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:
Feb. 18, 1986
Filed:
Mar. 28, 1984
Yoshimi Watanabe, Saitama, JP;
Yukio Tada, Saitama, JP;
Takanori Suzuki, Saitama, JP;
Hitoshi Suzuki, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An internal combustion engine includes a crank shaft having a crank web, a crank pin on one end of the crank web, and a weight on an opposite end of the crank web, a crank case supporting the crank shaft therein, a cylinder, a piston reciprocally fitted in the cylinder, a rod coupled to the piston by a piston pin and connecting the piston to the crank pin for reciprocally moving the piston in the cylinder, the crank case having an opening and extending obliquely to axes of the crank shaft and the cylinder. The cylinder has an end corresponding to a bottom dead center of the piston and having a first recess opening toward the opening, the first recess being of a size allowing the piston pin to pass therethrough when the piston is in the bottom dead center. The weight on the crank web has on one side a second recess of a shape defining with the end of the cylinder a space allowing the piston as disconnected from the rod to pass therethrough.