US 6,318,879 B1Granted

Two-part flashlight controlled by rotation

OwnerYu-Hwei Huanginventor

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Abstract

A two-part flashlight controllable by rotation, it has a hollow cylindrical main body including a closed end and an opening, an internal thread is provided near the opening. An end cover has an external threaded portion to connect the internal thread of the main body; the end cover has a transparent cover, an LED and an internal spring. Except the LED and other main elements, a battery set and a controlling switch are placed in the space formed by the end cover and main body to render the battery set and controlling switch to mutually press contact in cooperation with the spring. The switch includes an insulation sleeve, a metallic stem like spring seat having an upper and a lower enlarged end is inserted into the insulation sleeve, the upper enlarged end is abutted on a second spring provided in an enlarged inner hole in the insulation sleeve, the lower enlarged end can abut against and separate from a metallic contact in the insulation sleeve. The main body and the end cover determine the length of the flashlight and make the internal elements convenient for assembling and resistive to damage by dropping.

Claims11

Dependent claims

A two-part flashlight controllable by rotation, said flashlight has a hollow cylindrical main body including a closed end on the bottom end and an opening on the upper end thereof, an internal thread is provided near said opening;

an end cover being also hollow is provided with an external threaded portion to connect with said internal thread of said cylindrical main body;
said end cover is provided with main elements including a transparent cover, an LED and a first internal spring;
in addition to said LED and other main elements, a battery set and a controlling switch are further placed in the hollow interior space formed by said end cover and cylindrical main body to render said battery set and controlling switch to press contact with each other in cooperation with said first spring provided in a lamp seat;
said controlling switch includes an insulation sleeve, a metallic stem like spring seat provided with an upper enlarged end and a lower enlarged end is inserted into said insulation sleeve, said upper enlarged end of said stem like spring seat is abutted against a second spring provided in an enlarged inner hole in said insulation sleeve, said lower enlarged end is adapted to abutting against a metallic contact in said insulation sleeve, and is adapted to separating from said metallic contact.

1 more element

Dependencies are inferred from the claim text.