192 clutches and power-stop control – Clutches – Operators
Patent
1991-04-09
1992-02-25
Braun, Leslie A.
192 clutches and power-stop control
Clutches
Operators
192 81C, 192 26, F16D 2700
Patent
active
050905384
ABSTRACT:
An electromagnetic spring clutch has an armature (40) which can be moved to and from in the axial direction thereof and cannot be rotated on the axis, and which is biased by a spring (46), and a coil spring (36) which covers over outer faces of a master driving axle (30) and a slave driving axle (34) and which is capable of being wound tightly in the rotational direction of the master driving axle (30). When an electromagnetic coil (20) is not energized, an engagement section (44a) at the end of the armature (40) and a hook (38) of the coil spring (36) are engaged to expand the inner diameter of the coil spring (36) and disconnect the master driving axle (30) and the slave driving axle (34). When the electromagnetic coil (20) is energized to attract the armature (40) thereto against the biasing force of the spring (46), the engagement section (44a) and the hook (38) are disengaged to reduce the inner diameter of the coil spring (36) and connect the master driving axle (30) and the slave driving axle (34), whereby a prescribed rotational angle of the master driving axle (30) is transmitted to the slave driving axle (34).
REFERENCES:
patent: 3006448 (1961-10-01), Fox
patent: 3021512 (1962-02-01), Welsh et al.
patent: 3177996 (1965-04-01), Bates
patent: 3185276 (1965-05-01), Sajovec
patent: 3349880 (1967-10-01), Baer
patent: 4262787 (1981-04-01), Takefuta
patent: 4321992 (1982-03-01), Gallo
patent: 4465171 (1984-08-01), Koyama
patent: 4502578 (1985-03-01), Koyama
patent: 4570768 (1986-02-01), Nishimura et al.
patent: 4638899 (1987-01-01), Kossett
Braun Leslie A.
Tenryu Marusawa Kabushiki Kaisha
Whitelaw Nicholas
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