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:
Mar. 27, 2007
Filed:
Nov. 16, 2005
Yasuki Ohmori, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Yasuki Ohmori, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A combustion-type power 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 switch 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 integrally formed with the piston for driving a fastener. A push lever is provided at one end of the housing and coupled with the combustion chamber frame. A temperature sensor is provided, for example, on the combustion chamber frame to sense the temperature thereof. A stopper is operated to adjust the position of the push lever to be shifted from an initial position when the sensed temperature is higher than a critical value. The push lever is positioned farther from another end of the housing when adjusted than when the push lever is in the initial position.