Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1975-11-12
1978-02-28
McGehee, Travis S.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
72110, 214 1P, 427231, B21D 302
Patent
active
040761363
ABSTRACT:
A method and apparatus for temporarily straightening and spinning of pipes wherein at least three sets of rollers are used, each set including four rollers of which two are rotatably mounted in fixed locations and the other two of which are movable by hydraulic driving means, one or more of the fixed location rollers being drivable; collars, each made of three hinged segments, are used around the pipe, which collars are circumferentially stronger than the pipe wall; by pressing the movable rollers against the collars, the collars are held closed and the pipe is held straight while being spun. The invention is particularly although not exclusively applicable for use in a process of lining of pipes.
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Culver Horace M.
English Clays Lovering Pochin & Co. Ltd.
McGehee Travis S.
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