Electricity: motive power systems – Motor-reversing
Patent
1996-04-08
1998-03-31
Masih, Karen
Electricity: motive power systems
Motor-reversing
318292, 318541, 318542, 388836, H02P 100
Patent
active
057342407
ABSTRACT:
A bidirectional DC motor comprising a commutator (6) which can be connected to a constant voltage source by a first and a second brush. The second brush is disposed opposite one side of the first brush in a spaced disposition with respect to the periphery of the commutator, which spacing correlates with a desired motor characteristic to provide a relatively convenient arrangement for switching the direction of rotation of a DC motor. In addition to the second brush (8) provided for one direction of rotation, the commutator (6) also has a third brush (9) for the counter-direction of rotation and is disposed in a spaced disposition with respect to the periphery of the commutator (6), which spacing correlates with the desired motor characteristic for the counter-direction of rotation. The first brush (7) is connected to one pole (+) of the constant voltage source (10) and the two other brushes (8, 9) are connected to the other pole (-) of the constant voltage source (10) by a switch (S1, S2) respectively.
REFERENCES:
patent: 4367887 (1983-01-01), Takada
patent: 4827897 (1989-05-01), Yamada et al.
patent: 4997237 (1991-03-01), Ricker et al.
Borgmann Uwe
Janca Reiner
Leopold Kostal GmbH & Co. KG
Masih Karen
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