Patent · US Active

Pedelec bottom-bracket drive unit

US11834128B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

SRAM, LLC · US

Inventors

Dietmar Greven · Dormagen, DE
KAI VENHOFF · Rhede, DE
Axel Hemsing · Goldkronach, DE
Peter Thiele · Stocken, DE

Key dates

Filing date	Dec 19, 2019
Grant date	Dec 5, 2023
Priority date	—
Expiry date	Apr 13, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB62M6/55
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A pedelec bottom bracket drive unit includes a rigid drive housing and a tolerance compensation sheet-metal spring which is arranged to stand substantially in a vertical plane. The tolerance compensation sheet-metal spring includes at least one fixing point at a housing side and at least one mounting point for fastening the tolerance-compensating sheet-metal spring to a pedelec-frame-side drive mount. The at least one fixing point has a fixing point traverse axis. The tolerance compensation sheet-metal spring is fixed to the rigid drive housing at the at least one fixing point at the housing side. The at least one mounting point has a mounting point traverse axis. The at least one mounting point is arranged offset with respect to a next adjacent fixing point of the at least one fixing point as viewed from the fixing point traverse axis and from the mounting point traverse axis.

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