Tube bending mandrel

Details Tube bending mandrel Tube bending mandrel

1985-09-03

1987-01-13

Larson, Lowell A.

Metal deforming

Tool and/or tool holder

Including flexible or yieldable tool or support

B21D 903

Patent

active

046354646

ABSTRACT:
A flexible tube-bending mandrel has a longitudinally-split shank link that is unthreaded, but recessed to receive a nut that threadedly engages the bolt for holding the link to a mandrel shank. The mandrel center links are longitudinally split for ease of assembly of their ball-and-socket interconnections and have their socket ends externally threaded to receive an internally-threaded ball segment that holds the center link sections in assembled condition and effectively restrains relative longitudinal motion of the two mating link sections.

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patent: 3415107 (1968-12-01), Ruscitti
patent: 3455142 (1969-07-01), Roberts
patent: 3456482 (1969-07-01), Maier et al.
patent: 4123930 (1978-11-01), Hill et al.
patent: 4315423 (1982-02-01), McGuire
patent: 4542637 (1985-09-01), McGuire

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