Four slider apparatus for forming curved rectangular bodied need

Details Four slider apparatus for forming curved rectangular bodied need Four slider apparatus for forming curved rectangular bodied need

1993-10-08

1994-10-04

Crane, Daniel C.

Metal deforming

By three or more coacting relatively movable tools

Concurrently actuated tools

72403, 163 1, 163 5, 140 71R, B21G 100

Patent

active

053515188

ABSTRACT:
An apparatus for forming a curved, flat sided surgical needle, which comprises a frame member including an anvil member having an arcuate surface profile; a movable first die member for simultaneously imparting an arcuate profile and at least a pair of first opposing flat surfaces to a body portion of a needle blank and adapted to receive a needle blank, the first die member having an arcuate needle forming surface which is substantially parallel to the arcuate surface of the anvil member; a first side tool for curving a tapered end portion of the needle blank about the anvil; a transfer tool adapted to slide the needle blank along the anvil a side press adapted to import second flat surfaces to a second pair of opposing sides of the body portion of the needle blank; a second side tool member for curving a drill end portion of the needle blank about the anvil; and an ejection tool for moving the needle blank away from the anvil.

REFERENCES:
patent: 500058 (1893-06-01), Ellis
patent: 1432573 (1922-10-01), Senft
patent: 1744030 (1930-01-01), Chadwick
patent: 3861446 (1975-01-01), Zocher
patent: 3929082 (1975-12-01), Zocher
patent: 4044814 (1977-08-01), Zocher
patent: 4524771 (1985-06-01), McGregor et al.
patent: 5041127 (1991-08-01), Troutman
patent: 5287721 (1994-02-01), Samsel

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