Bicycle chain rings
US11460099B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2020 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Jun 8, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M9/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bicycle chain ring, including an inner edge fully circumscribing both an opening and an axis of rotation; an inner surface extending between the inner edge and an outer edge where a plurality of chain ring teeth emanate; and a plurality of ramps disposed about the inner surface, wherein at least one of the plurality of ramps has a lifting surface configured to concurrently engage at least one link of a bicycle chain at two or more distinct pivot points along the length of the chain link to initiate stable lift of the bicycle chain without assistance from any of the plurality of chain ring teeth; wherein the lifting surface has a first end proximate the inner edge and a second end proximate the outer edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.