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:
Jun. 26, 2012
Filed:
Nov. 23, 2005
Tomomasa Nishikawa, Ibaraki, JP;
Shinki Ohtsu, Ibaraki, JP;
Yasuki Ohmori, Ibaraki, JP;
Kunio Yamamoto, Ibaraki, JP;
Tomomasa Nishikawa, Ibaraki, JP;
Shinki Ohtsu, Ibaraki, JP;
Yasuki Ohmori, Ibaraki, JP;
Kunio Yamamoto, Ibaraki, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A fuel gas has a gas including at least 40 weight % or more of 1-butene and propane, or at least 56 weight % or more of 1-butene and propylene. A combustion type power tool is driven by the fuel gas. A compressed gas container for a combustion type power tool has an inner side vessel filled with the fuel gas. When the fuel gas includes propane, 1-butene may be equal to or higher than 59 weight % and equal to or lower than 95 weight %. When the fuel gas includes propylene, the 1-butene may be equal to or higher than 70 weight % and equal to or lower than 96 weight %.