Telescopic rod for a desk lamp
US12209738B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 8, 2024 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Feb 8, 2044 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47B2220/0077
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A telescopic rod includes a moving rod having a longitudinal guide groove along its outer surface, first and second friction pads at a first end, and a threaded ring at a second opposite end. A positioning rod includes at a top end a limiting with a limiting cylinder with a limiting protrusion projecting from an inside surface configured to be received in the guide groove when the moving rod is slideably installed inside the positioning rod. First and second openings are provided in the first end of the moving rod for receiving first and second installation blocks of the friction pads. The top end of the positioning rod includes two positioning holes configured to receive two clamping block of the limiting cylinder. A threaded installation ring is provided at a bottom end of the positioning rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.