Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-03-17
1993-11-30
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 45, 310220, 310235, H02K 1300
Patent
active
052668606
ABSTRACT:
A commutator has a central support supporting a plurality of conductive segments separated by a plurality of insulative segments. In addition to providing an insulative function between the conductive segments, the dielectric constant, the area, and the thickness of the insulative segments are chosen so that they provide a capacitive effect, which capacitive effect suppresses current peaks during operation of the commutator. Preferably, the dielectric constant is greater than 10. The central support may include a metal shaft and an insulating ring, which insulating ring is preferably of material with a lower dielectric constant thereby to suppress-shorting between the shaft and the conductive segments. It is particularly advantageous if the conductive and insulative segments are of ceramics material since this provides good wear resistance. In further alternatives, capacitors are formed between the conductive segments by rings or other bodies of insulative materials of a suitably high dielectric constant.
REFERENCES:
patent: 1255681 (1918-02-01), Zenk
patent: 1393878 (1921-10-01), Apple
patent: 3487248 (1969-12-01), Kaneko
patent: 3488538 (1970-01-01), Hayashi
patent: 3594598 (1969-10-01), Schaub
patent: 3777367 (1973-12-01), Kalagidis
patent: 4603474 (1986-08-01), Gobrecht
patent: 4833357 (1989-05-01), Tamura
patent: 4845395 (1989-07-01), Bost
patent: 4868440 (1989-09-01), Gerlach
patent: 4881000 (1989-11-01), Wang
patent: 5003212 (1991-03-01), Ibe
patent: 5008577 (1991-04-01), Wang
patent: 5124604 (1992-06-01), Nagasaka
Patent Abstracts of Japan vol. 4, No. 71 (E-012) May 24, 1980 & JP-A-55 041 177 (Matsushita Electric Works Ltd.) Mar. 22, 1980.
Chiba Akio
Sobue Masahisa
Suzuki Shun
Tahara Kazuo
Yamashita Nobuyuki
Hitachi , Ltd.
Skudy R.
LandOfFree
Commutator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Commutator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Commutator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2099281