Cold forming tool, machine and method

Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work

Reexamination Certificate

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C072S108000, C072S703000

Reexamination Certificate

active

07040131

ABSTRACT:
Cold forming tool including at least one penetration zone having teeth and a calibration zone having teeth. The teeth having a tooth height that increases substantially from the at least one penetration zone to the calibration zone. A distance between an outer surface and a forming reference axis decreasing from the at least one penetration zone to the calibration zone. A rate of increase in the tooth height between the at least one penetration zone and the calibration zone being greater than a rate of decrease in the distance between the outer surface and the forming reference axis between the at least one penetration zone and the calibration zone. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

REFERENCES:
patent: 2886990 (1959-05-01), Bregi et al.
patent: 2937547 (1960-05-01), Moeltzner
patent: 3201964 (1965-08-01), Walters
patent: 3626733 (1971-12-01), Zook et al.
patent: 3651678 (1972-03-01), Zook et al.
patent: 3979859 (1976-09-01), Miller
patent: 4362045 (1982-12-01), Mickas
patent: 4610154 (1986-09-01), Carene, Jr.
patent: 4862718 (1989-09-01), LaCroix
patent: 5659955 (1997-08-01), Plamper
patent: 6324887 (2001-12-01), Sharp
patent: 6779270 (2004-08-01), Sonti et al.
patent: 376875 (2004-09-01), None
patent: 2424033 (2004-09-01), None
patent: 94/20238 (1994-09-01), None
Enlish Languge Abstract of JP62144835.

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