Gripper means for stretcher leveler apparatus

Details Gripper means for stretcher leveler apparatus Gripper means for stretcher leveler apparatus

1989-07-06

1991-01-08

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

269274, 269286, B21D 2504

Patent

active

049825933

ABSTRACT:
A gripper means for use in a stretcher leveler apparatus in which the surface for engagement with the metal to be stretched comprises a smooth polymeric material most desirably of a thermoset polyurethane.

REFERENCES:
patent: 2519107 (1950-08-01), Brown
patent: 2594684 (1952-04-01), Rothe
patent: 2766649 (1956-10-01), Labry
patent: 2980046 (1961-04-01), McGregor
patent: 3047934 (1962-08-01), Magner
patent: 3290199 (1966-12-01), Willhoite
patent: 3322423 (1967-05-01), Popow
patent: 3515139 (1970-06-01), Mallina
patent: 4114245 (1978-09-01), Bainard

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