Drive sprocket for a roller chain for material removal implement
US6415532B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/283
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sprocket is disclosed for driving a chain with a plurality of chain rollers. The sprocket may be used to drive a material removal chain of a trencher. The sprocket has various cut-aways or reliefs on each face thereof to more effectively clear particulate debris from beneath chain rollers during cutting or digging operations. The sprocket also has asymmetrical teeth designed to help minimize changes in pitch diameter due to debris entrained beneath chain rollers. Reducing changes in pitch diameter greatly reduces premature wear of the sprocket and its chain. Reducing changes in pitch diameter also greatly reduces the tendency for the chain to bind.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.