The present invention provides a flashlight having two switches, an on-off switch and an intermittent switch. The on-off switch allows the flashlight to be placed in either the on position or the off position. The intermittent switch allows the flashlight to be in the on position only when the switch...http://www.google.fr/patents/US6474833?utm_source=gb-gplus-shareBrevet US6474833 - Dual switch flashlight