Automatic calendar
AssigneeMotomu Aoki
InventorsMotomu Aoki, Akira Ishikawa
Life of this patent
Estimating the term…
Abstract
An automatic calendar is provided which permits a regular change in the display from the end of the month to the first day of the next month to be achieved without requiring adjustment over a prolonged period of time, by employing a unique arrangement of numerals providing a display of date. The calendar comprises a unit's day display member having an indication of numerals in the sequence of 0, 1, 1, 2, 3, 4, 5, 6, 7, 8 and 9 at an equal interval, and a tens' day display member having an indication of numerals in the sequence of 0, 1, 1, 2, 2 and 3 or a repeated sequence thereof.
Claims5
A calendar comprising a units display drum having a periphery and displaying a plurality of spaced numerals in the sequence 0,1,1,2,3,4,5,6,7,8, and 9 at equal intervals on the periphery of the units display drum, a tens display drum having a periphery and displaying a plurality of spaced numerals in the sequence 0, 1, 1, 2, 2, and 3 at equal intervals on the periphery of the tens display drum, a calendar main shaft for concentrically supporting the units display drum and the ten's display drum adjacent each other, support means for supporting said shaft, said support means having index means adjacent said drums for indicating a single numeral on each of said drums, stepping means coupling the units display drum to the tens display drum for advancing the tens display drum relative to the index means once when the numeral of the units display drum appearing at the index means changes from 9 to 0 once when the numeral of the units display drum appearing at the index means changes from 1 to 1, and rotating means for rotating the units display drum to move a numeral past the index means each day so as to display the days of a month in sequence.
Dependencies are inferred from the claim text.