Moon glow illuminated watch calendar
OwnerKevin Kouchinventor
Life of this patent
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Abstract
A long-lasting illuminated calendar designed for analog watches. A calendar date disk with see-through numbered indicia corresponding to sequential calendar days is mounted above a main plate which moves relative to the calendar disk at the rate of one date indicia per day. The illumination is provided by a sealed glass tube with a luminescent coating inside which is permanently activated, preferably by a limited quantity of tritium gas. The sealed glass tube is positioned in a recess formed in the watch plate. The light emitted from the gas tube projects through the transparent or translucent indicia in the calendar date disk.
Claims6
A gas light device for illuminating a calendar date number on a watch, the device comprising:
- a sealed glass tube having a luminescent coating on the inside of the sealed glass tube;
- a quantity of gas inside the sealed glass tube which gas is capable of illuminating the luminescent coating to generate a light emanating from the sealed glass tube;
- a watch plate within a watch casing, the watch plate having an opening therein to receive the sealed glass tube positioned therein;
- a calendar disk having a series of calendar date indicia positioned around the disk, the indicia being capable of illumination by the light emanating from the sealed glass tube, the calendar disk capable of being positioned over the watch plate and the calendar disk and watch plate being capable of relative movement at the rate of one calendar date indicia per day so that each day one of the calendar date indicia indicating the current date is positioned over the sealed glass tube and is the indicia is illuminated by the light emanating from the sealed glass tube to be externally visible for reading the calendar date.
Dependencies are inferred from the claim text.