Electric motor with a low number of revolutions, in...

Details Electric motor with a low number of revolutions, in... Electric motor with a low number of revolutions, in...

2007-03-19

2010-12-14

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S076000, C310S104000, C310S105000, C310S112000

Reexamination Certificate

active

07851956

ABSTRACT:
An electric motor (10) with a low number of revolutions comprises a rotor (17) powered by three-phase alternating voltage, a series of magnets (21, 22) and a coil forming a stator (24), in which the rotor (17) and the stator (24) have the same number of magnetic poles. The stator (24) is powered with direct voltage, and the frequency of the rotor voltage (17) is varied to obtain a predetermined number of rpm of the motor and to vary the acceleration and deceleration conditions of the motor. A thrust bearing opposes the effort of the falling brake disc.

REFERENCES:
patent: 1535774 (1925-04-01), Hibbard
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patent: 4713567 (1987-12-01), Fey et al.
patent: 6333577 (2001-12-01), Kusumoto et al.
patent: 2002/0171305 (2002-11-01), Coupart et al.
patent: 2003/0042813 (2003-03-01), Morikaku et al.
patent: 3511408 (1985-10-01), None
patent: 0695662 (1996-02-01), None
patent: 1010660 (2000-06-01), None
patent: 1642858 (2006-04-01), None
patent: 1642858 (2006-04-01), None
patent: 2807887 (2001-10-01), None
patent: 1359351 (1971-08-01), None
patent: 1359351 (1974-07-01), None
patent: 61076040 (1986-04-01), None
MAchine Translarion GB1359351 (1971) and EP1642858 (2006).

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