Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1975-10-23
1976-11-02
Shedd, Wayne L.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
118637, B21B 3102
Patent
active
039888169
ABSTRACT:
An improved roller, consisting in part of a cylindrical permanent magnet, for use in electrostatic record developing devices is disclosed. Of the plurality of magnetic poles formed on the cylindrical surface of the permanent magnet, two of the same polarity are positioned with an auxiliary magnetic pole of opposite polarity located therebetween. The magnetic field intensity of the auxiliary magnetic pole is from about 1/10 to 1/2 that of the other magnetic poles.
REFERENCES:
patent: 3626898 (1971-12-01), Gawron
patent: 3739749 (1973-06-01), Kangas et al.
patent: 3783828 (1974-01-01), Forgo et al.
patent: 3865080 (1975-02-01), Hudson
patent: 3882821 (1975-05-01), Katayama et al.
patent: 3906121 (1975-09-01), Fraser et al.
Shedd Wayne L.
TDK Electronics Company Limited
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