Crimp length gauge for ceramic metal halide electrodes
US5879215A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Feb 11, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/247
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for assembling a ceramic metal halide high intensity discharge (HID) lamp is disclosed. The apparatus includes a base adapted to receive a ceramic arc tube body, a movable gauge arm having a first portion contacting an end surface of the arc tube body, an electrode holder for supporting an electrode in contact with a second portion of the gauge arm, and a crimper for securing a stop to the electrode at a position determined by the extent of movement of the gauge arm. The apparatus permits stops to be secured to electrodes, either simultaneously or sequentially, thereby correcting for a length deviation of the arc tube body. As a result, half of the required correction is made on each electrode. Since both electrodes are set to the same insertion length, an arc gap is inherently centered in the arc tube body during assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.