Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1973-07-09
1976-02-10
Padgett, Benjamin R.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
75208R, B22F 100, B22F 700
Patent
active
039376184
ABSTRACT:
A method is provided for producing a bi-metal object comprised of at least one image area raised in relief on the base of the object. The area in relief and the base of the object consist of different metals. The method comprises compacting the metal powder which will constitute the image area raised in relief; compacting the metal powder which will constitute the base of the bi-metal object while that powder is in direct contact with the metal powder already compacted to form the area in relief; sintering the composite at a relatively low temperature and for a preferred interval of time; and striking a chosen design on the base of the bi-metal object. The finished product will comprise an image area raised in relief which will be of appreciable height; the image area raised in relief will be separated from the base by a sharp regular border; and the base may retain a proof finish.
REFERENCES:
patent: 3360348 (1967-12-01), Schreiner
patent: 3367752 (1968-02-01), Johnson
patent: 3373003 (1968-03-01), Schreiner
patent: 3499739 (1970-03-01), Segel
Knopp et al. et al., International Journal of Powder Metallurgy, Vol. 3, No. 1, pp. 57-62, (1967).
Franklin Mint Corporation
Hunt B.
Padgett Benjamin R.
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