Foldable portable lamp
OwnerJacob M Thomasinventor
Life of this patent
Estimating the term…
Abstract
A portable lamp comprises a central body, a boom arm, flat tripod stand, and a light unit. The central body is extendable along its vertical axis to a predetermined length. The boom arm is of adjustable length and is rotatably fixed to the upper end of the central body with a positively locking elbow joint, including a ratchet and pawl. The lower end of the central body is fixed with a foldable locking flat tripod stand adapted to hold and provide mobility to the portable lamp. Flat tripod stand includes a spring-biased latch and detents that hold legs in a folded or a down position. The central body, the boom arm, the tripod stand and the light unit are configured to provide up to twelve degrees of freedom jointly.
Claims9
A portable lamp comprising:
- a vertical support;
- a boom arm;
- a light unit supported from the boom arm;
- and
- a positive locking joint connecting the vertical support and the boom arm;
- said locking joint selectively allowing elevation and depression of said boom arm;
- said positive locking joint comprising
- a ratchet;
- said ratchet having teeth;
- and
- a pawl;
- having an engaged position and a released position;
- wherein in the engaged position said pawl locks on the said teeth to hold the boom arm at specific desired angle while permitting said elevation;
- and
- wherein in the released position said pawl unlocks from the said teeth;
- and
- said locking joint selectively allowing depression of said boom arm requiring said pawl be in said released position.
A method of operating a portable lamp comprising:
- selectively operating a positive locking joint allowing elevation and depression of a boom arm;
- said positive locking joint connecting a vertical support and the boom arm;
- and
- said positive locking joint comprising a ratchet and pawl mechanism;
- supporting a light unit from the boom arm;
- said selectively operating step comprising first engaging said pawl by locking the pawl on teeth on said ratchet and then elevating the boom arm by applying an upwards force to the boom arm without operating a release on said positive locking joint;
- and
- said selectively operating step further comprising first releasing said pawl by unlocking the pawl from said teeth on said ratchet, and then depressing the boom arm;
- said releasing step comprising operating the release on said positive locking joint.
Dependencies are inferred from the claim text.