Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1986-07-29
1988-03-01
Echols, P. W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
474141, B21K 130
Patent
active
047276363
ABSTRACT:
The method includes providing an aluminum plate having an outer peripheral portion in an elliptic shape, the outer peripheral portion including a plurality of tooth portions. An intermediate element is formed by pressing the aluminum plate to cause the outer peripheral portion of the plate to project unidirectionally in a thickness direction with respect to a radially inward portion of the intermediate element to form a flange at the outer peripheral portion. The plurality of tooth portions are formed at this flange. A plurality of teeth members are formed by cutting the flange of the intermediate element in a thickness direction thereof at an outer surface in a projecting direction of the flange to reduce the thickness of the flange relative to the thickness of the intermediate element.
Echols P. W.
Shimano Industrial Company Limited
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