Feed rate controller for thickness sanding machine
US5720648A · kind A · utility
14Cited by
14References
12Claims
0Family size
Inventors
Key dates
| Filing date | Aug 3, 1995 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Aug 3, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B7/28
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drum sanding machine having a vertically-adjustable sanding drum mounted over a conveyor, where the sanding drum is direct-coupled to an AC drive motor. The conveyor includes an endless loop belt connected to a variable speed DC motor, and a feedback circuit is connected to monitor the AC drive motor current and to develop a feedback signal to slow the DC motor when the AC motor drive current exceeds a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.