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:
May. 18, 2004
Filed:
Apr. 30, 2003
Nobutaka Chiba, Yokohama, JP;
Toshikazu Nanbu, Kanagawa, JP;
Makoto Kano, Yokohama, JP;
Jun Watanabe, Yokahama, JP;
Kenshi Ushijima, Kanagawa, JP;
Masahiro Omata, Kanagawa, JP;
Minoru Oota, Kanagawa, JP;
Hiroo Ueda, Kanagawa, JP;
Manabu Wakuta, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A rotary assembly for traction drives, including a plurality of rolling elements having a rotation axis and traction contact surfaces around the rotation axis and associating with each other to transmit a motive power between the rolling elements via a traction oil film formed between the traction contact surfaces, in which at least one of the traction contact surfaces has a microstructure with irregularities which sizes are larger than a thickness of the traction oil film. The process for the traction contact surface is also disclosed.