Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1995-03-23
1997-10-14
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335229, 25112911, 308 10, 310156, H01F 708
Patent
active
056776594
ABSTRACT:
An electromagnetic actuator rotatable about an axis including a stator magnet circuit (2) with an inner pole (9) having a central core (11), a first pole shoe (12) forming the continuation of the core at one axial end of the stator circuit and extending through an angle of approximately 180.degree., and a single coil (3) coaxially surrounding the central core (11), the core (11) and the coil (3) being off-center relatively to the axis of rotation; and an outer pole (10) having a lateral armature (13.sub.2) in the form of a tubular sector outside the coil (3) and parallel to the core (11), and a second pole shoe (14) forming the continuation of the armature (13.sub.2) at the axial end of the stator circuit and extending through an angle of approximately 180.degree.; the ends of the central core (11) and of the armature (13) which are remote from the respective pole shoes being mutually in contact.
REFERENCES:
patent: 3378799 (1968-04-01), Ouellette
patent: 4082376 (1978-04-01), Wehde et al.
patent: 4345228 (1982-08-01), Idogaki et al.
patent: 4546338 (1985-10-01), Idogaki et al.
patent: 5298825 (1994-03-01), Oudet et al.
Hubertus Murrenhoff et al., "Proportional-Drehmagnet mit Integrierbarem Drehsensor", Othydraulik und Pneumatik, 37 (1993) Nr. 4, pp. 268-276.
Donovan Lincoln
Societe D'Applications Generales D'Electricite et de Mecanique-S
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