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:
Apr. 24, 2018
Filed:
Mar. 29, 2011
Yutaka Ito, Hitachinaka, JP;
Katsuhiro Oomori, Hitachinaka, JP;
Mizuho Nakamura, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Hironori Mashiko, Hitachinaka, JP;
Yutaka Ito, Hitachinaka, JP;
Katsuhiro Oomori, Hitachinaka, JP;
Mizuho Nakamura, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Hironori Mashiko, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
An electronic pulse driver includes a motor, a hammer, an anvil, an end tool mounting unit, a power supply unit, and a control unit. The hammer is rotatable together with the anvil. The end tool mounting unit transmits the rotation of the anvil to an end tool. The power supply unit supplies a drive electric power to the motor. The control unit controls the power supply unit to halt a supply of the drive electric power to the motor when an electric current flowing to the motor increases to a prescribed value. The control unit controls the power supply unit to supply to the motor a prestart electric power lower than the drive electric power before supplying the drive electric power in order to permit the power supply unit to supply the drive electric power after the hammer is in contact with the anvil.