Casing for a small motor assembly

Patent 5047679 Issued on September 10, 1991. Estimated Expiration Date:

August 30, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3488836

Combination end bell and brush holder for a dynamoelectric machine
Patent #: 4355253
Issued on: 10/19/1982
Inventor: Vollbrecht

Small electric motor
Patent #: 4420704
Issued on: 12/13/1983
Inventor: Mabuchi

Interlocking frame assembly for an electric motor stator
Patent #: 4465946
Issued on: 08/14/1984
Inventor: Springer

Brush-holder for electrical machines
Patent #: 4475053
Issued on: 10/02/1984
Inventor: Mayer

Small motor assembly
Patent #: 4571515
Issued on: 02/18/1986
Inventor: Baader

Brush holding device for rotating electrical machines
Patent #: 4673838
Issued on: 06/16/1987
Inventor: Takagi , et al.

Brush holder for dynamoelectric machines
Patent #: 4694214
Issued on: 09/15/1987
Inventor: Stewart, Sr.

Electric motors Patent #: 4728835
Issued on: 03/01/1988
Inventor: Baines

Inventors

Application

No. 575023 filed on 08/30/1990

US Classes:

310/89, Housings, windows or covers310/42, With assembling, metal casting or machining feature310/239Brush holders or rigging

Examiners

Primary: Skudy, R.

Attorney, Agent or Firm

Semmes; David H.

Foreign Patent References

0267668 AT 01/13/1969
0048213 EP 03/13/1982

International Class

H02K 005/00

Abstract

Dynamoelectric motors, particularly, a brush and brush holder assembly which comprises three semi-circular motor casing sides manufactured of non-insulating material. The semi-circular casing elements are snap-fitted together so as to support three individual brushes in contact with a commutator. The snap-fitted assembly is characterized by its structural simplicity, as well as ease of manufacture and assembly.