Patent US3104315A successfully refreshed from Google Patents.
US3104315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer for functions such as true airspeed
Assignee: Giannini Controls Corp
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Filing: 1959-09-08
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Granted: 1963-09-17
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Expires: 1979-09-08
Abstract
No abstract record available.
Inventors
- 👤 Howard Robert Charles
- 👤 Arthur W Conow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:58
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A SYSTEM FOR COMPUTING THE VALUE OF A QUANTITY WHICH DEPENDS UPON A FUNCTION OF THE RATIO OF TWO INPUT VARIABLES, SAID SYSTEM COMPRISING IN COMBINATION MEANS RESPONSIVE TO SAID INPUT VARIABLES FOR DEVELOPING TWO ELECTRICAL VOLTAGE SIGNALS THE RATIO OF WHICH REPRESENTS THE DIFFERENCE BETWEEN SAID FUNCTION AND A CONSTANT VALUE, MEANS ACTING TO DIVIDE ONE OF SAID VOLTAGE SIGNALS INTO AT LEAST TWO SIGNAL PORTIONS HAVING A FIXED RATIO SUCH THAT ONE OF SAID SIGNAL PORTIONS REPRESENTS SAID CONTANT VALUE, DRIVABLE MENAS FOR DERIVING FROM ANOTHER OF THE SIGNAL PORTIONS A VARIABLE FRACTION THEREOF, DIFFERENTIAL CIRCUIT MEANS FOR COMPARING THE OTHER ELECTRICAL VOLTAGE SIGNAL WITH THE SUM OF SAID VARIABLE FRACTION AND SAID ONE SIGNAL PORTION, SAID DRIVABLE MEANS BEING DRIVABLE TO VARY THE VALUE OF SAID FRACTION AND THEREBY TO VARY THE VALUE OF SAID SUM WITHOUT ALTERING THE VALUE OF SAID ONE SIGNAL PORTION, SERVO MEANS FOR DRIVING SAID DRIVABLE MEANS TO MAINTAIN BALANCED CONDITION OF THE DIFFERENTIAL CIRCUIT MEANS, AND OUTPUT MEANS DRIVEN WITH SAID DRIVABLE MEANS AND REPRESENTING THE VALUE OF SAID QUANTITY.
Claim 2
Independent Claim
179 words
A SYSTEM FOR COMPUTING THE VALUE OF A QUANTITY WHICH DEPENDS UPON A FUNCTION OF THE RATIO OF TWO INPUT VARIABLES, SAID SYSTEM COMPRISING IN COMBINATION MEANS RESPONSIVE TO SAID INPUT VARIABLES FOR DEVELOPING TWO ELECTRICAL VOLTAGE SIGNALS THE RATIO OF WHICH REPRESENTS THE DIFFERENCE BETWEEN SAID FUNCTION AND A CONSTANT VALUE, MEANS ACTING TO DIVIDE ONE OF SAID VOLTAGE SIGNALS INTO AT LEAST TWO SIGNAL PORTIONS HAVING A FIXED RATIO SUCH THAT ONE OF SAID SIGNAL PORTIONS REPRESENTS SAID CONTANT VALUE, DRIVABLE MENAS FOR DERIVING FROM ANOTHER OF THE SIGNAL PORTIONS A VARIABLE FRACTION THEREOF, DIFFERENTIAL CIRCUIT MEANS FOR COMPARING THE OTHER ELECTRICAL VOLTAGE SIGNAL WITH THE SUM OF SAID VARIABLE FRACTION AND SAID ONE SIGNAL PORTION, SAID DRIVABLE MEANS BEING DRIVABLE TO VARY THE VALUE OF SAID FRACTION AND THEREBY TO VARY THE VALUE OF SAID SUM WITHOUT ALTERING THE VALUE OF SAID ONE SIGNAL PORTION, SERVO MEANS FOR DRIVING SAID DRIVABLE MEANS TO MAINTAIN BALANCED CONDITION OF THE DIFFERENTIAL CIRCUIT MEANS, AND OUTPUT MEANS DRIVEN WITH SAID DRIVABLE MEANS AND REPRESENTING THE VALUE OF SAID QUANTITY.
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |