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:
Jul. 16, 1991
Filed:
Oct. 06, 1989
Mitsuhiro Umeyama, Toyota, JP;
Masaki Inui, Toyota, JP;
Kenichi Yamamoto, Okazaki, JP;
Tsuyoshi Sumi, Toyota, JP;
Toshihiro Ohtake, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A flywheel device with a torsional damper including a driving side flywheel and a driven side flywheel, a first spring mechanism directly connecting the driving and driven side flywheels, and a second spring mechanism connecting the driving and driven side flywheels via a friction mechanism. The second spring mechanism and the friction mechanism are arranged in series with each other and the series combination of the second mechanism and the friction mechanism is arranged in parallel to the first spring mechanism. The first spring mechanism includes at least one combination of two springs arranged in series with each other. The two springs have a different spring constant or a different maximum angular stroke. Thus, a spring constant of the first spring mechanism changes at a predetermined torsional angle whereby a torque capacity of the flywheel is greatly increased.