Small-diameter metallic conduit

Details Small-diameter metallic conduit Small-diameter metallic conduit

1989-04-20

1990-10-09

Crane, Daniel C.

Metal deforming

By relatively movable offset tool-faces

Embodying three or more coacting relatively movable tools

72306, 72321, 72388, 72217, B21D 7024

Patent

active

049613359

ABSTRACT:
A small-diameter metallic conduit bending machine includes a stationary frame which is shaped so as to substantially conform to a finished metallic conduit. A bending member is provided movably toward the stationary frame from thereoutside to bend a metallic conduit. To prevent the bending member from interfering with the metallic conduit which is moving as the result of the bending process of a preceding stage, an actuator is provided to remove the bending member from the moving area of the metallic conduit. That is, the binding member is made movable toward the stationary frame and retractable from the moving area of the metallic conduit.

REFERENCES:
patent: 183190 (1876-10-01), McWilliams
patent: 411941 (1889-10-01), Taft
patent: 641535 (1900-01-01), McKibben
patent: 2366012 (1944-12-01), Draper et al.
patent: 2964085 (1960-12-01), Ghiringhelli
patent: 3420279 (1969-01-01), Tuit
patent: 4249407 (1981-02-01), Fogleman
patent: 4662204 (1987-05-01), Saegusa
patent: 4735075 (1988-04-01), Saegusa
patent: 4805436 (1989-02-01), Saegusa

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