Carbon commutator

Details Carbon commutator Carbon commutator

1997-10-03

1999-06-15

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

29597, H01R 3906, H01R 4306

Patent

active

059125233

ABSTRACT:
A carbon-segment face commutator assembly for an electric motor includes an annular array of copper conductor sections stamped from a single copper blank. The annular array is overmolded with an electrical-conducting resin-bonded carbon composition which mechanically interlocks the conductor sections and defines a circular commutating surface. During overmolding, radial grooves are formed in a bottom surface of the carbon overmold opposite the commutating surface. An annular hub is then formed by overmolding an insulator material around and under the carbon overmold and the conductor section array. The hub insulator material flows into the radial grooves of the carbon overmold and leaves only the circular commutating surface exposed. The carbon overmold is formed into an annular array of eight electrically-isolated carbon segments by machining radial slots inward from the commutating surface of the carbon overmold to the underlying radial grooves. The slots are cut slightly into the insulator material occupying the radial grooves to ensure that the carbon overmold is completely cut through and the carbon segments are electrically isolated from each other.

REFERENCES:
patent: 3538365 (1970-11-01), Reisnecker
patent: 3861027 (1975-01-01), Allen
patent: 3983431 (1976-09-01), Hancock
patent: 4358319 (1982-11-01), Yoshida et al.
patent: 5157299 (1992-10-01), Gerlach
patent: 5175463 (1992-12-01), Farago et al.
patent: 5255426 (1993-10-01), Farago et al.
patent: 5386167 (1995-01-01), Strobl
patent: 5442849 (1995-08-01), Strobl
patent: 5530311 (1996-06-01), Ziegler
patent: 5552652 (1996-09-01), Shimoyama et al.
patent: 5677588 (1997-10-01), Strobi
Sears et al., University Physics, Sixth Edition, Addison-Wesley Series in Physics, pp. 539-540, 1984.

Affiliated with

Also associated with

Rating

Carbon 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 Carbon commutator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon commutator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-404487