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. 09, 2013
Filed:
Dec. 10, 2009
Hiroki Ikuta, Anjo, JP;
Masao Miwa, Anjo, JP;
Takuya Sumi, Anjo, JP;
Makita Corporation, Anjo, JP;
Abstract
It is an object of the invention to reduce noise caused by run-out of a tool bit in an impact tool. The representative impact tool according to the invention includes a tool holderthat houses a tool bitin such a manner that the tool bit can linearly move in its axial direction, and a barrelthat is integrally connected to the tool holderThe impact tool further includes an elastic elementthat is disposed between an inner circumferential surface of the tool holderand an outer circumferential surface of the tool bitin an end region of the tool biton the barrel side and connected in close contact with the tool holderand the tool bitover a predetermined length of the tool bitin the axial direction. The elastic elementapplies a biasing force to prevent a run-out of the tool bitin a direction transverse to the axial direction. Further, an intermediate elementcomes in point contact with the tool biton its axial center line.