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. 09, 1989
Filed:
Oct. 05, 1987
Takashi Hayashi, Kariya, JP;
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
A control apparatus for an electrically driven power steering system for a fork lift truck includes a torque sensor for generating torque signals when a steering torque is applied to the steering wheel, a load weight sensor for generating load weight signals corresponding to the load weight placed on the truck and a control circuit for supplying a driving torque to the steering assist motor in accordance with steering assist characteristics determined in accordance with the aforementioned torque signals and load weight signals. The control apparatus may also include a vehicle speed sensor so that the steering assist characteristics will be determined with the vehicle speed simultaneously taken into account.