US4058714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively operated, clock-controlled repetitive calculator
Assignee: Individual
•
Filing: 1976-06-10
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Granted: 1977-11-15
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Expires: 1996-06-10
Abstract
Abstract A portable calculator which performs selected arithmetic computations including addition, subtraction, multiplication and division includes a selectively operative clock circuit. When activated, the clock circuit repetitively performs the preselected mathematical computation at predetermined intervals to obtain a total quantity that is a function of a specific time period.
Inventors
- 👤 Arthur L. Mostow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:18
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/02; G06F15/025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A device for performing multiple repetitive mathematical calculations including in combination: a calculator including means to enter a desired number; storage means to store a number representing a total, means for displaying said number representing the total, means for combining said entered number with said number representing a total stored in said storage means to develop a new number representing a total, and a clock circuit coupled to said calculator and operative at predetermined intervals to operate said combining means, said clock circuit including an oscillator selectively operative to repetitively develop pulses at a predetermined repetition rate and switch means coupled to said oscillator and said combining means operative in response to each of said pulses to switch and operate said combining means to combine said entered number with said number representing a total to develop a new number representing a new total.
Claim 2
Independent Claim
143 words
A device for performing multiple repetitive mathematical calculations including in combination: a calculator including means to enter a desired number; storage means to store a number representing a total, means for displaying said number representing the total, means for combining said entered number with said number representing a total stored in said storage means to develop a new number representing a total, and a clock circuit coupled to said calculator and operative at predetermined intervals to operate said combining means, said clock circuit including an oscillator selectively operative to repetitively develop pulses at a predetermined repetition rate and switch means coupled to said oscillator and said combining means operative in response to each of said pulses to switch and operate said combining means to combine said entered number with said number representing a total to develop a new number representing a new total.
Claim 3
Dependent Claim
14 words
The device of claim 1 wherein said switch means is a solid state switch.
Claim 4
Dependent Claim
14 words
The device of claim 2 wherein said solid state switch is a transistor switch.
Claim 5
Dependent Claim
20 words
The device of claim 4 wherein said combining means includes a switch, said switch means being coupled to said switch.
Claim 6
Dependent Claim
16 words
The device of claim 4 wherein said switch and switch means are connected to be parallel.
Claim 7
Dependent Claim
37 words
The device of claim 5 wherein said switch means is a transistor having base, emitter and collector electrodes, said base electrode being coupled to said oscillator and said emitter and collector electrodes being coupled to said switch.
Claim 8
Dependent Claim
67 words
In a calculator including means to perform selected mathematical computations and display the quantity obtained by such performance, the improvement comprising; a clock circuit selectively operative to repetitively effect said performance by the performing means of said selected mathematical computations at predetermined time intervals and the display of a quantity obtained by such performance per specified time, said selected mathematical computations including addition, subtraction, multiplication, and division.
Claim 9
Dependent Claim
67 words
In a calculator including means to perform selected mathematical computations and display the quantity obtained by such performance, the improvement comprising; a clock circuit selectively operative to repetitively effect said performance by the performing means of said selected mathematical computations at predetermined time intervals and the display of a quantity obtained by such performance per specified time, said selected mathematical computations including addition, subtraction, multiplication, and division.
Claim 10
Dependent Claim
132 words
In a calculator having a keyboard through which selected quantities are entered and mathematical functions are selected, means for performing said mathematical functions, actuatable means for rendering the performing means operative to perform one of the selected functions and means for storing and displaying the entered quantities and computational results obtained by said performance of the performing means; the improvement including selectively operable clock means for generating timing pulses, and switch means connecting the clock means to the calculator in bypass relation to the actuatable means for rendering the performing means repetitively operative in response to said pulses to perform said selected functions with respect to a selected quantity initially entered, whereby the cumulative computational results corresponding to the repetitive operation of the performing means are displayed as a function of time.
Claim 11
Dependent Claim
132 words
In a calculator having a keyboard through which selected quantities are entered and mathematical functions are selected, means for performing said mathematical functions, actuatable means for rendering the performing means operative to perform one of the selected functions and means for storing and displaying the entered quantities and computational results obtained by said performance of the performing means; the improvement including selectively operable clock means for generating timing pulses, and switch means connecting the clock means to the calculator in bypass relation to the actuatable means for rendering the performing means repetitively operative in response to said pulses to perform said selected functions with respect to a selected quantity initially entered, whereby the cumulative computational results corresponding to the repetitive operation of the performing means are displayed as a function of time.
References Cited (Backward Citations)
US3788058A
Cited
US3860806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |