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US 4,236,544 AGranted
Safety-enhancing walking stick
OwnerTakeshi Osakainventor
Life of this patent
Estimating the term…
Abstract
A safety-enhancing walking stick incorporating a light source which produces periodic flashes of high intensity light and is powered by self-contained batteries, the generation of the light flashes being controlled in accordance with the ambient illumination level.
Claims11
A safety-enhancing walking stick to provide a flashing light warning signal, comprising:
- a tubular casing having a least one portion which is translucent;
- a light source for providing flashes of light, disposed within said tubular casing adjacent to said portion of said tubular casing which is translucent;
- electronic circuit means disposed within said tubular casing, and coupled to said light source for periodically actuating said light source to provide said flashes of light;
- a battery disposed within said tubular casing for supplying power to said electronic circuit means;
- switch means for selectively connecting said battery to said electronic circuit means;
- and
- means for detecting the level of ambient light, said detecting means being coupled to said electronic circuit means for controlling said flashes of light produced by said light source.
4 more elements
A safety-enhancing walking stick to provide a flashing light warning signal, comprising:
- a tubular casing having at least one portion which is translucent;
- a light source for providing flashes of light, disposed within said tubular casing adjacent to said portion of said tubular casing which is translucent;
- electronic circuit means disposed within said tubular casing, and coupled to said light source for periodically actuating said light source to provide said flashes of light;
- and
- a battery disposed within said tubular casing for supplying power to said electronic circuit means;
- said light source comprising a xenon flash tube, and said electronic circuit means comprising a voltage step-up coil connected to electrodes of said xenon flash tube and a silicon controlled rectifier coupled to said voltage step-up coil for triggering said xenon flash tube.
3 more elements
Dependencies are inferred from the claim text.