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:
Apr. 06, 1993
Filed:
May. 27, 1992
Tsunehisa Terayama, Katsuta, JP;
Takuji Torii, Ushiku, JP;
Shinki Ohtsu, Ibaraki, JP;
Hiromu Utsumi, Katsuta, JP;
Teruo Suzuki, Hitachi, JP;
Toshifumi Kubota, Katsuta, JP;
Yo Kawakami, Mito, JP;
Yasuyuki Hirano, Katsuta, JP;
Akira Uno, Hitachioota, JP;
Hitachi Koki Company Limited, Tokyo, JP;
Abstract
A combustion gas powered tool includes a member defining a part of cylindrical combustion chamber having an axis. A piston is movable in a direction along the axis of the combustion chamber. The piston defines the combustion chamber in conjunction with the member. A mixture of air and fuel is generated in the combustion chamber. The air-fuel mixture in the combustion chamber is burned to drive the piston. An orifice grille extends in the combustion chamber, and is parallel to the axis of the combustion chamber.