Electric motor

Details Electric motor Electric motor

2009-08-04

2011-11-01

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S227000, C310S239000, C310S242000

Reexamination Certificate

active

08049380

ABSTRACT:
An electric motor has a stator and a rotor. The stator has a housing with inlets and outlets. The rotor has a shaft, a rotor core and a commutator. A fan is fixed to the rotor. An end cap is fitted to the housing to close a first end of the housing and support electrical components, including brush gear. The brush gear includes two brush assemblies, each comprising a brush for making sliding electrical contact with the commutator and a brush guidance mechanism for resiliently urging the brush into contact with the commutator. The brush assemblies are accommodated in compartments of the end cap. Each compartment has vents on an axially facing side thereof and openings in a transverse wall thereof. An air guide guides a part of the airflow generated by the fan exiting from at least one of the outlets of the housing to flow into the compartments via the openings and exit the compartments via the vents to cool the brushes.

REFERENCES:
patent: 1492931 (1924-05-01), Nobuhara
patent: 2057637 (1936-10-01), Schneider
patent: 2460752 (1949-02-01), Jacobsen
patent: 2628320 (1953-02-01), Humphrey
patent: 2989995 (1961-06-01), Happe
patent: 3073976 (1963-01-01), Wesolowski
patent: 3085603 (1963-04-01), Stanley
patent: 3749953 (1973-07-01), Baumann et al.
patent: 4142120 (1979-02-01), Hallerback
patent: 4293788 (1981-10-01), Binder
patent: 4492885 (1985-01-01), Kitamura et al.
patent: 4680493 (1987-07-01), Ziegler et al.
patent: 4908538 (1990-03-01), Geberth, Jr.
patent: 6011331 (2000-01-01), Gierer et al.
patent: 6031306 (2000-02-01), Permuy
patent: 6144121 (2000-11-01), Ishida et al.
patent: 6586853 (2003-07-01), Ishida et al.
patent: 6977452 (2005-12-01), Ibach
patent: 7804208 (2010-09-01), Hui
patent: 2005/0134126 (2005-06-01), Ibach
patent: 556416 (1993-08-01), None
patent: 01198242 (1989-08-01), None
patent: 02246752 (1990-10-01), None
patent: 10073096 (1998-03-01), None
patent: 2000139058 (2000-05-01), None
patent: 2002247808 (2002-08-01), None
patent: 2003102148 (2003-04-01), None
patent: 2004297891 (2004-10-01), None
patent: 2007202253 (2007-08-01), 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-4254390