Electrical circuit tester
US4293174A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 1978 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Sep 18, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/69
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical circuit tester for use in testing terminal blocks having protruding electrical connectors, the tester comprising a body made from an insulating material, the body having a plurality of circuit testing assemblies, each assembly including a chamber, each chamber including a chamber extension extending to the exterior of the body and capable of receiving the electrical connectors. Positioned within each chamber is a piston having a piston rod extending therefrom, the piston rod extending into the chamber extension. The chamber includes a piston retaining wall having an aperture through which the piston rod moves. When the piston rod is in its fully extended state, there is room in the chamber extension to receive the electrical connector. Positioned within the chamber is a conductive grommet and a resilient conductive spring which contacts the grommet and functions to urge the piston and piston rod to the fully extended position. Conductors extend from the grommets to the exterior of the tester, and may eventually be connected to an electronic apparatus for testing the circuits in the telephone terminal blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.