Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1991-03-14
1992-09-01
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310252, 252502, 252503, 264 291, H02K 1300
Patent
active
051441810
ABSTRACT:
A carbon brush for miniature motors comprising a stator using a permanent magnet as the field, and a rotor on which a rotor winding is wound, and having a commutator for feeding current to the rotor winding and brushes, formed by bonding graphite powder, for making sliding contact with the commutator; the brush being a metal-plated graphite brush formed by adding 0.1 wt. % to 12.0 wt. % of a fibrous material of particle sizes less than 40 microns and lengths less than 50 microns to metal-plated graphite powder formed by coating graphite powder with a metallic layer, and pressure-forming and sintering a mixture of the metal-plated graphite powder and the fibrous material; the graphite powder containing less than 0.05 wt. % of ashes, and the method of making the same.
REFERENCES:
patent: 1202818 (1916-10-01), Edgecomb
patent: 2041895 (1936-05-01), Bemis et al.
patent: 2098062 (1937-11-01), Palmer
patent: 2252277 (1941-08-01), Tate et al.
patent: 3173045 (1965-03-01), Oliver
patent: 3772080 (1973-11-01), McKee
patent: 4119572 (1978-10-01), Fridman et al.
patent: 4347456 (1982-08-01), Chabrerie
patent: 4799957 (1989-01-01), Vogel
Mabuchi Motor Co. Ltd.
Skudy R.
LandOfFree
Carbon brush for miniature motors and method of making same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Carbon brush for miniature motors and method of making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon brush for miniature motors and method of making same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-769726