US3312813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Period meter and logarithmic ratemeter
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1964-06-24
•
Granted: 1967-04-04
•
Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Vincent Charles Holmes
- 👤 Rowles John Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:38
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/14; G01; G01R; G01R23/00; G01R23/02; G01R23/10; G01T; G01T1/00; G01T1/30; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PERIOD METER COMPRISING DIGITAL SCALER MEANS FOR COUNTING INPUT PULSES OCCURRING IN EACH OF TWO SUCCESSIVE TIME-INTERVALS, MEANS FOR REPETITIVELY SUBTRACTING FROM THE NUMBER OF PULSES COUNTED IN EACH TIME-INTERVAL A FRACTION OF THE NUMBER REMAINING IN SAID SCALER MEANS AFTER EACH SUBTRACTION UNTIL THAT NUMBER HAS FALLEN TO A PREDETERMINED VALUE, AND MEANS FOR DETERMINING THE DIFFERENCE BETWEEN THE NUMBER OF SUBTRACTIONS REQUIRED TO REDUCE EACH OF THE COUNTED NUMBERS TO SAID PREDETERMINED NUMBER, SAID DIFFERENCE BEING PROPORTIONAL TO THE RECIPROCAL OF THE PERIOD OF THE SOURCE OF INPUT PULSES.
Claim 2
Dependent Claim
92 words
A PERIOD METER COMPRISING DIGITAL SCALER MEANS FOR COUNTING INPUT PULSES OCCURRING IN EACH OF TWO SUCCESSIVE TIME-INTERVALS, MEANS FOR REPETITIVELY SUBTRACTING FROM THE NUMBER OF PULSES COUNTED IN EACH TIME-INTERVAL A FRACTION OF THE NUMBER REMAINING IN SAID SCALER MEANS AFTER EACH SUBTRACTION UNTIL THAT NUMBER HAS FALLEN TO A PREDETERMINED VALUE, AND MEANS FOR DETERMINING THE DIFFERENCE BETWEEN THE NUMBER OF SUBTRACTIONS REQUIRED TO REDUCE EACH OF THE COUNTED NUMBERS TO SAID PREDETERMINED NUMBER, SAID DIFFERENCE BEING PROPORTIONAL TO THE RECIPROCAL OF THE PERIOD OF THE SOURCE OF INPUT PULSES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |