Focusing-type flashlight structure
US8147088B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 4, 2009 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Jan 21, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21L4/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A focusing-type flashlight structure includes a hollow cylinder body for accommodating the power supply component and screwed with an exterior cap having the switch device at the rear side and having a buckle channel and a protrusion stop ring and forming the diameter expansion section; a light emitting device positioned between the buckle channel and the protrusion stop ring of the hollow cylinder body; a light transparent cover for sealing the front side of the hollow cylinder body and having a protrusion hook for clasping with the buckle channel to achieve the positioning; and a zooming device including a hollow tube having a first, second, and third ring section with converged diameters from the front to the rear in order, and a lens disposed between the first ring section of the hollow tube, and a light opening cover to achieve the positioning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.