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. 17, 1979
Filed:
Sep. 02, 1977
Mitsuyuki Horie, Susono, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
An engine brake control system comprises a cut-off valve disposed within an exhaust pipe of an internal combustion engine to block the exhausted gas flowing through the pipe and a vacuum motor having a spring loaded diaphragm piston operatively connected to the cut-off valve to close the valve in response to release of an accelerator pedal. In the vacuum motor, first and second chambers facing to the diaphragm piston are communicated with a vacuum source to open the valve during depression of the accelerator pedal in such a manner that only the second chamber is communicated with the atmospheric pressure in response to release of the accelerator pedal to swiftly operate the piston.