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:
Jan. 30, 2001
Filed:
Dec. 02, 1998
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
An apparatus for controlling pivoting the rear axle of a forklift. The forklift includes forks, which are lifted and lowered relative to a body frame. A locking mechanism, which includes a hydraulic damper and an electromagnetic valve, locks the rear axle to stabilize the body frame. A controller controls the locking mechanism to lock the rear axle when the fork height is at least as great as a predetermined height threshold value and the weight of a load on the fork is at least as great as a predetermined weight threshold value. The controller also controls the locking mechanism to lock the rear axle when the lateral acceleration is at least as great as a predetermined threshold value. Further, the controller changes the threshold value of the lateral acceleration in accordance with the fork height.