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. 27, 1976
Filed:
Oct. 11, 1974
Noboru Murakami, Nagoya, JA;
Koichiro Hirosawa, Kariya, JA;
Koichi Matsuo, Toyota, JA;
Kazuo Ohara, Toyota, JA;
Aisin Seiki Kabushiki Kaisha, , JA;
Abstract
A speed change gear system includes an input shaft, an output shaft and three planetary gear sets interposed therebetween. The first planetary gear set includes a first sun gear, a first planetary gear intermeshed with the first sun gear, a first ring gear enmeshed with the first planetary gear, and a first carrier rotatably supporting the first planetary gear while the second planetary gear set includes a second sun gear, a second planetary gear enmeshed with the second sun gear, a second ring gear intermeshed with the second planetary gear and drivingly connected to the first carrier, and a second carrier rotatably supporting the second planetary gear. The third planetary gear set similarly includes a third sun gear drivingly connected to the second sun gear, a third planetary gear interengaged with the third sun gear, a third ring gear enmeshed with the third planetary gear and drivingly connected to the second carrier and the first ring gear, and a third carrier rotatably supporting the third planetary gear and drivingly connected to the output shaft. A first clutch is provided for engaging or disengaging the input shaft with the first ring gear, the second carrier, and the third ring gear, and a second clutch is similarly provided for engaging or disengaging the input shaft with the first carrier and the second ring gear while a third clutch is additionally provided for engaging or disengaging the input shaft with the first sun gear. A first brake is also provided for fixedly securing the first sun gear relative to the gear casing while a second brake is similarly provided for fixedly securing the first ring gear, the second carrier, and the third ring gear to the casing, and a third brake is also provided for fixedly securing the second and third sun gears to the casing.