192 clutches and power-stop control – Clutches – Operators
Patent
1983-03-30
1986-10-14
Staab, Lawrence
192 clutches and power-stop control
Clutches
Operators
1921061, 474 69, 474 84, 474101, F16D 1900, F16D 2700
Patent
active
046167420
ABSTRACT:
An electromagnetic clutch is disclosed which includes a pulley and an electromagnetic coil. A hub is secured on a drive shaft and has a radially extending flange portion which faces the pulley at a predetermined axial gap. An armature plate is disposed in the axial gap between the pulley and the radially extending flange portion of the hub. The armature plate is elastically connected to the flange portion of the hub by a plurality of spring members. The spring members are provided with a pair of fittings radially opposed to one another at a predetermined radial gap to prevent excessive bending of the spring members during initial operation of the electromagnetic clutch. When the armature plate beings to rotate, each spring member bends to reduce the gap between the pair of radially opposed fittings to thereby absorb the impact force. Therefore, the impact force on the drive shaft when the electromagnetic clutch is first actuated is lessened by the bending of the spring members while, at the same time, over bending of the spring members is prevented by the fittings.
REFERENCES:
patent: 1543360 (1925-06-01), Bjering
patent: 1863182 (1932-06-01), Bixby
patent: 1896025 (1933-01-01), Griswold
patent: 1975772 (1934-10-01), Davis
patent: 2630692 (1953-03-01), Naugler
patent: 3044594 (1962-07-01), Bernard
patent: 3082933 (1963-03-01), Bernard
patent: 3246485 (1966-04-01), Chapman
patent: 3283538 (1966-11-01), Trefny
patent: 3489256 (1970-01-01), Binder et al.
Sanden Corporation
Staab Lawrence
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