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:
Oct. 20, 1992
Filed:
Jul. 25, 1991
Mitsuhiro Umeyama, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A torsional damper type flywheel device includes drive side and driven side flywheels, a first spring mechanism connecting the drive side and driven side flywheels, a second spring mechanism which may include an air cushion spring, and a viscous damping mechanism arranged in series with the second spring mechanism. The series combination of the second spring mechanism and the viscous damping mechanism is arranged parallel to the first spring mechanism and connects the drive side and driven side flywheels. This flywheel device continuously changes its vibrational bahavior between two characteristics due to the action of the viscous damping mechanism. Due to the vibrational behavior change, no notable resonance occurs when the rotational speed passes through the resonance speed of the flywheel device. A continuously sliding friction mechanism is not used.