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US3864552A
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US
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Speedclock
Assignee: Individual
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Filing: 1973-03-15
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Granted: 1975-02-04
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Expires: 1993-03-15
Abstract
Abstract A speedclock includes means for generating a repetitive train of electrical pulses, and means coupled thereto for counting a given number of the pulses during successive incremental time periods. The given number of pulses are displayed as a predetermined increase in distance equal to a constant speed rate multiplied by the sum of the incremental time periods.
Inventors
- 👤 Melvin Richard Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:49
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/64; H03K3/66; H03K3/70; G; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10; G01P1/103; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/489
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
184 words
An odometer and speedclock combination comprising: an odometer for measuring an actual distance of travel; means for generating a repetitive train of electric pulses; means coupled to said generating means for counting a given number of said pulses during successive incremental time periods, said number of pulses during each incremental time period being preselected to represent a predetermined increase in a distance equal to a constant speed rate multiplied by the sum of said incremental time periods; means positioned adjacent said odometer and coupled to the output of said counting means for displaying a count of said pulses as a desired distance of travel; a pulse eliminating circuit for selectively eliminating a number of input pulses per cycle of input pulses into said counting means; said input pulses into said counting means being proportional to an increase in a distance equal to a constant speed rate multiplied by the sum of said incremental time periods; and wherein said odometer and said display means are positioned such that said desired distance of travel can be readily compared to said actual distance measured by said odometer.
Claim 2
Dependent Claim
184 words
An odometer and speedclock combination comprising: an odometer for measuring an actual distance of travel; means for generating a repetitive train of electric pulses; means coupled to said generating means for counting a given number of said pulses during successive incremental time periods, said number of pulses during each incremental time period being preselected to represent a predetermined increase in a distance equal to a constant speed rate multiplied by the sum of said incremental time periods; means positioned adjacent said odometer and coupled to the output of said counting means for displaying a count of said pulses as a desired distance of travel; a pulse eliminating circuit for selectively eliminating a number of input pulses per cycle of input pulses into said counting means; said input pulses into said counting means being proportional to an increase in a distance equal to a constant speed rate multiplied by the sum of said incremental time periods; and wherein said odometer and said display means are positioned such that said desired distance of travel can be readily compared to said actual distance measured by said odometer.
Claim 3
Dependent Claim
16 words
The combination recited in claim 1 wherein said pulse train generating means comprises a crystal oscillator.
Claim 4
Dependent Claim
19 words
The combination recited in claim 2 further comprising binary counting means coupled to the output of said crystal oscillator.
Claim 5
Dependent Claim
23 words
The combination recited in claim 3 further comprising a dividing and pulse shaping circuit coupled to the output of said binary counting means.
Claim 6
Dependent Claim
70 words
The combination recited in claim 4 wherein said counting and displaying means comprises means for selecting a count of a number of pulses as said increase in a distance equal to a constant speed rate multiplied by the sum of said incremental time periods, said counting and displaying means being selectively coupled to the output of one of said dividing and pulse shaping circuit means and said pulse eliminating means.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |