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. 01, 1977
Filed:
Jun. 23, 1975
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JA;
Abstract
An automatic choke valve apparatus for an internal combustion engine in which an operation shaft connected to a choke valve provided in an intake passage of an internal combustion engine and a driving shaft connected to a pulse motor are connected together through an intermediate torsion spring and are engaged with one another through circumferentially disposed front and rear pawls for being feed-driven only in regular direction of rotation of the driving shaft. The choke valve is given a starting position setting in such manner that, by the operation of the pulse motor, the driving shaft undergoes excessive rotation beyond the fully closed position of the choke valve. A fast-idle cam cooperating with a throttle valve provided in the intake passage is angularly extended in one direction so as to form a low temperature cam portion comparatively large in cam height and the fast idle cam is connected to the driving shaft through a gang mechanism such as a link, so that in the course of excessive rotation of the driving shaft, the cam undergoes excessive rotation corresponding thereto and the low temperature cam portion is placed into operating position.