Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1977-04-05
1978-05-23
Mehr, Milton S.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29420, 75208R, B21K 140, B22F 706
Patent
active
040902846
ABSTRACT:
A sintered pulley hub construction for mounting on a bottom wall of a sheet metal pulley cup. A pair of tubular members is pressure formed in a green compact state from a metal powder mixture. One of the members has a cylindrical body which terminates at one end in an outwardly extending annular flange which forms a hub pulling flange. The other member has an interior annular cavity formed in one end and a radially outwardly extending annular flange formed on the other end. The cylindrical body of the one member is telescopically received within the annular cavity of the other member. The members are joined by sintering to form an integral homogeneous body. The outer surface of the other member has a cylindrical portion extending axially between the radial end flange and an annular shoulder for receiving an axially extending flange of a pulley cup, with the shoulder providing a zone for welding the pulley cup to the hub. The method of forming the improved hub includes the steps of separately pressure-forming each of the tubular members in a green compact state in a pair of molds. Then a cylindrical end portion formed on one of the tubular members is telescopically mounted within an annular interior cavity formed in one end of the other tubular member. The joined members then are sintered in a furnace and the green compacted members cohere to each other and form an integral homogeneous member.
REFERENCES:
patent: 2970905 (1961-02-01), Doll
patent: 3837068 (1974-09-01), Dunn
Aspro, Inc.
Mehr Milton S.
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