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:
Dec. 23, 2008
Filed:
Sep. 29, 2005
Haruhisa Fujisawa, Hitachinaka, JP;
Yoshitaka Akiba, Hitachinaka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Kenro Ishimaru, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Haruhisa Fujisawa, Hitachinaka, JP;
Yoshitaka Akiba, Hitachinaka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Kenro Ishimaru, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A combustion-powered, fastener-driving tool includes a cylinder and a combustion chamber disposed on top of the cylinder that accommodates a gaseous mixture of existing air in the combustion chamber and fuel injected therein. A spark plug generates a spark to combust the gaseous mixture in the combustion chamber. A trigger produces the spark in the spark plug when operated. A piston is movably supported in the cylinder and driven by combustion in the combustion chamber. A driving blade is coupled to the piston for driving a fastener. A spark controller is provided for generating a plurality of sparks in succession with the spark plug.