Epicyclic change-speed mechanism and model clock incorporating s

Details Epicyclic change-speed mechanism and model clock incorporating s Epicyclic change-speed mechanism and model clock incorporating s

1993-02-03

1994-06-21

Wright, Dirk

Planetary gear transmission systems or components

Planet pinion is friction gear

475902, F16H 128

Patent

active

053224868

ABSTRACT:
The invention provides an epicyclic change-speed mechanism comprising a fixed outer ring having an inwardly directed running surface, a spider member mounted within the outer ring and rotatable about an axis concentric with the axis of the outer ring, the spider member having a hollow output shaft concentric with said outer ring, an input shaft concentric with the outer ring, and at least one planet wheel contained within an aperture in the spider member, the or each planet wheel being in driven engagement with the input shaft and in rolling engagement with the running surface of outer ring.
The invention also provides a model clock incorporating the change-speed mechanism, the face of the clock being formed from interfitting pieces of a constructional toy.

REFERENCES:
patent: 1701723 (1929-02-01), Lyons
patent: 2966070 (1960-12-01), Wise
patent: 3254546 (1966-06-01), Nasvytis
patent: 3267771 (1966-08-01), Bugg
patent: 4922790 (1990-05-01), Abbott et al.

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