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:
Aug. 10, 1982
Filed:
Mar. 07, 1980
Akio Numasawa, Nagoya, JP;
Ryouhei Kizu, Toyota, JP;
Mitsuru Naka, Toyota, JP;
Nobuo Hiraiwa, Toyota, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
A power steering device comprising: an input and an output shafts connected to each other by a torsion bar in a manner to be relatively rotatable in the same direction; a valve spool concentrically disposed around said input shaft and axially movably provided; balls provided in first moving paths and engaged with said valve spool; and pins formed on said valve spool and engaged with second moving paths. Said first moving paths are given torsions at a certain angle with respect to said second moving paths. Said valve spool is axially moved in accordance with a relative rotation between said input and output shafts to change one oil channel over to the other.