Variable speed switch and electric power tool with the variable speed switch mounted thereto
US9444307B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Feb 19, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable speed switch includes a switch main body portion which is accommodated in a housing of an electric power tool and mounted to the housing so as to be capable of relative movement, and a load sensor which is provided in the switch main body portion and capable of outputting an electric signal in proportion to the amount of distortion caused by a pressing force. The switch operating portion is mounted on the surface of the housing so as to be capable of relative displacement with respect to the housing and transmits a pressing force applied to the switch operating portion to the load sensor, with the maximum displacement amount of the switch operating portion being set to equal to or less than 5 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.