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US 4,374,623 AGranted
Light beam clock
OwnerJerome H. Simoninventor
Life of this patent
Estimating the term…
Abstract
A light beam clock including a clock drive motor including a first member rotatable at the speed of one revolution per hour and a second member rotatable at the speed of one-twelfth revolution per hour; light source means; a circumferential portion; a beam mechanism including a first optical device mounted with the first member for directing light from the light source means in a first radial beam to form a first spot of light representing minutes on the circumferential portion, and a second optical device mounted with the second member for directing light from the light source means in a second radial beam to form a second spot of light for representing hours on the circumferential portion.
Claims8
A light beam clock comprising:
- a clock drive motor including a first member rotatable at the speed of one revolution per hour and a second member rotatable at the speed of one-twelfth revolution per hour;
- light source means;
- a circumferential display portion;
- a beam mechanism including a first mirror mounted with said first member for directing light from the light source means in a first radial beam to form a first spot of light representing minutes on said circumferential display portion and a second mirror mounted with said second member for directing light from the light source means in a second radial beam to form a second spot of light representing hours on said same circumferential display portion.
1 more element
A light beam clock comprising:
- a clock drive motor including a first member rotatable at the speed of one revolution per hour and a second member rotatable at the speed of one-twelfth revolution per hour;
- light source means;
- a circumferential display portion;
- a beam mechanism including a first optical device mounted with said first member for directing light from the light source means in a first radial beam to form a first spot of light representing minutes on said circumferential display portion and a second optical device mounted with said second member for directing light from the light source means in a second radial beam to form a second spot of light representing hours on said same circumferential display portion;
- each said optical device including a cylindrical reflector with a gap for escape of light;
- said light source means including an elongate lamp and said cylindrical reflectors being disposed on it.
3 more elements
A light beam clock comprising:
- a clock drive motor including a first member rotatable at the speed of one revolution per hour and a second member rotatable at the speed of one-twelfth revolution per hour;
- light source means;
- a circumferential display portion;
- a beam mechanism including a first optical device mounted with said first member for directing light from the light source means in a first radial beam to form a first spot of light representing minutes on said circumferential display portion and a second optical device mounted with said second member for directing light from the light source means in a second radial beam to form a second spot of light representing hours on said same circumferential display portion;
- said light source means including a plurality of separate light sources, one associated with each said optical device.
2 more elements
A light beam clock comprising:
- a clock drive motor including a first member rotatable at the speed of one revolution per hour and a second member rotatable at the speed of one-twelfth revolution per hour;
- light source means;
- a circumferential display portion;
- a beam mechanism including a first optical device mounted with said first member for directing light from the light source means in a first radial beam to form a first spot of light representing minutes on said circumferential display portion and a second optical device mounted with said second member for directing light from the light source means in a second radial beam to form a second spot of light representing hours on said same circumferential display portion;
- each optical device including a lens for receiving the light axially and a light pipe for receiving the light from the lens and radiating it radially.
2 more elements
A light beam clock comprising:
- a clock drive motor including a first member rotatable at the speed of one revolution per hour and a second member rotatable a the speed of one-twelfth revolution per hour;
- light source means;
- a circumferential display portion;
- a beam mechanism including a first optical device mounted with said first member for directing light from the light source means in a first radial beam to form a first spot of light representing minutes on said circumferential display portion and a second optical device mounted with said second member for directing light from the light source means in a second radial beam to form a second spot of light representing hours on said same circumferential display portion;
- each optical device including a cylindrical reflector with a gap for escape of light, there being a lens disposed in said gap.
2 more elements
A light beam clock comprising:
- a clock drive motor including a first member rotatable at the speed of one revolution per hour and a second member rotatable at the speed of one-twelfth revolution per hour;
- light source means;
- a circumferential display portion;
- a beam mechanism including a first optical device mounted with said first member which has a first reflector and a first lens located at the open end of said first reflector for directing light from the light source means in a first radial beam to form a first spot of light representing minutes on said circumferential display portion and a second optical device mounted with said second member which has a second reflector and a second lens located at the open end of said second reflector for directing light from the light source means in a second radial beam to form a second spot of light representing hours on said same circumferential display portion.
1 more element
Dependencies are inferred from the claim text.