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:
Mar. 27, 2007
Filed:
Jan. 28, 2005
Keiji Matsueda, Shimonoseki, JP;
Keita Tanaka, Shimonoseki, JP;
Keiji Matsueda, Shimonoseki, JP;
Keita Tanaka, Shimonoseki, JP;
Shimano Inc., Osaka, JP;
Abstract
A bicycle drive unit comprises a frame main unit, first and second cover members, a rear hub, a rear gear shift apparatus, an electric driving mechanism and a power supply unit. The frame main unit diverges from a front end portion toward first and second rear end portions with the front end portion movably coupled to a frame of a bicycle, and the first and second rear end portions coupled to the rear hub. The first and second cover members are coupled to transverse outer surfaces of the frame main unit such that a first space is formed between the first cover member and the frame main unit and a second space is formed between the second cover member and the frame main unit. The electric driving mechanism is disposed in the first space and linked to the rear gear shift apparatus.