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:
Sep. 18, 2012
Filed:
Aug. 13, 2007
Satoshi Osuga, Tokyo, JP;
Satoshi Osuga, Tokyo, JP;
Max Co., Ltd., Chuo-ku, Tokyo, JP;
Abstract
A driving pistonis provided so as to be slidable in an up-down direction within a driving cylinderdisposed within a body. A movable sleeve is fitted on the outer peripheral side of the driving cylinderon the cylinder so as to be movable in the up-down direction. When the movable sleeveis moved upward to abut against a cylinder headprovided in the upper direction, a sealed combustion chamberis formed. When combustible mixed gas is explosively burnt within the combustion chamber, high-pressure combustion gas acts on the driving pistonto thereby impulsively drive the piston, whereby a fastener is driven out by a drivercoupled on the lower surface side of the driving piston. Elastic membersare disposed between the movable sleeveand the cylinder head. The elastic membersbias the movable sleevedownward.