Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Reexamination Certificate
2001-12-27
2009-10-06
Ross, Dana (Department: 3725)
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
C072S364000
Reexamination Certificate
active
07596981
ABSTRACT:
This method is original in that it implements the following phases: a foundry preform is created that includes one or more pierced or blind recesses or cavities that match the useful or required shapes of the end part to be obtained; the preform is transferred to a tunnel furnace that ensures a uniform temperature of said preform; the foundry preform is positioned in a heading die disposed on a press; one or more multidirectional rods are introduced into the recess(es) or cavity(ies) of the foundry preform, according to a command prior to the forging operation; sizing operation of the preform that receives the rod(s) in the phase during which the rod(s) are temporarily positioned inside the shaped recess(es), the upper forging die is raised to free the forged preform; the rod (s) positioned in the recess (es) are withdrawn; and the forged preform is removed.
REFERENCES:
patent: 362113 (1887-05-01), Rigby
patent: 4569218 (1986-02-01), Baker et al.
patent: 0 338 419 (1989-04-01), None
patent: 0 955 113 (1999-11-01), None
patent: 05146841 (1993-06-01), None
patent: 07195136 (1995-08-01), None
Bonk Teresa
Cardona, Esq. Victor A.
Heslin Rothenberg Farley & & Mesiti P.C.
Ross Dana
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