Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Reexamination Certificate
2007-08-28
2007-08-28
Suhol, Dmitry (Department: 3725)
Metal deforming
By use of closed-die and coacting work-forcer
Cup or shell drawing
C072S453130, C072S250000, C100S259000, C267S214000, C267S219000
Reexamination Certificate
active
11414304
ABSTRACT:
An apparatus for locking a sheet of metal to be shaped in a press, comprising at least one fluid-operated actuator for translational motion of a first sheet presser, adapted to support, in an initial operation step a sheet of metal to be shaped, arranged above a first lower die part, coupled to the base of the press. The first presser cooperates with a second presser, coupled to the second die part associated with the upper ram of the press, in locking a perimetric portion of the sheet of metal during shaping. The actuators are part of a circuit for regenerating and supplying the working fluid, provided with devices for the delayed return of the actuators, upon opening the press, for shaped sheet protection.
REFERENCES:
patent: 2918272 (1959-12-01), Williamson
patent: 3653301 (1972-04-01), Clendenin et al.
patent: 4233872 (1980-11-01), Schulze
patent: 4635466 (1987-01-01), Seki et al.
patent: 5076404 (1991-12-01), Gustafsson
patent: 5435530 (1995-07-01), Sand
patent: 5499525 (1996-03-01), Kordak et al.
patent: 5588641 (1996-12-01), Sand
patent: 0 406 792 (1991-01-01), None
patent: 0 424 122 (1991-04-01), None
patent: 1387088 (2004-02-01), None
patent: 2000071024 (2000-03-01), None
Patent Abstracts of Japan vol. 2000 No. 06, Sep. 22, 2000 & JP 2000 071024 A (Nissan Motor Co Ltd), Mar. 7, 2000 *abstract*.
Cappeller Augusto
Fantinato Daniel
Fiorese Massimo
Josif Albert
Modiano & Associati
O'Byrne Daniel J.
Special Springs S.R.L.
Suhol Dmitry
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