US3160406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle suspensions
Assignee: Armstrong Patents Co Ltd
•
Filing: 1963-01-08
•
Granted: 1964-12-08
•
Expires: 1983-01-08
Abstract
No abstract record available.
Inventors
- 👤 Dickinson Ronald Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:50
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; B; B60; B60G; B60G15/00; B60G15/02; B60G15/06; B60G15/062; B60G15/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
IN A VEHICLE SUSPENSION UNIT COMPRISING A TELESCOPIC HYDRAULIC SHOCK ABSORBER OF GENERALLY CYLINDRICAL CONFIGURATION AND INCLUDING A PISTON COMPONENT TELESCOPICALLY ENGAGED IN AND HAVING ONE END PROJECTING FROM A CYLINDER COMPONENT, AND A COIL SPRING ENGAGED ON SAID SHOCK ABSOBER FOR COMPRESSION AND EXTENSION THEREWITH, THE IMPROVEMENT COMPRISING A FIRST SPRING ABUTMENT AT THE PROJECTING END OF THE PISTON COMPONENT, A SECOND SPRING ABUTMENT INTERMEDIATE THE ENDS OF THE CYLINDER COMPONENT, SAID COIL SPRING BEING IN COMPRESSION AND COAXIALLY EMBRACING THE EXTERIOR OF SAID SHOCK ABSORBER BETWEEN SAID ABUTMENTS, SAID SPRING COMPRISING END TURNS EACH OF A DIAMETER CLOSELY CONFORMING WITH THE CYLINDRICAL PERIPHERY OF SAID CYLINDER COMPONENT AND OF A REDUCED DIAMETER RELATIVE TO THE REMAINING SPRING TURNS, SAID SPRING HAVING A MAXIMUM DIAMETER AT ITS CENTRAL REGION AND AT REGIONS ON EACH SIDE OF SAID CENTRAL REGION, AND A PLURALITY OF FURTHER REDUCED DIAMETER TURNS AT LEAST ADJACENT THE END TURN OF SAID SPRING AT SAID PROJECTING END OF SAID PISTON COMPONENT, SAID FURTHER REDUCED DIAMETER TURNS EACH
Claim 2
Dependent Claim
171 words
IN A VEHICLE SUSPENSION UNIT COMPRISING A TELESCOPIC HYDRAULIC SHOCK ABSORBER OF GENERALLY CYLINDRICAL CONFIGURATION AND INCLUDING A PISTON COMPONENT TELESCOPICALLY ENGAGED IN AND HAVING ONE END PROJECTING FROM A CYLINDER COMPONENT, AND A COIL SPRING ENGAGED ON SAID SHOCK ABSOBER FOR COMPRESSION AND EXTENSION THEREWITH, THE IMPROVEMENT COMPRISING A FIRST SPRING ABUTMENT AT THE PROJECTING END OF THE PISTON COMPONENT, A SECOND SPRING ABUTMENT INTERMEDIATE THE ENDS OF THE CYLINDER COMPONENT, SAID COIL SPRING BEING IN COMPRESSION AND COAXIALLY EMBRACING THE EXTERIOR OF SAID SHOCK ABSORBER BETWEEN SAID ABUTMENTS, SAID SPRING COMPRISING END TURNS EACH OF A DIAMETER CLOSELY CONFORMING WITH THE CYLINDRICAL PERIPHERY OF SAID CYLINDER COMPONENT AND OF A REDUCED DIAMETER RELATIVE TO THE REMAINING SPRING TURNS, SAID SPRING HAVING A MAXIMUM DIAMETER AT ITS CENTRAL REGION AND AT REGIONS ON EACH SIDE OF SAID CENTRAL REGION, AND A PLURALITY OF FURTHER REDUCED DIAMETER TURNS AT LEAST ADJACENT THE END TURN OF SAID SPRING AT SAID PROJECTING END OF SAID PISTON COMPONENT, SAID FURTHER REDUCED DIAMETER TURNS EACH
References Cited (Backward Citations)
US1154996A
Cited
US2509803A
Cited
US2731257A
Cited
FR1069215A
Cited
US2889144A
Cited
US2896938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |