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:
May. 21, 1991
Filed:
Mar. 15, 1990
Applicant:
Inventor:
Takayoshi Muramatsu, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushihiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D / ; B62K / ; B60K / ;
U.S. Cl.
CPC ...
180225 ; 180227 ; 180 683 ;
Abstract
A motorcycle construction that lends itself to motocross use and yet which has a lightweight racing type frame with an engine arrangement to provide a low center of gravity. Although the engine is positioned low in the frame, its components and specifically the intake and exhaust system are designed so as to be well protected and a protective covering surrounds the engine so as to also protect it. This protective covering is formed by a liquid tank such as a fuel tank for the engine and also serves to reinforce the frame assembly.