Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1980-02-21
1982-10-26
Crosby, Gene
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
72217, 72459, B21D 702
Patent
active
043555284
ABSTRACT:
A bending device for metal pipe with and without plastic jacketing has a short cylindrical segment including a circumferential groove which determines the bending radius of the pipe to be bent and a support for holding the pipe to be bent tangentially with respect to the groove. A lever is mounted for concentric pivotable movement about the segment and a pressing block is mounted on the lever for pivotal movement about an axis parallel to the segment axis. The pressing block has a working surface which has an approximately semicircular, concave cross section in a plane disposed parallel to the pivot axis of the pressing block and the segment axis and a concave cross section in a plane disposed perpendicular to those axes.
REFERENCES:
patent: 2464800 (1949-03-01), Franck
patent: 2654279 (1953-10-01), Tomarin
patent: 2757562 (1956-08-01), Zales
patent: 2820504 (1958-01-01), Henderson
patent: 3380283 (1968-04-01), Wilson
patent: 3410125 (1967-02-01), Schmidt
patent: 4132100 (1979-01-01), Schuler
Crosby Gene
Rothenberger GmbH & Co.
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