Display device for calendar timepieces
AssigneeCitizen Watch Co., Ltd.
InventorsMinoru Watanabe, Munetaka Tamaru
Life of this patent
Estimating the term…
Abstract
A display device for calendar timepieces having a month display for the purpose of displaying the date indication in large size. To this end the device comprises a date dial and month dial, in which the month indication is displayed only at beginning of the month for informing the change of month. The month display may be performed by disclosing the month indication through an opening provided in the date dial through which the month indication is revealed or by utilizing a month indicating projection radially projected over the date dial.
Claims16
A display device for calendar timepieces capable of displaying a date and a month, comprising:
- calendar indicating dials including,
- a date dial having date indications thereon, said date dial rotating one step every 24 hours, and
- a month dial having month indications thereon, said month dial rotating one step when said date dial rotates between said date indication "31" and said date indication "1";
- window means disposed through said display device for displaying said date indications on said date dial and said month indications on said month dial;
- and
- means for exposing one of said month indications on said month dial through said window means for a short period of time during said month, said one of said month indications being hidden from view through said window means for the remaining period of time of said month.
A display device for calendar timepieces comprising:
- calendar indicating dials including a date dial having date indications and adapted to be rotated one step every 24 hours and a month dial having month indications and adapted to be rotated one step during the rotation of said date dial between the dial indications "31" and "1";
- window means for displaying indications on said date dial and said month dial;
- means for disclosing the month indication through said window means at a predetermined time, said date dial being positioned above the month dial, said means for disclosing the month indication including an opening provided in said date dial for revealing the month indication at a predetermined time.
A display means for a calendar timepiece, capable of displaying dates and months, comprising:
- day dial means having day indications thereon for displaying day information;
- month dial means having month indications thereon for displaying month information;
- means for rotating said day dial means and said month dial means;
- and
- window means disposed through an outer surface of said timepiece for permitting said day information and said month information to be displayed,
- said day dial means acting in synchronism with said month dial means such that said month information for one of said months is exposed through said window means for a period of time less than the duration of time of said one of said months, and
- said month information for said one of said months being hidden from view through said window means for the remaining duration of time of said one of said months.
Dependencies are inferred from the claim text.