Perfected counterdie for pipe bending machines

Details Perfected counterdie for pipe bending machines Perfected counterdie for pipe bending machines

1995-11-21

1997-12-09

Larson, Lowell A.

Metal deforming

By deflecting successively-presented portions of work during...

By use of work-contacting wiper and moving, work-holding form

72159, B21D 704, B21D 905

Patent

active

056948000

ABSTRACT:
Improved counterdie for pipe bending machines, that has an approximately semicylindrical configuration in the working zone, with its frontal walls in a progressive ramp that becomes more pronounced in the vicinity of the exit zone, and provided with a longitudinal neck that is semicylindrical after the entrance zone, and then later truncated cone-shaped up to the exit zone, and with a longitudinal depression at the bottom with progressive section.

REFERENCES:
patent: 2955638 (1960-10-01), Hellwig
patent: 3921424 (1975-11-01), Pearson
patent: 4085492 (1978-04-01), Stange
patent: 4130004 (1978-12-01), Eaton
patent: 4355528 (1982-10-01), Rothenberger
patent: 4532787 (1985-08-01), Caporusso et al.
patent: 4765168 (1988-08-01), Stange et al.
patent: 5127248 (1992-07-01), Sanseau et al.
patent: 5345802 (1994-09-01), Caporusso et al.
patent: 5469728 (1995-11-01), Caporusso et al.

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