US3243973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible gear couplings
Assignee: Drafto Corp
•
Filing: 1963-01-30
•
Granted: 1966-04-05
•
Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 John B Kraeling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:48
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/18; F16D3/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A FLEXIBLE COUPLING FOR CONNECTING THE ADJACENT ENDS OF TWO SHAFTS CONSISTING OF AN UNINTERRUPTED METAL HUB FOR EACH SHAFT, AN EXTERNAL GEAR ON EACH HUB, AN UNINTERRUPTED MEATL SLEEVE HAVING AN INTERNAL GEAR WITH THE SAME NUMBER OF TEETH AS EACH EXTERNAL GEAR TO INTERMESH WITH THE TEETH OF EACH HUB GEAR WHEN TELESCOPE THEREOVER, THE TEETH OF AT LEAST ONE HUB GEAR HAVING THE SHAPE THAT FOLLOWS A HYPERBOLIC CURVE TO PROVIDE CLEARANCE BETWEEN THE INTERMESHED TEETH AT THE TOP AND BOTTOM OF THE ANGLE OF DEVIATION BETWEEN THE AXIS OF SAID ONE HUB AND THE AXIS OF SAID SLEEVE TO PERMIT ROTATION WIHTOUT BINDING WITHIN A RANGE FROM ZERO DEGREES TO A PREDETERMINED MAXIMUM ANGLE, SAID UNINTERRUPTED SLEEVE BEING FLEXIBLE TO ASSUME A CONTINUOUSLY CHANGING OVAL SHAPE TO PROVIDE INCREASED TOOTH CONTACT WITH THE HYPERBOLIC SHAPED EXTERNAL GEAR TEETH WHILE TRANSMITTING THE LOAD THROUGH THE TEETH WHEN SAID ONE HUB IS DISPOSED AT AN ANGLE OF DEVIATION.
Claim 2
Dependent Claim
160 words
A FLEXIBLE COUPLING FOR CONNECTING THE ADJACENT ENDS OF TWO SHAFTS CONSISTING OF AN UNINTERRUPTED METAL HUB FOR EACH SHAFT, AN EXTERNAL GEAR ON EACH HUB, AN UNINTERRUPTED MEATL SLEEVE HAVING AN INTERNAL GEAR WITH THE SAME NUMBER OF TEETH AS EACH EXTERNAL GEAR TO INTERMESH WITH THE TEETH OF EACH HUB GEAR WHEN TELESCOPE THEREOVER, THE TEETH OF AT LEAST ONE HUB GEAR HAVING THE SHAPE THAT FOLLOWS A HYPERBOLIC CURVE TO PROVIDE CLEARANCE BETWEEN THE INTERMESHED TEETH AT THE TOP AND BOTTOM OF THE ANGLE OF DEVIATION BETWEEN THE AXIS OF SAID ONE HUB AND THE AXIS OF SAID SLEEVE TO PERMIT ROTATION WIHTOUT BINDING WITHIN A RANGE FROM ZERO DEGREES TO A PREDETERMINED MAXIMUM ANGLE, SAID UNINTERRUPTED SLEEVE BEING FLEXIBLE TO ASSUME A CONTINUOUSLY CHANGING OVAL SHAPE TO PROVIDE INCREASED TOOTH CONTACT WITH THE HYPERBOLIC SHAPED EXTERNAL GEAR TEETH WHILE TRANSMITTING THE LOAD THROUGH THE TEETH WHEN SAID ONE HUB IS DISPOSED AT AN ANGLE OF DEVIATION.
References Cited (Backward Citations)
US1942782A
Cited
GB377761A
Cited
US2035171A
Cited
US2332068A
Cited
US2687025A
Cited
US2841966A
Cited
US2906106A
Cited
US2922294A
Cited
US2924954A
Cited
US2918809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |