Concrete cutting chain with sealed joints
US6138658A · kind A · utility
21Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/917
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A saw chain for cutting aggregate material has sealing members to seal the pivotal connection between the center drive links and the rivets to prevent entry of contaminates into the bearing surfaces. In one arrangement, O-rings are mounted in grooves of the tie straps with the O-ring being compressively forced against the center drive link. The O-ring prevents entry of contaminants into the bearing surface between the bore of the center drive link and the rivet. In another arrangement spring type cup washers fit in a groove of the tie straps and the cup washers are biased against the center drive link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.