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:
Jan. 04, 1994
Filed:
Jan. 29, 1993
Koji Hotta, Aichi, JP;
Kongo Aoki, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
For minimizing a diameter of an apparatus which is located on the cam-shaft and changes a phase between two cam-shafts, a variable valve timing system in an engine having first and second cam-shafts is comprised of a first gear rotatably supported on the first cam-shaft, a second gear fixed to the second cam-shaft, and geared with the first gear to transmit torque to the second cam-shaft, a first device for transmitting torque from the first cam-shaft to the first gear, and for rotating the first gear toward a first position, the first device being located on one end of the first cam-shaft, and a second means for rotating the first gear in a second direction opposite the first direction, toward a second position, the second device being located on one end of the second cam-shaft.