling.
REFERENCES:
patent: 3149697 (1964-09-01), Bendeich et al.
patent: 3630214 (1971-12-01), Levering
patent: 3794057 (1974-02-01), Badger
patent: 3916929 (1975-11-01), Brown
patent: 4029379 (1977-06-01), Kotala et al.
patent: 4304422 (1981-12-01), Schwarz
patent: 4453749 (1984-06-01), McKinnon
patent: 4720204 (1988-01-01), Johnson
patent: 4872471 (1989-10-01), Scheider
Alfred Teves GmbH
Arola Dave W.
Chun Heather
Lewis J. Gordon
Seitter Robert P.
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