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:
Nov. 17, 1998
Filed:
Dec. 23, 1997
Naoki Kira, Anjo, JP;
Katsuhiko Eguchi, Kariya, JP;
Kazumi Ogawa, Toyota, JP;
Motoo Nakamura, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Abstract
A valve timing control device includes a rotation shaft for opening and closing a valve, a rotation transmitting member rotatably mounted on the rotation shaft, a vane connected to one of the rotation shaft and the rotation transmitting member, a chamber defined between the rotation shaft and the rotation transmitting member and divided into a first pressure chamber and a second pressure chamber by the vane extending into the chamber, a first fluid passage in fluid communication with the first pressure chamber for supplying and discharging the fluid therein and therefrom, respectively, a second fluid passage in fluid communication with the second pressure chamber for supplying and discharging the fluid therein and therefrom, a retracting hole formed on one of the rotation shaft and the rotation transmitting member, a locking pin slidably fitted in the retracting hole and urged toward the other of the rotation shaft and the rotation transmitting member, a receiving hole formed on the other of the rotation shaft and the rotation transmitting member and in which a part of the locking pin is fitted when the relative phase between the rotation shaft and the rotation transmitting member is in a predetermined phase, and a third fluid passage in fluid communication with the receiving hole only when the relative phase between the rotation shaft and the rotation transmitting member is in the predetermined phase.