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:
Aug. 04, 2009
Filed:
Feb. 27, 2007
Hiroshi Miyazaki, Hikone, JP;
Akira Kawai, Hikone, JP;
Hiroshi Miyazaki, Hikone, JP;
Akira Kawai, Hikone, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Abstract
In a control drive circuit for an electric power tool, a bridge-structured motor, which has a bridge structure and includes switching elements and a motor body, is connected to a power supply unit without any mechanical contacts, and an electric power is supplied to a control circuit for controlling the switching elements by turning on a trigger switch. Further, a circuit switch is provided at power supply sides of drive circuits for driving the switching elements, the circuit switch being controlled by the control circuit to interrupt supply of the electric power to the drive circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile