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:
Nov. 17, 1981
Filed:
Jul. 16, 1979
Koji Nozawa, Higashikurume, JP;
Norio Takegami, Hamamatsu, JP;
Yukio Mizukoshi, Yokohama, JP;
Mitsuo Ikkatai, Ohme, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A synchromesh device for a transmission of an industrial truck such as a fork lift truck includes a main shaft, forward and reverse change gears, synchronizing hub fixed to the main shaft by means of spline grooves, a coupling sleeve axially slidably engaged with spline grooves formed in the outer circumference of the synchronizing hub, and balk-rings formed in their inner surfaces with conical surfaces facing to conical surfaces formed in the side of a clutch gear integral with the forward change gear and of a clutch gear integral with the reverse change gear, respectively. According to the invention, conical angles of the conical surfaces are more than 10.degree. and preferably less than 11.degree., thereby reducing surface pressures acting between the synchronizing slide surfaces during the synchronization to improve the durability remarkably.