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US 4,005,571 AGranted
Elapsed time reminder with conversion of calendar days into elapsed time
OwnerEmanuel Wolffinventor
Life of this patent
Estimating the term…
Abstract
An elapsed time display and reminder device that is manually adjustable by the user to select a time in the future that may be many days in advance of the present, and to provide a calibrated countdown display of the progressively diminishing time interval until the selected future time is reached. In a preferred device, the user enters the present time and the future time in calendar form as a month and day of the month, and the device automatically converts this future calendar date less the present date, into an elapsed time interval as a number of days.
Claims11
An electronic reminder comprising:
- first means for manually entering the present time,
- second means for manually entering a selected future time desired,
- electronic means for obtaining the elapsed time interval between the present and selected future time,
- an electronic timer associated with said electronic means for counting the elapsed time between the present and selected future times as it expires,
- and indicator means responsive to said electronic means and timer means for signaling the completion of said elapsed time.
2 more elements
An electronic reminder comprising:
- means for manually entering an adjustable selected future time desired,
- means for calculating the adjustable elapsed time between said adjustable selected future time and the present time and deriving a adjustable digital number corresponding to said elapsed time,
- means including a digital register combined with said means for calculating the elapsed time for storing and displaying said adjustable digital number,
- an electronic clock,
- and electronic means including said register and clock for progressively diminishing said adjustable digital number in proportion to the passage of time until said elapsed time has been completed.
2 more elements
Dependencies are inferred from the claim text.