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:
Jun. 25, 2024
Filed:
Oct. 03, 2022
Makita Corporation, Anjo, JP;
Yasuhito Kawai, Anjo, JP;
MAKITA CORPORATION, Anjo, JP;
Abstract
An impact driver includes a motor, a spindle, a hammer externally and coaxially mounted on the spindle to receive rotation of the spindle and move relative to the spindle in an axial direction, an anvil in front of the hammer and coaxial with the spindle to be struck by the hammer in a rotation direction, and a hammer case accommodating the spindle, the hammer, and the anvil, allowing a front end of the anvil to protrude frontward from the hammer case, and filled with grease. The spindle includes a grease supply path located in the spindle and open in a sliding surface of the spindle on which the hammer slides to allow grease to be supplied to the sliding surface, and an accelerator in the spindle to accelerate a flow of the grease onto the sliding surface along the grease supply path in response to rotation of the motor.