Metal plate laminated body

Details Metal plate laminated body Metal plate laminated body

1988-06-20

1990-02-13

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having marginal feature for indexing or weakened portion for...

428573, 428582, 428594, 336217, H01F 2726

Patent

active

049006363

ABSTRACT:
There is disclosed a metal plate laminated body. When a portion encircled by inner and outer closed curves is embossed, a projection is protruded from a lower surface of a metal plate. Since a width of protrusion is slightly larger than that of a recess, when press-fitting the projection into the recess of the contiguous metal plate, an outer peripheral surface of the projection which is formed along the outer closed curve is brought into press-contact with an outer peripheral surface of the recess; and an inner peripheral surface of the projection which is formed along the inner closed curve similarly comes in press-contact with an inner peripheral surface of the recess. These inner and outer peripheral surfaces cooperate to become effective contactual surfaces, and the contiguous metal plates are joined to each other.

REFERENCES:
patent: 2671951 (1954-03-01), Sliwiak
patent: 2912608 (1959-11-01), Ploran
patent: 2975312 (1961-03-01), Ploran
patent: 3202851 (1965-08-01), Zimmerle et al.
patent: 3590208 (1971-06-01), Martini
patent: 4160182 (1979-06-01), Mitsui
patent: 4264663 (1981-04-01), Beenken
patent: 4272579 (1981-06-01), Mitsui
patent: 4364169 (1982-12-01), Kawano et al.
patent: 4728842 (1988-03-01), Martin

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