Belt tensioner for drill press
US9700979B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Sep 3, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/67
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drill press has variable speed drive via belts on stepped pulleys that transfer rotational force from the motor to the drill press spindle. Three stepped pulleys connected by two belts are provided in the example. A belt tension roller is bears against one of the belts to provide tension for effective power transfer from the motor to the spindle. The belt tension roller is adjustable along an arcuate slot in an anchor plate and is fastenable in position by an adjustment knob on the belt tension roller. The middle pulley is mounted to vary its position so that tension adjustments on one belt by the belt tension roller result in tension adjustments on the second belt as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.