System and method for kickback detection based on blade speed in a power tool
US11571831B2 · kind B2 · utility
0Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Sep 20, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B5/38
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of detecting and mitigating kickback in a saw includes identification of a running average speed (RPM) of a saw blade, the speed at a given time sample relative to the running average speed, the percentage change in speed from one speed sample to the previous speed sample, and the percentage change in average speed based on the current speed of the saw blade. If the identified speed profile from the samples indicates a kickback is imminent, then the saw identifies an imminent kickback event and removes power from the saw motor to mitigate kickback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.