Multimeter
US8981759B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2013 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Nov 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multimeter includes: a rotary switch which selects a measurement function; a common terminal hole into which a connector of a test probe is inserted; selection terminal holes into which the connector of the test probe is selectively inserted; and shutter plates which selectively open the selection terminal holes. The rotary switch includes convex portions. The shutter plate includes a hole corresponding to the common terminal hole so that the shutter plate rotates by using the center of the common terminal hole as the rotation axis and includes a concave portion engageable with the convex portion so that the shutter plate rotates to open the selection terminal holes by the movement of the convex portion. The shutter plate includes a concave portion engageable with the convex portion so that the shutter plate opens and closes the selection terminal hole by the movement of the convex portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.