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US 6,229,768 B1Granted
Trick action type clock
AssigneeRhythm Watch Co., Ltd.
InventorsHiroyuki Nakazawa, Hiroshi Ito
Life of this patent
Estimating the term…
Abstract
A trick action type clock, wherein a dial plate which is arranged in front of ornaments is made of left and right side dial plates mating along a line passing through a center of rotation of the hands. A planetary gear mechanism actuates the left and right side dial plates so as to make them rotate and revolve around the center of rotation of the hands to produce an opening and closing motion. Therefore, the dial plate made of the two mating parts performs an opening and closing motion which produces a strong impression due to the surprising dynamic change.
Claims4
A trick action type clock comprising:
- long and short hands;
- a movement for moving said hands;
- a dial plate formed by a plurality of parts mating along a line passing through a center of rotation of said hands and arranged to be openable from and closeable to said center of rotation;
- and
- a drive means for driving said parts to make them rotate and revolve around said center of rotation to produce an opening and closing motion.
2 more elements
Dependencies are inferred from the claim text.