Patent · US Active

Bottom bracket unit for a bicycle

US9403577B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Markus Neubauer · Tauberbischofsheim, DE
Stefan Gluck · Schweinfurt, DE
Frank Benkert · Waigolshausen, DE

Key dates

Filing date	Apr 17, 2012
Grant date	Aug 2, 2016
Priority date	—
Expiry date	Feb 20, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S482/901
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A bottom bracket unit including a bottom bracket axle (1), at least one bearing (2, 3) that receives the bottom bracket axle (1) in a rotatable manner, and an optical detection unit (11), by which a rotational speed of the bottom bracket axle (1) can be detected. The optical detection unit (11) measures at least one signaling device (12) that is rotationally fixed to the bottom bracket axle (1). The aim of the invention is to provide a bottom bracket unit that can also detect the rotational direction of the bottom bracket axle in addition to the rotational speed of the axle. This is achieved in that the optical detection unit (11) has two optical sensors (17), with one of these sensors (17) providing a signal that is phase-shifted with respect to the other sensor (24) having a fixed phase difference, in particular with a phase difference of 90°.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.