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:
Jul. 13, 2021
Filed:
Jan. 08, 2016
Hitachi Koki Co., Ltd., Tokyo, JP;
KOKI HOLDINGS CO., LTD., Tokyo, JP;
Abstract
An impact tool that realizes an ON-lock function with a simple mechanism and makes it possible to switch between activation and deactivation of the ON-lock function with few operation processes is provided. A hammer drill having at least two operating modes including a hammer mode in which an impact force is transmitted to a tool bit whereas a rotational force is not transmitted thereto includes: a motor as a power source; a trigger lever and an ON-lock button that are operated by an operator; a sensor that detects whether a selected operating mode is the hammer mode or not; and a controller that controls the motor based on an operation of the trigger lever and the ON-lock button. When the ON-lock button is operated while the hammer mode is selected, the controller performs ON-lock control to maintain the motor in the operating state even when the trigger lever is not operated.