Energy Conversion Systems Holdings, LLC

Carbone-lorraine of North America

Valeo Electrical Systems, Inc.

Otway Archer Southall

Alvin Leon Farthing

Shepard Lynn Hockaday

Eugene B Porter

Pimol Ballard Vonkchalee

Richard Q Harding

Harry C Barber

Kenneth P Green

Dan L Shull

Michael Walter Nedriga

Detailed are brush assemblies for electric motors. The assemblies may include retention springs or other mechanisms designed to bias brushes away from surfaces of commutators during assembly of the motors. Such retention mechanisms additionally may be fitted into cavities in associated cover plates following motor assembly. The cover plates further may include tabs which, in use of the motor, assist in supporting side surfaces of the brushes and in orienting the plate relative to a corresponding brush card.

Brush assemblies

A brush box assembly for use in an electric motor and an electric motor having a brush biasing mechanism that also retains the brushes to allow installation of a sliding electrical contact assembly is described. The brush box assembly has a plurality of brush holders each with a brush retention slot, a plurality of brushes each adapted to fit in the brush retention slots, the brushes having a contact face and a non-contact face, and a plurality of torsion springs each having a spring loading arm and a spring retention arm, each spring loading arm contacting one brush on the non-contact face and adapted to bias the brush against a sliding electrical contact after installation of the sliding electrical contact assembly, each spring retention arm adapted to contact one brush on the front side and retain the brush in the brush retention slot during installation of the sliding electrical contact assembly. A method of manufacture of a device having brushes with the biasing and retention mechanism is also disclosed.

Brush box assembly

A motor brush lead frame having one end that is folded upon itself to form a pair of pinching surfaces which are adapted to pinch an electrical terminal to establish electrical contact with the electrical terminal. By folding the lead frame member upon itself to form a pair of pinching surfaces, the problems and costs associated with crimping or otherwise attaching a conventional electrical connector to the lead frame member are eliminated.

Brush holder lead frame with integral electrical terminals

A commutating brush assembly for rotating electrical equipment is constructed to suppress electromagnetic/radio frequency interference emissions, particularly in the radio frequency range. This is achieved by fabricating the EMI/RFI suppressing brush holder assembly from a material that itself suppresses EMI/RFI emissions generated by electromagnetic apparatus such as motors, generators, rotary switch gears, etc. The EMI/RFI emission suppression capability of the novel assembly may be further enhanced by the addition of certain add-on electrical components such as capacitors or radio frequency choke coils and the like.

EMI/RFI suppressing brush holder assembly for electric machines

A brush holder plate assembly comprising a brush holder plate fabricated from electrically insulating thermoplastic material and having a plurality of sets of spaced-apart, parallel, raised guiding and support rails integrally formed on one surface of the plate. The plate further has a centrally formed aperture of sufficient cross sectional dimension to be slipped over the commutator of an electric machine after complete assembly of all the parts of the machine. The sets of spaced-apart, parallel, raised guiding and support rails project radially outward away from the centrally formed aperture like the spokes of a wheel. A plurality of snap-in-place, brush holder cartridges are removably secured by slide catches to the respective sets of spaced-apart parallel raised guiding and support rails for physically supporting commutating brushes in an array surrounding the commutator of the electric machine with one exposed end of each brush in physical and electrical contact with the commutator. For this purpose, the brush holder cartridges each further include biasing springs for spring tensioning brushes into physical and electrical engagement with the commutator of an electric machine to supply or conduct electric current between the commutator and the brush and the electric current supply.

Growing community of inventors

Farmville, VA, United States of America

Otway Archer Southall