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US3403550A
Expired / Lapsed
US
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Torque indicator
Assignee: Motors Liquidation Co
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Filing: 1966-11-15
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Granted: 1968-10-01
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Expires: 1986-11-15
Abstract
No abstract record available.
Inventors
- 👤 Cyril M Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
G; G01; G01L; G01L3/00; G01L3/02; G01L3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A TORQUE INDICATOR FOR A POWER SHAFT COMPRISING IN COMBINATION: A REFERENCE SHAFT CONCENTRIC WITH SAID POWER SHAFT AND SECURED THERETO FOR ROATATION THEREWITH, SAID POWER AND REFERENCE SHAFTS EACH HAVING SPLINES, A FIRST ELEMENT COAXIAL WITH SAID SHAFTS AND HAVING FIRST SPLINES AND SECOND HELICAL SPLINES MESHING INDIVIDUALLY WITH SAID POWER AND REFERENCE SHAFT SPLINES WHEREBY SAID FIRST ELEMENT IS AXIALLY MOVABLE IN RESPONSE TO THE WIND-UP BETWEEN HAVING THIRD HELICAL SPLINES SHAFTS, SAID FIRST ELEMENT HAVING THIRD HELICAL SPLINES WITH A HELIX ANGLE DIFFERENT FROM THE HELIX ANGLE OF SAID SECOND SPLINES, AND A SECOND, ANNULAR ELEMENT ROTATABLY MOUNTED COAXIALLY WITH A FIXED AXIALLY WITH RESPEFT TO SAID POWER SHAFT, SAID SECOND ELEMENT HAVING HELICAL SPLINES MESHING WITH THE THIRD HELICAL SPLINES ON SAID FIRST ELEMENT WHEREBY THE ANGULAR DISPLACEMENT OF SAID SECOND ELEMENT IS INDICATIVE OF THE WIND-UP BETWEEN SAID POWER AND REFERENCE SHAFTS, AND CONSEQUENTLY OF THE TORQUE CARRIED BY SAID POWER SHAFT.
Claim 2
Dependent Claim
157 words
A TORQUE INDICATOR FOR A POWER SHAFT COMPRISING IN COMBINATION: A REFERENCE SHAFT CONCENTRIC WITH SAID POWER SHAFT AND SECURED THERETO FOR ROATATION THEREWITH, SAID POWER AND REFERENCE SHAFTS EACH HAVING SPLINES, A FIRST ELEMENT COAXIAL WITH SAID SHAFTS AND HAVING FIRST SPLINES AND SECOND HELICAL SPLINES MESHING INDIVIDUALLY WITH SAID POWER AND REFERENCE SHAFT SPLINES WHEREBY SAID FIRST ELEMENT IS AXIALLY MOVABLE IN RESPONSE TO THE WIND-UP BETWEEN HAVING THIRD HELICAL SPLINES SHAFTS, SAID FIRST ELEMENT HAVING THIRD HELICAL SPLINES WITH A HELIX ANGLE DIFFERENT FROM THE HELIX ANGLE OF SAID SECOND SPLINES, AND A SECOND, ANNULAR ELEMENT ROTATABLY MOUNTED COAXIALLY WITH A FIXED AXIALLY WITH RESPEFT TO SAID POWER SHAFT, SAID SECOND ELEMENT HAVING HELICAL SPLINES MESHING WITH THE THIRD HELICAL SPLINES ON SAID FIRST ELEMENT WHEREBY THE ANGULAR DISPLACEMENT OF SAID SECOND ELEMENT IS INDICATIVE OF THE WIND-UP BETWEEN SAID POWER AND REFERENCE SHAFTS, AND CONSEQUENTLY OF THE TORQUE CARRIED BY SAID POWER SHAFT.
References Cited (Backward Citations)
US3339405A
Cited
US3253658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |