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:
Aug. 30, 2011
Filed:
Aug. 13, 2007
Toru Uchiyama, Tokyo, JP;
Keijiro Murayama, Tokyo, JP;
Toru Uchiyama, Tokyo, JP;
Keijiro Murayama, Tokyo, JP;
Max Co., Ltd., Tokyo, JP;
Abstract
A driving pistonis provided slidably up and down in a driving cylinderarranged in a tool body. By moving a movable sleeveprovided at the upper portion of the driving cylinderup and down, the movable sleeveis brought into contact with and separated from the driving cylinderand a cylinder headprovided above the driving cylinder, whereby a combustion chamber can be opened and closed. Mixture gas obtained by stirring and mixing combustible gas and air together in the combustion chamber by a fanis ignited by an ignition plugdisposed at the cylinder headand explosively combusted. By this high-pressure combustion gas, the driving pistonis impulsively driven, and a drivercoupled to the lower surface side of the driving piston drives nails. Between an exposed base portion of a center electrode of the ignition plugwhich is exposed to the outside facedown and a leading end of the center electrode, there is provided a stagnation partwhich stagnates temporarily a residue remaining after the combustion of the mixture gas.