192 clutches and power-stop control – Clutches – Operators
Patent
1979-01-03
1981-11-24
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Operators
F16D 2710
Patent
active
043019064
ABSTRACT:
An electromagnetic clutch for selectively transmitting the rotation of a magnetic pulley to a rotatable shaft by the magnetic attraction of an annular magnetic armature plate elastically supported on the shaft to an axial end of the pulley produced by the energization of an electromagnet stationarily disposed in a radial hollow portion of the pulley. A radial inner wall defining the hollow portion of the pulley is partially thicker in the radial thickness at an axial extent between the axial end of the pulley and the electromagnet, thereby to decrease the magnetic resistance through the axial extent and to strengthen the magnetic attraction force between the pulley and the armature without increasing the outer diameter of the clutch. A magnetic ring may be partially fitted to the inner wall to substantially increase the radial thickness in place of the partial increase of the radial thickness of the inner wall itself.
REFERENCES:
patent: 647436 (1900-04-01), Beck
patent: 1622261 (1927-03-01), Payne
patent: 2857998 (1958-10-01), Harter
patent: 3455421 (1969-07-01), Miller
patent: 3842378 (1974-10-01), Pierce
patent: 3876048 (1975-04-01), Briar
patent: 4122930 (1978-10-01), Bennett et al.
patent: 4160498 (1979-07-01), Newton et al.
patent: 4227600 (1980-10-01), Shirai
Bonck Rodney H.
Sankyo Electric Company Limited
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