Variable light beam flashlight and recharging unit

TL;DR: In this paper, an improved mechanism for selectively varying the light beam intensity and area was proposed, which enabled the movement of the bulb forwardly and rearwardly relative to the light reflector by rotation of the head of the flashlight.

Abstract: The flashlight of the invention includes an improved mechanism for selectively varying the light beam intensity and area. The mechanism includes a cam member, and abutting head and outer switch housing shoulders, which enable movement of the bulb forwardly and rearwardly relative to the light reflector by rotation of the head of the flashlight, so as to selectively vary the intensity and area of the light beam, while preventing axial movement of the head and light reflector. The flashlight includes structural means for recharging its battery; and a battery charger/flashlight holder is designed to retain the flashlight and charge the batteries when the flashlight is stored therein. A shield in the lens prevents damage from heat emitted by a high intensity halogen bulb.