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US 4,272,039 AGranted
Electronic hang glider hook-up warning system
OwnerThomas C. Hollingsworthinventor
Life of this patent
Estimating the term…
Abstract
An electronic warning system that alerts a pilot of light-weight foot-launched aircraft that the required pre-launch physical hook-up of pilot-to-aircraft has not been accomplished.
Claims3
A hang-glider safety hook-up warning system with pilot awareness means for indication to the pilot that the pilot harness has not been hooked or connected to the glider, which comprises:
- a. touch sensitive switch means, having two operable positions, disposed on the glider control bar at a location so as to be actuated by the pilot's hand during take-off or launch, said touch sensitive switch means being in one operable position when in contact with the pilot's hand and in the second operable position when not in contact with the pilot's hand;
- b. switch means disposed at the glider suspension loop or glider attachment point, said glider attachment point switch means having two operable positions;
- c. receptacle means disposed at the pilot harness attachment link or carabiner into which the said glider attachment point switch means can be inserted at a time when the pilot harness attachment link is hooked to or secured to the glider attachment point;
- d. magnet means comprising a magnet associated with said receptacle means, said receptacle means receiving the said glider attachment point switch means, said glider attachment points switch means being in one operable position under the force of said magnet when inserted in said receptacle means, and being in the second operable position when said glider attachment points switch means is not inserted in said receptacle means;
- e. awareness means disposed on said glider;
- f. circuit means, including a power supply with said circuit means connecting said glider attachment point switch means to said touch sensitive switch means so that said awareness means provides an indication of the pilot being unhooked from or unattached to the glider will only occur when the pilot is holding the glider in launch position.
3 more elements
Dependencies are inferred from the claim text.