# US 2013/0155666 A1 · Flashlight Zooming Structure

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2013/0155666 A1
- Document ID: US20130155666A1
- Status: Published application
- Kind: A1
- Application number: 13/326,420
- Filed: 2011-12-15
- Published: 2013-06-20
- Earliest claimed: 2011-12-15
- Assignees: Shih-Hao Wang
- Inventors: Hsueh-Chu Yeh
- Web page: https://patentgrep.com/patent/US20130155666A1

## CPC

- F21L 4/027: {the light sources being a LED}
- F21V 14/065: {in portable lighting devices}
- F21Y 2115/10: Light-emitting diodes [LED]
- F21L: LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A flashlight zooming structure includes a main body and a zooming assembly screwed on one end of a neck of the main body. In the zooming assembly, a transparent lamp cup centrally formed with a convex lens is received in a cup seat, the cup seat is screwed into a cap, and the lugs on the outer periphery of the cup seat are received in the corresponding peripheral notches of a receiving section extending from one end of a middle annular element. To illuminate a distant or nearby target, the zooming assembly mounted around the neck of the main body is rotated in the desired direction so that the light emitted by a lighting unit at one end of the neck of the main body is projected outward through the transparent lamp cup in the zooming assembly as a convergent or divergent light beam.

## Claims

### Claim 1

A flashlight zooming structure, comprising a main body and a zooming assembly threadedly connected to an end of a neck of the main body, the flashlight zooming structure being characterized in that:
the zooming assembly comprises a cap, a cup seat, a lamp cup, and a middle annular element, the cap having a predetermined inner section formed as a threaded section, the cap having an open end peripherally provided with a plurality of inwardly extending projections, the cup seat having an outer periphery provided with at least two lugs, each said lug having an outer side formed as a threaded portion threadedly connected with the threaded section of the cap, the cup seat having a downwardly tapering inner periphery defining a relatively large opening and a relatively small opening, the relatively large opening being peripherally provided with a plurality of spaced and inwardly extending fasteners, the lamp cup being transparent and centrally formed with a convex lens, the lamp cup being received in the cup seat and limited in position by the fasteners of the cup seat, the middle annular element having an end extended with a receiving section, the receiving section being peripherally provided with notches of a predetermined depth, the lugs on the outer periphery of the cup seat being inserted in and movable along the notches, the middle annular element having an inner periphery provided with threads threadedly connected with an externally threaded portion of the neck of the main body, the middle annular element having an opposite end concavely provided with an annular groove, the projections of the cap being engaged with the annular groove to limit the cap and the middle annular element in position;
wherein the zooming assembly is operated by rotating the cap in a desired direction so that the cup seat in the zooming assembly is moved upward or downward along the notches and the lamp cup received in the cup seat is moved along with the cup seat, thus allowing light emitted by a lighting unit at the end of the neck of the main body to project outward through the transparent lamp cup in the zooming assembly as a divergent or convergent light beam.

### Claim 2 (depends on 1)

The flashlight zooming structure of claim 1, wherein the convex lens of the transparent lamp cup is outwardly convex, and the lamp cup has a lower end provided with a concave region, so as for the light emitted by the lighting unit at the end of the neck of the main body to be guided by the concave region and projected outward through the convex lens as the divergent or convergent light beam.