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:
Mar. 17, 2009
Filed:
Dec. 20, 2004
Kazumi Ogawa, Toyota, JP;
Atsushi Sato, Toyota, JP;
Kazumi Ogawa, Toyota, JP;
Atsushi Sato, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Abstract
A valve opening/closing timing controlling apparatus includes a housing memberrotatable together with a timing gear(drive member), a rotor memberrotatably assembled with the housing member, a vaneportion of the rotor member forming, within the housing member, a phase-advanced oil chamber Rand a phase-lagged oil chamber R, the rotor member being rotatable together with a cam shaft, a torsion coil springfor urging the rotor memberrelative to the housing memberin a phase advancing direction, and a phase-advanced oil passage (hydraulic circuit)or a phase-lagged oil passage (hydraulic circuit)a hydraulic circuit for controlling feeding/discharging of work oil to or from the phase-advanced oil chamber Ror the phase-lagged oil chamber R. The torsion coil springhas one endthereof fixed to the housing memberand the other endthereof fixed to a projectionprovided on the rotor member