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:
Jan. 29, 2013
Filed:
Jul. 30, 2010
Yasuhiro Kakiuchi, Anjo, JP;
Shinya Bito, Anjo, JP;
Yasuhiro Kakiuchi, Anjo, JP;
Shinya Bito, Anjo, JP;
Makita Corporation, Anjo-Shi, JP;
Abstract
It is an object of the invention to provide a power tool that effectively prevents leakage of lubricant while regulating the internal pressure of a housing space for a driving mechanism. The object can be achieved by a representative power tool that includes a too bita driving mechanisman enclosed housing spacewhich houses the driving mechanism and in which lubricant is sealed in, and a pathwhich regulates pressure of the housing space. On the path, a filter chamberhaving a predetermined capacity, an inner passagethat communicates the filter chamberwith the housing space, and an outer passagethat communicates the filter chamberwith the outside are formed. A filteris disposed in the filter chamberand spaced apart from a peripheral edge of an opening of the outer passagewhich is open to the filter chamberso that a spaceis created on the opening edge side of the filter chamberA throttle memberis disposed in the spaceand throttles flow of air which flows out to the outer passagethrough the filter