Technique for detecting twisted motion of electric working machine
US11607789B2 · kind B2 · utility
0Cited by
3References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2020 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Jan 31, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/221
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric working machine in one aspect of the present disclosure includes an output shaft, a motor, a housing, an acceleration detector, a twisted motion detector, a reference level changer, and a motor controller. The acceleration detector detects an acceleration of the housing in a circumferential direction of the output shaft. The twisted motion detector detects a twisted motion of the housing based on a reference level and the acceleration detected. The reference level determines that the housing is twisted. The reference level changer changes the reference level based on a rotating motion of the output shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.