Rod scraper
US8424150B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jun 11, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Feb 1, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/56
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved apparatus for cleaning linearly translating rods is described. Embodiments of the invention are suitable for use where a rod, such as a cleaning rod, is moved linearly through a stationary support, generally a cylindrical tube, such as a pneumatic cylinder, with bushings fixed inside the tube through which the rod slides. Preferred embodiments of the present invention allow the rod scraper to be attached or removed without disassembling the complete hydraulic cylinder rod apparatus. Preferred embodiments of the present invention also allow the rod scraper to float radially while its motion is constrained axially. This allows the invention to compensate for lateral displacement of a translating cylindrical cleaning rod due to normal working clearances between the cleaning rod and bushings or by bushing wear over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.