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:
Jul. 24, 2012
Filed:
Aug. 19, 2009
Applicants:
Kunimune Kawamura, Fuchu, JP;
Masato Nara, Nishitokyo, JP;
Inventors:
Kunimune Kawamura, Fuchu, JP;
Masato Nara, Nishitokyo, JP;
Assignee:
Yamabiko Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 3/02 (2006.01); F01P 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power unit for portable chain saws wherein an ignition coil is placed at a position so as to increase both the compactness and the cooling efficiency of the power unit. A coil support on which the ignition coil is supported is formed integratedly with a crank case; adjacent to an open port; and on a part of an external periphery of the flywheel, said second part being not enclosed by the air-guiding passage. The coil support extends from the crank case along a side of a muffler and forms an insulating gap from the muffler.