Transmission device to provide reciprocating and returning motio

Details Transmission device to provide reciprocating and returning motio Transmission device to provide reciprocating and returning motio

1997-02-07

1999-03-02

Shoop, Jr., William M.

Music

Instruments

Automatic

84 952, 84 941, 84 942, G10F 106

Patent

active

058774386

ABSTRACT:
A transmission device to provide reciprocating and returning motion, which comprises a music box, a doll, and a motion assembly with a rotative shaft; the doll is mounted on the rotative shaft; the lower end of the rotative shaft is furnished with a rotative gear to be engaged with a driven gear, which has a shaft hole to be mounted with a rotative shaft of a driving gear; the driven gear has a curved guide groove for receiving short shaft of the driving gear, which is engaged with a gear rack of a guide plate. When the motion assembly is pulled with a pull plate to move along the guide plate, the driving gear will be driven to turn with the gear rack of the guide plate; then, the driving gear will be driven to turn with the gear rack of the guide plate; simultaneously, the short shaft of the driving gear will move along the guide groove of the driven gear, and then the doll on the rotative shaft will move straight as a result of the motion assembly moving. After the short shaft of the driving gear reaches one end of the guide groove, the driven gear will turn at a given angle to drive the rotative gear under the doll to turn so as to have the doll returned at an angle of 180 degrees, and the doll will always face in a direction same as that of the motion thereof.

REFERENCES:
patent: 5430239 (1995-07-01), Chen
patent: 5459278 (1995-10-01), Hsu

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