US3220266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compass stabilizing system
Assignee: Unisys Corp
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Filing: 1959-09-03
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Granted: 1965-11-30
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Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Harry R Jurman
- 👤 Eugene S Rocks
- 👤 Nazaro A Simonelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
387 words
A COMPASS STABILIZING SYSTEM FOR MANEUVERABLE CRAFT INCLUDING A COMPASS HAVING A DIRECTED GYROSCOPIC ELEMENT; A GYRO VERTICAL HAVING MUTUALLY PERPENDICULAR, NORMALLY HORIZONTAL AXES, FIRST MEANS PROVIDING AN OUTPUT ONLY WHEN THE RELATIVE TILT OF THE GYRO VERTICAL FROM A LEVEL CONDITION ABOUT ONE OF ITS AXES EXCEEDS A PREDETERMINED ANGLE INCLUDING A PICK-OFF CONNECTED TO THE GYRO VERTICAL; SECOND MEANS PROVIDING AN OUTPUT ONLY WHEN THE RELATIVE TILT OF THE GYRO VERTICAL FROM A LEVEL CONDITION ABOUT THE OTHER OF ITS AXES EXCEEDS A PREDETERMINED ANGLE INCLUDING A PICK-OFF CONNECTED TO THE GYRO VERTICAL; A PAIR OF GIMBALS UNIVERSALLY SUPPORTING THE DIRECTED COMPASS ELEMENT WITH RELATION TO THE CRAFT, ONE OF THE GIMBALS HAVING AN AXIS CORRESPONDING TO ONE OF THE AXES OF THE GYRO VERTICAL AND THE OTHER OF THE GIMBALS HAVING AN AXIS CORRESPONDING TO THE OTHER OF THE AXES OF THE GYRO VERTICAL; FIRST GRAVITY RESPONSIVE MEANS CARRIED BY ONE OF THE GIMBALS PROVIDING AN OUTPUT IN ACCORDANCE WITH EFFECTIVE TILT OF THE GIMBALS FROM A LEVEL CONDITION THROUGH A TILT RANGE TO A TILT ANGLE SUBSTANTIALLY CORRESPONDING TO THE PREDETERMINED TILT ANGLE OF THE GYRO VERTICAL ABOUT THE ONE OF ITS AXES; SECOND GRAVITY RESPONSIVE MEANS CARRIED BY THE OTHER OF THE GIMBALS PROVIDING AN OUTPUT IN ACCORDANCE WITH EFFECTIVE TILT OF THE GIMBALS FROM A LEVEL CONDITION THROUGH A TILT RANGE TO A TILT ANGLE SUBSTANTIALLY CORRESPONDING TO THE PREDETERMINED TILT ANGLE OF THE GYRO VERTICAL ABOUT THE OTHER OF ITS AXES; A FIRST STABILIZING SERVO LOOP INCLUDING A MOTOR OPERATIVELY CONNECTED TO THE ONE GIMBAL RESPONSIVE TO THE OUTPUT OF THE FIRST GRAVITY RESPONSIVE MEANS IN THE TILT RANGE OF THE GYRO VERTICAL BELOW THE FIRST PICK-OFF OUTPUT LEVEL AND RESPONSIVE TO THE OUTPUTS OF THE FIRST GRAVITY RESPONSIVE MEANS AND THE FIRST OUTPUT PROVIDING MEANS IN THE TILT RANGE OF THE GYRO VERTICAL ABOVE THE FIRST PICK-OFF OUTPUT LEVEL; AND A SECOND STABILIZING SERVO LOOP INCLUDING A MOTOR OPERATIVELY CONNECTED TO THE OTHER GIMBAL RESPONSIVE TO THE OUTPUT OF THE RELATIVE GRAVITY RESPONSIVE MEANS IN THE TILT RANGE OF THE GYRO VERTICAL BELOW THE SECOND PICK-OFF OUTPUT LEVEL AND RESPONSIVE TO THE OUTPUTS OF THE SECOND GRAVITY RESPONSIVE MEANS AND THE SECOND OUTPUT PROVIDING MEANS IN THE TILT RANGE OF THE GYRO VERTICAL ABOVE THE SECOND PICKOFF OUTPUT LEVEL.
Claim 2
Dependent Claim
387 words
A COMPASS STABILIZING SYSTEM FOR MANEUVERABLE CRAFT INCLUDING A COMPASS HAVING A DIRECTED GYROSCOPIC ELEMENT; A GYRO VERTICAL HAVING MUTUALLY PERPENDICULAR, NORMALLY HORIZONTAL AXES, FIRST MEANS PROVIDING AN OUTPUT ONLY WHEN THE RELATIVE TILT OF THE GYRO VERTICAL FROM A LEVEL CONDITION ABOUT ONE OF ITS AXES EXCEEDS A PREDETERMINED ANGLE INCLUDING A PICK-OFF CONNECTED TO THE GYRO VERTICAL; SECOND MEANS PROVIDING AN OUTPUT ONLY WHEN THE RELATIVE TILT OF THE GYRO VERTICAL FROM A LEVEL CONDITION ABOUT THE OTHER OF ITS AXES EXCEEDS A PREDETERMINED ANGLE INCLUDING A PICK-OFF CONNECTED TO THE GYRO VERTICAL; A PAIR OF GIMBALS UNIVERSALLY SUPPORTING THE DIRECTED COMPASS ELEMENT WITH RELATION TO THE CRAFT, ONE OF THE GIMBALS HAVING AN AXIS CORRESPONDING TO ONE OF THE AXES OF THE GYRO VERTICAL AND THE OTHER OF THE GIMBALS HAVING AN AXIS CORRESPONDING TO THE OTHER OF THE AXES OF THE GYRO VERTICAL; FIRST GRAVITY RESPONSIVE MEANS CARRIED BY ONE OF THE GIMBALS PROVIDING AN OUTPUT IN ACCORDANCE WITH EFFECTIVE TILT OF THE GIMBALS FROM A LEVEL CONDITION THROUGH A TILT RANGE TO A TILT ANGLE SUBSTANTIALLY CORRESPONDING TO THE PREDETERMINED TILT ANGLE OF THE GYRO VERTICAL ABOUT THE ONE OF ITS AXES; SECOND GRAVITY RESPONSIVE MEANS CARRIED BY THE OTHER OF THE GIMBALS PROVIDING AN OUTPUT IN ACCORDANCE WITH EFFECTIVE TILT OF THE GIMBALS FROM A LEVEL CONDITION THROUGH A TILT RANGE TO A TILT ANGLE SUBSTANTIALLY CORRESPONDING TO THE PREDETERMINED TILT ANGLE OF THE GYRO VERTICAL ABOUT THE OTHER OF ITS AXES; A FIRST STABILIZING SERVO LOOP INCLUDING A MOTOR OPERATIVELY CONNECTED TO THE ONE GIMBAL RESPONSIVE TO THE OUTPUT OF THE FIRST GRAVITY RESPONSIVE MEANS IN THE TILT RANGE OF THE GYRO VERTICAL BELOW THE FIRST PICK-OFF OUTPUT LEVEL AND RESPONSIVE TO THE OUTPUTS OF THE FIRST GRAVITY RESPONSIVE MEANS AND THE FIRST OUTPUT PROVIDING MEANS IN THE TILT RANGE OF THE GYRO VERTICAL ABOVE THE FIRST PICK-OFF OUTPUT LEVEL; AND A SECOND STABILIZING SERVO LOOP INCLUDING A MOTOR OPERATIVELY CONNECTED TO THE OTHER GIMBAL RESPONSIVE TO THE OUTPUT OF THE RELATIVE GRAVITY RESPONSIVE MEANS IN THE TILT RANGE OF THE GYRO VERTICAL BELOW THE SECOND PICK-OFF OUTPUT LEVEL AND RESPONSIVE TO THE OUTPUTS OF THE SECOND GRAVITY RESPONSIVE MEANS AND THE SECOND OUTPUT PROVIDING MEANS IN THE TILT RANGE OF THE GYRO VERTICAL ABOVE THE SECOND PICKOFF OUTPUT LEVEL.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |