Patent US3554022A successfully refreshed from Google Patents.
US3554022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller testing stand for motor vehicles
Assignee: Sun Electric Nederland NV
•
Filing: 1968-11-12
•
Granted: 1971-01-12
•
Expires: 1988-11-12
Abstract
Abstract A ROLLER TESTING STAND FOR MOTOR VEHICLES COMPRISING A SYSTEM OF ROTATABLY SUPPORTED ROLLERS FOR SUPPORTING THE WHEELS OF THE VEHICLE TO BE TESTED AND HAVING AN ADJUSTABLE BRAKE, WHICH SUPPLIES A SIGNAL PROPORTIONAL TO THE BRAKING EFFORT, THE ROTATABLE ROLLERS BEING COUPLED TO RESPECTIVE TACHOMETERS FOR PRODUCING SIGNALS PROPORTIONAL TO THE VELOCITY OF THE ROLLERS, SAID VELOCITY SIGNALS BEING DIFFERENTIATED AND ADDED TO THE SIGNAL REPRESENTING THE BRAKE POWER TO OBTAIN AN OUTPUT SIGNAL REPRESENTING THE TOTAL PULL EXERTED BY THE VEHICLE WHEELS.
Inventors
- 👤 Herman R Geul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:12
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/28; G01L5/282; G01L3/00; G01L3/24; G01M; G01M17/00; G01M17/007; G01M17/0072
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |