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:
Oct. 17, 2006
Filed:
Apr. 19, 2005
Yoshitaka Akiba, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Kunio Yamamoto, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Haruhisa Fujisawa, Hitachinaka, JP;
Yoshitaka Akiba, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Kunio Yamamoto, Hitachinaka, JP;
Shinki Ohtsu, Hitachinaka, JP;
Haruhisa Fujisawa, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A combustion-type nail driver uses a motor for driving a fan. A motor holder formed from plastic accommodates the motor. A cylinder head has a motor holder receiving portion in which the motor holder is slidably movably disposed. A coil spring has one end secured to the motor holder and another end secured to the cylinder head to thereby support the motor holder. Initial acceleration applied to the motor when combustion occurs can be suppressed and impact imparted upon the motor can also be suppressed by friction between the outer periphery of the motor holder and the inner periphery of the motor holder receiving portion. A heat shielding plate is interposed between the lower end surface of the motor and the cylinder head in order to prevent hot air combustion gas from entering into the motor.