Perpetual calendar wheel chart
OwnerSean Bartoninventor
Life of this patent
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Abstract
A perpetual calendar wheel chart for determining the calendar for a particular year past, present, or future is comprised of two wheel members adapted to rotate about a common center. The first wheel member has in its center indicia representing the tens and ones digits of the year and has around its circumference indicia representing the day of the month. The second wheel member atop the first wheel member is generally transparent and has in its center indicia representing the hundreds and thousands digits of the year for aligning with the ones and tens digits of the year indicia of the first member and has around its circumference twelve transparent windows representing the months of the year that align with the day of the month indicia of the first member to indicate the calendar for a particular year.
Claims15
A perpetual calendar wheel chart, for determining the calendar for a particular year, comprising:
- a first member and a second member, each of a generally circular shape, adapted to rotate about a common center;
- where
- the first member has a plurality of first indicia thereon representing the day of the month and has a plurality of second indicia thereon representing a first period of time, each first period of time being either a month, a year, a decade, a century, or a millennium;
- and
- the second member has a plurality of third indicia thereon representing a second period of time, each second period of time being either a month, a year, a decade, a century, or a millennium, for aligning the with the second indicia and has at least two transparent windows representing the months of the year for aligning with the first indicia.
Dependencies are inferred from the claim text.