Inventive structure of spring driving musical movement...

Music – Instruments – Automatic

Reexamination Certificate

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Details

C084S095200, C084S094100, C084S094200, C084S096000

Reexamination Certificate

active

06960711

ABSTRACT:
An inventive structure of the reduction device of the spring driving musical movement comprises a musical movement base, a gear fixed base, a step spur gear, a bilateral gear and a friction unit; wherein the gear fixed base, formed from project plastic material, installs with a locating hole, two parallel concave grooves and a right-side bilateral gear installing groove thereon; and rivets with the musical movement base in a fixed position by the locating hole. After said step spur gear separately parallelizes in said parallel concave groove, said right-side bilateral gear installing groove and a left-side bilateral gear installing groove on the musical movement base were separately installed with a bilateral gear. And said friction unit locates on the musical movement base to make a worm thereon mutually and vertically engages with a left-side gear of the bilateral gear, to become a spring driving musical movement reduction device.

REFERENCES:
patent: 4557173 (1985-12-01), Isaka
patent: 5543577 (1996-08-01), Zhu et al.
patent: 5700963 (1997-12-01), Koelemeijer et al.
patent: 6323404 (2001-11-01), Hayashi

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