Punch for hydroforming die

Details Punch for hydroforming die Punch for hydroforming die

2007-04-17

2007-04-17

Jones, David B. (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

With cutting

C072S058000, C083S053000, C083S054000, C083S022000

Reexamination Certificate

active

11536705

ABSTRACT:
A punch for a hydroforming die includes a body, a neck extending axially from the body, a head extending axially from the neck and having a diameter less than a diameter of the body and a thumbnail slot extending axially and radially into the head to allow fluid within a tubular member to force a wall portion of the tubular member outward into the slot of the punch and be sheared by the punch to produce an opening in the tubular member.

REFERENCES:
patent: 5666840 (1997-09-01), Shah et al.
patent: 5765420 (1998-06-01), Schaefer
patent: 5799524 (1998-09-01), Schafer et al.
patent: 5816089 (1998-10-01), Marando
patent: 5974846 (1999-11-01), Ash
patent: 6067830 (2000-05-01), Klages et al.
patent: 6305201 (2001-10-01), Ghiran et al.
patent: 6470546 (2002-10-01), Bonny et al.
patent: 6591648 (2003-07-01), Ash et al.
patent: 6658908 (2003-12-01), Ghiran et al.
patent: 6681611 (2004-01-01), Haag et al.
patent: 7021098 (2006-04-01), Griskiewitz et al.

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