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:
Apr. 28, 1987
Filed:
May. 10, 1985
Kohei Kusaka, Sayama, JP;
Kabushiki Kaisha Komatsu Seisakusho, Tokyo, JP;
Abstract
A brake system for a construction vehicle which ensures the safety of the vehicle when it is parked on a sloping road and started again, and enables the vehicle to get away for itself from a dangerous place where it has been brought to an emergency stop. It includes a battery relay which is closed if a main switch is turned on, a parking brake switch provided with a self-holding relay, an emergency brake switch and a solenoid valve for a parking brake. The parking brake switch, emergency brake switch and solenoid valve are connected in series to a power source via the battery relay one after another. The system may further include a parking brake relay connected between the battery relay and the solenoid valve and adapted to close if the emergency brake switch is closed when an electric current can flow through the parking brake switch, and a neutralizer relay connected between the battery relay and a direction circuit for a transmission gear in the vehicle and adapted to close when an electric current can flow through the parking brake switch.