Horology: time measuring systems or devices – With calendar indicator – Movable ring or disk
Patent
1997-12-09
1999-09-21
Roskoski, Bernard
Horology: time measuring systems or devices
With calendar indicator
Movable ring or disk
368 35, G04B 1920
Patent
active
059562943
ABSTRACT:
A multi-functional timepiece comprises a base, a wheel train mounted on the base for rotation, a cam member rotationally driven by the wheel train about a rotational center, and a rotary member mounted to undergo angular displacement in opposite directions. A display member is integrally connected to the rotary member for angular displacement therewith to display time or date information. An interconnecting member interconnects the cam member to the rotary member such that rotational motion of the cam member effects angular displacement of the rotary member in the opposite directions.
REFERENCES:
patent: 2056089 (1936-09-01), Boggs
patent: 3721083 (1973-03-01), Jauch
patent: 3911667 (1975-10-01), Komiyama
patent: 4271493 (1981-06-01), Tamaru et al.
Shibuya Norio
Takahashi Takashi
Takizawa Katsuyoshi
Roskoski Bernard
Seiko Instruments Inc.
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