Perpetual calendar |
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| 申请号 | JP9902889 | 申请日 | 1989-04-20 | 公开(公告)号 | JPH0243595A | 公开(公告)日 | 1990-02-14 |
| 申请人 | Ralph H Hoyeck; | 发明人 | RARUFU HABAA HOIETSUKU; | ||||
| 摘要 | PURPOSE: To provide an advanced and improved perpetual calendar by constituting it by two parallel parts one of which indicates weekdays and the other one of which indicates one or more months of the year and making one unit freely movable relatively to the other unit. CONSTITUTION: This calendar is composed of at least two units 1 and 2 and 3, one unit 1 is freely movable relatively to the other units 2 and 3, one unit 1 indicates the weekdays and the other units 2 and 3 indicate the year or the month displayed on a flat piece body, on a continuous belt and on a circular disk or a ring. That is, it is composed of a piece body 1 for indicating many continuous weekdays equal to the number of days in a large month in a calendar system to be an object plus 12. Also, it is constituted of the piece body 2 for indicating the month of January and the month of February relatively set in fixed relation to the weekdays and ten columns 3 for indicating the remaining ten months of the year set parallelly to each other at the mutually same fixed value relating to the weekdays. Thus, this perpetual calendar to be actually used and easily manufactured is prepared. COPYRIGHT: (C)1990,JPO |
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