US4005571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elapsed time reminder with conversion of calendar days into elapsed time
Assignee: Individual
•
Filing: 1975-11-06
•
Granted: 1977-02-01
•
Expires: 1995-11-06
Abstract
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.
Inventors
- 👤 Emanuel Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
G; G04; G04G; G04G13/00; G04G13/02; G04G13/025; G04G11/00; G04G9/00; G04G9/02; G04G9/04; G04G9/045
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
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.
Claim 2
Dependent Claim
79 words
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.
Claim 3
Dependent Claim
48 words
In the reminder of claim 1, said timer including a digital counter and means for entering said elapsed time into said counter as a multi-digit number, and said first and second means being manually operated for entry of the present time and future time on a calendar basis.
Claim 4
Dependent Claim
50 words
In the reminder of claim 1, said electronic means including a digital counter and means for entering the elapsed time interval as a multi-digit number therein, and said electronic timer including an electronic clock for successively diminishing the multi-digit number corresponding to the elapsed time until the selected future time.
Claim 5
Dependent Claim
65 words
In the electronic reminder of claim 1, said first and second means being individually manually operated to enter the present time and future time on a calendar basis including months and days, said electronic means deriving the time interval therebetween as a digital number of days, and said electronic timer counting the elapsed time between the present and selected future time as a digital number.
Claim 6
Dependent Claim
22 words
In the electronic reminder of claim 1, said indicator means continually displaying the time interval remaining until completion of the elapsed time.
Claim 7
Dependent Claim
26 words
In the electronic reminder of claim 1, said indicator means providing a continual digital count-down of the time interval remaining until completion of the elapsed time.
Claim 8
Dependent Claim
75 words
In the electronic reminder of claim 1, said first and second means enabling manual entry of the present time and future time on a calendar basis, including month and day, said electronic means automatically determining the number of elapsed days in digital number form in the interval between the two times, said timer means successively counting the days and with said electronic means, energizing said indicator means to signal the completion of said elapsed time.
Claim 9
Dependent Claim
19 words
In the electronic reminder of claim 1, manual means for correcting said electronic means for variations during leap year.
Claim 10
Dependent Claim
96 words
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.
Claim 11
Dependent Claim
96 words
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.
Claim 12
Dependent Claim
72 words
In the reminder of claim 9, said calculator means including counters for days and months, a control counter, and a logic circuit energized by said clock, said logic circuit being sequentially energized by said control counter and by said manual entry means to enter an accumulated digital number into said register corresponding to the sum of the number of days in each month between the present time and the selected future time.
Claim 13
Dependent Claim
55 words
In the reminder of claim 10, said logic circuit including means for adjustably presetting said counter for days to a count capacity that differs for each month according to the number of days in that month, and manual entry means for correcting the capacity of said counter for the month of February at leap year.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |