Electric motor

Details Electric motor Electric motor

2011-07-05

2011-07-05

Hanh, Nguyen N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S245000

Reexamination Certificate

active

07973447

ABSTRACT:
An electric motor10has a stator14; a wound rotor20, including a commutator28; and brush gear for connecting the commutator to a source of electrical power. The brush gear has at least two cage brush assemblies34. Each cage brush assembly34having a brush40for making sliding electrical contact with the commutator of the motor; a cage50for guiding the brush40along a path towards the commutator; and a spring70for resiliently urging the brush40along the path through the cage50. The spring70is a constant force spring having two coiled end portions which engage the cage50at a commutator end portion. The cage50has two fingers about which the coiled end portions of the spring70locate.

REFERENCES:
patent: 3983432 (1976-09-01), Rankin
patent: 4625136 (1986-11-01), Kipke
patent: 4800313 (1989-01-01), Warner et al.
patent: 4990811 (1991-02-01), Nakata et al.
patent: 4994701 (1991-02-01), Bulick
patent: 5256925 (1993-10-01), Cutsforth
patent: 5373210 (1994-12-01), Baer et al.
patent: 5397952 (1995-03-01), Decker et al.
patent: 5463264 (1995-10-01), Koenitzer
patent: 5602957 (1997-02-01), Wille et al.
patent: 6731042 (2004-05-01), Bank et al.
patent: 2002/0125786 (2002-09-01), Chi
patent: 30 10 036 (1981-10-01), None

Affiliated with

Also associated with

Rating

Electric motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2678012