EP 0397028 B1 19921104 - ASTRONOMICAL CLOCK, A VISIBLE PART OF WHICH SIMULATES THE MOVEMENT OF AN ASTRAL BODY
Title (en)
ASTRONOMICAL CLOCK, A VISIBLE PART OF WHICH SIMULATES THE MOVEMENT OF AN ASTRAL BODY
Publication
Application
Priority
CH 172089 A 19890508
Abstract (en)
[origin: EP0397028A1] The earth ring (8) carries the lunar disc (9) which pivots in a hollow of the surface (8a). At its outer periphery, it has a toothing (17) for driving by the final gear (15) of the step-by-step transmission gear train (15, 24, 12). The drive gear (12) is moved by one step per day from the day wheel. The pinion (20) of the lunar disc (9) is in engagement with the outer toothing (22) which is normally fixed but may be displaced by means of the correction device controlled by the rod (30) when it rotates in a predetermined direction. The same correction device also permits action on the transmission train (12, 14, 15, 17). The rod (30) is then driven in a direction opposite to the abovementioned direction, which displaces the reverser (36) and permits the correction of the position of the lunar disc (9) relative to the earth ring (8), the latter normally effecting one revolution on itself over twelve months and the lunar disc (9) effecting a complete revolution over approximately 29.5 days. <IMAGE>
IPC 1-7
IPC 8 full level
G04B 19/26 (2006.01)
CPC (source: EP US)
G04B 19/26 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0397028 A1 19901114; EP 0397028 B1 19921104; CH 677305 B5 19911115; CH 677305G A3 19910515; DE 69000423 D1 19921210; DE 69000423 T2 19930519; JP H0354496 A 19910308; US 5345429 A 19940906
DOCDB simple family (application)
EP 90108362 A 19900503; CH 172089 A 19890508; DE 69000423 T 19900503; JP 11700590 A 19900508; US 52169190 A 19900508