Electro-mechanical trigger switch
US6803683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Oct 9, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/21
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An alignment device (10) for indicating alignment between two component parts, the first component part (12) having an arcuate track (14) with a track following member in the form of a ball bearing (28) to follow the track under the influence of gravity to seek an equilibrium position. The body having a signal input (18) and a signal output port (20) and the second component part comprising an alignment member axially mounted within the body in restraining engagement with the track following member (28) so as to be rotationally displaceable within the body in response to displacement of the member 28, whereby alignment between the alignment member and the input and output ports in response to displacement of the alignment member by the ball bearing, effects operation of an indicator means to provide an indication that such alignment between the alignment member and the alignment ports has been achieved.Further, there is provided a level indicator utilising such an alignment device, together with a power tool utilising such a level indicator to determine when such a tool is held in a horizontal or vertical plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.