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US 5,473,969 AGranted
Transmission mechanism for music box display devices
OwnerCorrina Cheninventor
Life of this patent
Estimating the term…
Abstract
A transmission mechanism including a seesaw balanced in a box inside a decorative housing and coupled to the power output shaft of a music box inside the housing by a crankshaft, and two tappet rods coupled to two opposite ends of the seesaw to support a respective ornament outside the housing, wherein the tappet rods with the ornaments are alternatively reciprocated when the music box is operated to produce certain tunes and to simultaneously rotate the crankshaft in oscillating the seesaw back and forth.
Claims3
A transmission mechanism for a music box ornament comprising:
- a crankshaft coupled to the power output shaft of a music box mounted inside a case within a decorative housing;
- a seesaw balanced inside said case within said decorative housing, said seesaw being made of a hollow rectangular shape having two opposite short sides and two opposite long sides defining its border, two opposite upright walls at said two opposite short sides, one upright wall having a rectangular sliding slot;
- and
- a pair of tappet rods, each having a top end extended out of said decorative housing to support a respective ornament and a bottom end coupled to one upright wall of said seesaw, said tappet rods being reciprocated vertically and alternatively by said seesaw when said crankshaft is rotated by the power output shaft of said music box to oscillate said seesaw back and forth.
1 more element
Dependencies are inferred from the claim text.