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:
Apr. 06, 2021
Filed:
Feb. 25, 2020
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Aisin Aw Co., Ltd., Anjo, JP;
Aisin Aw Industries Co., Ltd., Echizen, JP;
Masayuki Ishibashi, Numazu, JP;
Hideyuki Nishida, Sunto-gun, JP;
Isamu Hachisuwa, Nagoya, JP;
Yoichi Oi, Anjo, JP;
Takuya Yoshikawa, Fukui, JP;
Ryosuke Otsuka, Sabae, JP;
Katsunori Tanaka, Fukui, JP;
Tomoyuki Hiramoto, Sabae, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
AISIN AW CO., LTD., Anjo, JP;
AISIN AW INDUSTRIES CO., LTD., Echizen, JP;
Abstract
A torsional vibration damper whose vibration damping performance will not be reduced in a high speed range. In the torsional vibration damper, a planetary gear is oscillated within a first oscillating range when a torsional torque is smaller than a reference torque, and within a second oscillating range when the torsional torque is greater than the reference torque. Each backlash between the pinion gear and at least one of a sun gear and a ring gear within the second oscillating range is individually wider than each backlash between the pinion gear and the sun gear and each backlash between the pinion gear and the ring gear within the first oscillating range.