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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7919899 B1

PDFFull Text
Expired
Date of Patent:
Apr. 05, 2011

Filed:

Jan. 18, 2007

Electrical machine

Applicants:

Thomas Weigold, Bamberg, DE;

Christian Schneider, Lauf, DE;

Andreas Saum, Buehl, DE;

Inventors:

Thomas Weigold, Bamberg, DE;

Christian Schneider, Lauf, DE;

Andreas Saum, Buehl, DE;

Assignee:

Robert Bosch GmbH, Stuttgart, DE;

Attorney:

Ronald E. Greigg

Primary Examiner:

Quyen Leung

Assistant Examiner:

Jose A Gonzalez Quinones

Int. Cl.
CPC ...
H02K 13/00 (2006.01); H02K 21/00 (2006.01); H02K 23/20 (2006.01); H02K 13/12 (2006.01); H01R 39/04 (2006.01); H01R 39/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention describes an electrical machine having an armature with armature slots for accommodating armature coils. At least one armature coil is formed from two coil elements which are arranged symmetrically with respect to one another in relation to an axis of symmetry, which runs through the center-point of the armature shaft. The coil elements are connected to two adjacent commutator laminates of a commutator. A first brush, a second brush and a third brush bear against the commutator in a manner such that they can slide. The second brush interacts with the first brush or the third brush. The third brush is arranged in relation to the two coil elements in such a way that, when the two adjacent commutator laminates come into contact with one another, the third brush and the center-point of the armature shaft form an axis which has an angle of 90 DEG−(180 DEG/number of laminates)−(180 DEG/3×number of laminates) up to 90 DEG+(180 DEG/number of laminates)+(180 DEG/3×number of laminates) in relation to the axis of symmetry of the two coil elements.

Find Patent Forward Citations

Weigold, Thomas. (2011). Electrical machine (U.S. Patent No. 7919899). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7919899

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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