Metal deforming – By relatively movable offset tool-faces – Embodying three or more coacting relatively movable tools
Reexamination Certificate
1999-07-14
2001-01-16
Jones, David (Department: 3725)
Metal deforming
By relatively movable offset tool-faces
Embodying three or more coacting relatively movable tools
C072S298000, C072S387000
Reexamination Certificate
active
06173599
ABSTRACT:
BACKGROUND OF THE INVENTION
Although not limited to the particular folding or bending processes disclosed in U.S. Pat. No. 5,001,918, the disclosure of which is incorporated herein by reference, the apparatus of the present invention is particularly applicable thereto as the processes disclosed therein related to apparatus for simultaneously tapering opposite ends of a heated leaf spring during which the heated leaf spring is straightened after having been folded or bent into a substantially flat “U” Shaped configuration of which the coinventors of the present invention are amongst the coinventors of U.S. Pat. No. 5,001,918.
The straightening apparatus of the present invention provides however an improvement over the straightening apparatus disclosed in U.S. Pat. No. 5,001,918 in that it is adapted to prevent warpage from occurring at the fold or curved section of the leaf spring during the straightening process.
BRIEF DESCRIPTION OF THE INVENTION
Accordingly, it is an object of this invention to provide apparatus for straightening a heated folded leaf spring.
It is another object of the invention to provide apparatus for straightening a heated leaf spring folded into a substantially flat “U” shaped configuration during a process for simultaneously tapering opposite ends thereof.
It is another object of the invention to provide apparatus operative to prevent warpage from occurring at a central curved section of a heated leaf bent or folded into a substantially flat “U” shaped configuration during a process for simultaneously tapering opposite ends thereof.
REFERENCES:
patent: 1066247 (1913-07-01), Brown, Jr.
patent: 3824834 (1974-07-01), Durham
patent: 4716757 (1988-01-01), McGregor et al.
patent: 4798073 (1989-01-01), Dischler
patent: 5001918 (1991-03-01), Stepanenko et al.
patent: 5588322 (1996-12-01), Passone
patent: 5836193 (1998-11-01), Hunter et al.
patent: 6012320 (2000-01-01), Stepanenko et al.
patent: 63-137518 (1988-09-01), None
Dzieciol Ireneusz Eric
Grechenko Alexandr Pavlovich
Korol Vladimir Andreevich
Murtagh John Joseph
Stepanenko Alexandr Vasylevich
Dykema Gossett PLLC
Jones David
Oxford Suspension, Inc.
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