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.:
Date of Patent:
Dec. 10, 2013
Filed:
Aug. 31, 2010
Applicant:
Junichi Nishikimi, Anjo, JP;
Inventor:
Junichi Nishikimi, Anjo, JP;
Assignee:
Makita Corporation, Anjo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25F 5/00 (2006.01); H02K 7/14 (2006.01); H01C 10/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A switch for controlling a rotational speed of a motor includes an operation member, a first circuit, and a second circuit. The first circuit includes a brush coupled to the operation member having a contact and also includes a variable resistive plate having a resistance that changes in response to a contact position of the contact point of the brush, so that the first circuit outputs a control signal to the motor according to the contact position of the contact point. The second circuit connects the brush and the resistive plate without through the contact point when the brush is positioned at a given position relative to the resistive plate.