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. 31, 1988
Filed:
May. 22, 1986
Applicant:
Inventors:
Assignees:
Fujitsu Ten Limited, Hyogo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
180176 ; 180177 ; 123350 ;
Abstract
A fail-safe circuit of a fixed speed traveling apparatus wherein there are provided with a control valve for introducing an engine negative pressure to an actuator which controls a throttle opening degree, a release valve for introducing an atmospheric pressure to an actuator and a control circuit for controlling the control valve and the release valve. At brake ON, a first cancel signal is supplied to the control circuit for canceling a fixed speed traveling and to open a current passage of the release valve. A second cancel signal is generated to the control circuit in the case where the current passage of the release valve is open.