Trigger potentiometer
US10491152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2018 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | May 2, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric hand tool that includes an electric motor, an electrical position indicator for operation by a user, and a control unit for controlling power delivery from a power supply to an electric motor, based signals received from the electrical position indicator. The electrical position sensor may be coupled to a trigger operable by a user, and the electrical position sensor may be configured to detect the relative position of the trigger and to only operate in the middle of its possible range. The control unit may determine if the signals received from the electrical position indicator are out of a defined range. If the signals received from the electrical position indicator are out of a defined range, the control unit may register a fault, such as a fully open and/or fully short fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.