Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Reexamination Certificate
2007-06-26
2007-06-26
Leo, Leonard R. (Department: 3744)
Metal deforming
By use of closed-die and coacting work-forcer
Cup or shell drawing
C029S890052, C165S153000, C165S175000
Reexamination Certificate
active
10476926
ABSTRACT:
According to a method for producing head elements for heaters, a piece of sheet metal (1) is deep drawn and cut along the edge (9) of an open side (6) to obtain a hollow body (8) with larger and narrower sides (4,5,14,15). An aperture (12) is made on each opposite larger side (4,5) of the hollow body, and threaded rings (26) are then applied around the lateral through apertures (12). Notches (16) are made on the opposite large sides (4,5), along the edge (9) of the open side (6), and then three cores (18) are introduced through the edge (9), so that a flange (17) around the notches (16) can be made by pressing, so as to close the sheet metal (1) around the cores (18) widening the notches (16). After the cores (18) have been removed, the edge (9) is welded along the flange (17) of the widened notches (16), thus obtaining holes (21) separated from each other.
REFERENCES:
patent: 1731575 (1929-10-01), Hyde
patent: 2262627 (1941-11-01), Whitesell, Jr. et al.
patent: 2713195 (1955-07-01), Hemmer
patent: 2930590 (1960-03-01), Sartori et al.
patent: 3516483 (1970-06-01), Benteler et al.
patent: 3741849 (1973-06-01), Hardy
patent: 4846268 (1989-07-01), Beldam et al.
patent: 4969512 (1990-11-01), Hisao et al.
patent: 5946940 (1999-09-01), Inoue
patent: 6189606 (2001-02-01), Chevallier
patent: 6315037 (2001-11-01), Haussmann
patent: 6467536 (2002-10-01), Abate et al.
patent: 372 448 (1963-10-01), None
patent: 966 689 (1950-10-01), None
patent: 1349270 (1963-12-01), None
patent: 1375437 (1964-09-01), None
patent: 596482 (1959-07-01), None
patent: 04100634 (1992-04-01), None
Coleman Sudol Sapone P.C.
Leo Leonard R.
Sapone William J.
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