Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1994-11-28
1996-04-30
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335219, 335225, 335272, 335276, 310 90, 310 75D, H01F 708, H01F 100, H02K 516, H02K 710
Patent
active
055128718
ABSTRACT:
A constant-torque single-phase electromagnetic actuator including a stationary device including a first magnetic stator circuit made of a high-permeability material and excited by at least one field coil (10), and a movable device (1) including an axially magnetized disc (3) having 2N pairs of magnetic poles magnetized in alternate directions, wherein the magnetization is substantially uniform. The magnetized disc (3) is attached to a second magnetic circuit (6) made of a high-permeability material, and the movable device is provided with a coupling shaft (7). The connection between the stationary device (1) and the movable device (2) allows at least some axial play of the coupling shaft (7) away from the stationary stator device (2), and the diameter of the magnetized disc (3) is substantially identical to that of the poles of the stator circuits. Play between the stationary (2) and Movable (1) devices is compensated by the magnetic attraction exerted by the stationary device on the movable one.
REFERENCES:
patent: 3579276 (1971-05-01), Newell
patent: 3794865 (1974-02-01), Guttinger
patent: 3807813 (1974-04-01), Milligan
patent: 4255682 (1981-03-01), Toida
patent: 4371817 (1983-02-01), Muller
patent: 4518883 (1985-05-01), Oudet
patent: 4633149 (1986-12-01), Welterlin
patent: 4682067 (1987-07-01), Oudet
patent: 4714854 (1987-12-01), Oudet
patent: 4728833 (1988-03-01), Shiraki
patent: 4782255 (1988-11-01), Oosaka
patent: 4823040 (1989-04-01), Oudet
patent: 4837474 (1989-06-01), Peterson
patent: 4839551 (1989-06-01), Tomisawa
patent: 5053667 (1991-10-01), Oudet
patent: 5298825 (1994-03-01), Oudet
patent: 5300849 (1994-04-01), Elsasser
Oudet Claude
Prudham Daniel
Moving Magnet Technologies (S.A.)
Picard Leo P.
Ryan Stephen T.
LandOfFree
Rotatable single-phase electromagnetic actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotatable single-phase electromagnetic actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotatable single-phase electromagnetic actuator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-631703