Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2006-10-31
2006-10-31
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C029S469500, C029S507000, C029S513000, C029S521000, C029S896910, C267S179000
Reexamination Certificate
active
07127792
ABSTRACT:
A method of manufacturing a spring assembly, which includes two annular plates and compression coil springs, and which is adapted so that the compression coil springs are assembled to the annular plates by caulking projection portions formed on the two annular plates, respectively. Projection portions are formed at the side of the annular plates. Plural large-diameter walls and plural small-diameter walls are alternately provided in the circumferential direction of each of the projection portions. A punch having a portion, whose diameter is larger than the inside diameter of a space between the small-diameter walls, is inserted into an inner space among the large-diameter walls and the small-diameter walls of each of the projection portions. As the small-diameter walls of each of the projection portions are enlarged in diameter, the large-diameter walls adjoining each of these small-diameter walls are easily enlarged in diameter.
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On-line English translation of JP 2003-025165 A.
Fueki Toshie
Wakamori Masami
McGinn IP Law Group PLLC
Omgba Essama
Piolax Inc.
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