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:
Jun. 27, 1989
Filed:
May. 04, 1988
Keiji Satoh, Musashino, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A system for a continuously variable transmission has a line pressure control valve having a spool, a first hydraulic circuit having a pump for supplying oil to the transmission through the line pressure control valve. A second hydraulic circuit is provided for supplying oil to the line pressure control valve so as to shift the spool. A flow rate control valve is provided in the second hydraulic circuit for regulating flow rate of oil passing therein to a constant value, and a reducing valve is provided in the second hydraulic circuit at a downstream position of the flow rate control valve so as to produce a constant pressure of oil. The constant pressure is regulated by a control valve so as to shift the spool of the line pressure control valve, thereby controlling line pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile