Patent US3266325A successfully refreshed from Google Patents.
US3266325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Schaffer gyroscopic apparatus
Assignee: —
•
Filing: —
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Granted: 1966-08-16
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:19
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; 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
182 words
A THREE AXIS GYROSCOPIC STABLE REFERENCE APPARATUS FOR NAVIGABLE CRAFT COMPRISING, (1) A FIRST GIMBAL PIVOTABLY SUPPORTED ON SAID CRAFT FOR MOVEMENT ABOUT THE ROLL AXIS OF SAID CRAFT, (2) A SECOND GIMBAL PIVOTALLY SUPPORTED ON SAID FIRST GIMBAL FOR MOVEMENT ABOUT THE PITCH AXIS OF SAID CRAFT, (3) A PAIR OF GYROSCOPES PIVOTABLY MOUNTED ON SAID SECOND GIMBAL, (4) PICK-OFF MEANS CONNECTED TO SAID PAIR OF GYROSCOPES FOR PROVIDING ATTITUDE INFORMATION WITH RESPECT TO SAID CRAFT ABOUT THREE MUTUALLY PERPENDICULAR REFERENCES AXES, (5) AT LEAST ONE OF SAID GYROSCOPES OF SAID PAIR BEING A TWO DEGREE OF FREEDOM GYROSCOPE, (6) AN ELEMENT PIVOTABLY MOUNTED ON SAID SECOND GIMBAL, (7) MEANS COUPLED TO SAID ELEMENT FOR STABILIZING SAID ELEMENT IN AZIMUTH, (8) AND MEANS INCLUDING A PAIR OF ACCELERATION RESPONSIVE MEANS MOUNTED ON SAID ELEMENT AND HAVING THEIR SENSITIVE AXES ORTHOGONALLY DISPOSED WITH RESPECT TO EACH OTHER IN A NORMALLY HORIZONTAL PLANE FOR PROVIDING SIGNALS REPRESENTATIVE OF THE TILT OF SAID AZIMUTH STABILIZED ELEMENT IN HORIZONTAL, MUTUALLY ORTHOGONAL DIRECTIONS RESPECTIVELY FOR STABILIZING SAID FIRST AND SECOND GIMBALS IN ROLL AND PITCH RESPECTIVELY,
Claim 2
Dependent Claim
182 words
A THREE AXIS GYROSCOPIC STABLE REFERENCE APPARATUS FOR NAVIGABLE CRAFT COMPRISING, (1) A FIRST GIMBAL PIVOTABLY SUPPORTED ON SAID CRAFT FOR MOVEMENT ABOUT THE ROLL AXIS OF SAID CRAFT, (2) A SECOND GIMBAL PIVOTALLY SUPPORTED ON SAID FIRST GIMBAL FOR MOVEMENT ABOUT THE PITCH AXIS OF SAID CRAFT, (3) A PAIR OF GYROSCOPES PIVOTABLY MOUNTED ON SAID SECOND GIMBAL, (4) PICK-OFF MEANS CONNECTED TO SAID PAIR OF GYROSCOPES FOR PROVIDING ATTITUDE INFORMATION WITH RESPECT TO SAID CRAFT ABOUT THREE MUTUALLY PERPENDICULAR REFERENCES AXES, (5) AT LEAST ONE OF SAID GYROSCOPES OF SAID PAIR BEING A TWO DEGREE OF FREEDOM GYROSCOPE, (6) AN ELEMENT PIVOTABLY MOUNTED ON SAID SECOND GIMBAL, (7) MEANS COUPLED TO SAID ELEMENT FOR STABILIZING SAID ELEMENT IN AZIMUTH, (8) AND MEANS INCLUDING A PAIR OF ACCELERATION RESPONSIVE MEANS MOUNTED ON SAID ELEMENT AND HAVING THEIR SENSITIVE AXES ORTHOGONALLY DISPOSED WITH RESPECT TO EACH OTHER IN A NORMALLY HORIZONTAL PLANE FOR PROVIDING SIGNALS REPRESENTATIVE OF THE TILT OF SAID AZIMUTH STABILIZED ELEMENT IN HORIZONTAL, MUTUALLY ORTHOGONAL DIRECTIONS RESPECTIVELY FOR STABILIZING SAID FIRST AND SECOND GIMBALS IN ROLL AND PITCH RESPECTIVELY,
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |