Rod scraper
US6047970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/322
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rod scraper for hydraulic cylinders and the like is disclosed which includes an elastomeric ring member having an inner surface defining a central aperture adapted for receiving a rod for axial movement relative thereto, the inner surface including a scraper portion having an inner most circumferential lip positioned adjacent one end of the elastomeric seal member for scraping the rod, the elastomeric ring member further having a curved outer surface portion generally axially coextensive with the scraper portion, and a metallic backing ring affixed in overlaying relation to at least a substantial portion of the curved outer surface portion of the elastomeric ring member, the backing ring being resiliently biased against the curved outer surface portion to urge the lip of the elastomeric ring member against the rod and sufficiently flexible to allow some radial movement of the rod while maintaining the lip in circumferential contact with the rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.