Clock movement power transmission union

Details Clock movement power transmission union Clock movement power transmission union

1996-01-31

1997-09-30

Roskoski, Bernard

Horology: time measuring systems or devices

Displays or display device details

Dial or hand

368 80, G04B 1904

Patent

active

056732392

ABSTRACT:
An improved clock movement power transmission union is disclosed for saving space and providing flexibility of design options. It comprises: (a) a casing having main input and main output holes, wherein the main input and main output holes are disposed such that their fictitious axes intersect at a specific angle; (b) a main input shaft and a main output shaft received by the main input hole and the main output hole for rotating about their individual fictitious axes, respectively, so as to drive the hour, minute, and second hands independently. The main input shaft comprises a plurality of input shafts all rotatable about a common fictitious axis, and the main output shaft comprises an equal number of input shafts engageable with corresponding input shafts via a group of drive gear-driven gear combinations, respectively. With this design, the plurality of output shafts can receive rotational powers from the input shafts, respectively and independently of each other.

REFERENCES:
patent: 517594 (1894-04-01), Smith
patent: 3106817 (1963-10-01), Ducommun
patent: 5103434 (1992-04-01), Sullivan

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