Lamp socket
US5823806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R33/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp socket for supporting an HID lamp includes a hollow casing having a lamp mounting opening defined at one end and the opposite end closed; an electrode carrier member disposed inside the casing; a center electrode disposedon the electrode carrier member at a location coaxial with an axis perpendicular to a plane of the lamp mounting opening and engageable with a center contact point in a mouthpiece of a lamp to be received in the lamp socket; a peripheral electrode disposed on the electrode carrier member at a location offset laterally from the center electrode and also from the axis for engagement a peripheral contact point in the mouthpiece of the lamp; an electrode shielding member disposed within the casing for movement between projected and retracted positions; and a coil spring for biasing the electrode shielding member to the projected position and operable to permit the electrode shielding member to move towards the retracted position against a biasing force thereof in response to insertion of the lamp mouthpiece into the lamp mounting opening. The electrode shielding member when in the retracted position permits the center and peripheral electrodes to be electrically…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.