Braking force trailer
Abstract
Abstract A BRAKING FORCE TRAILER FOR MEASURING THE EFFECTIVENESS OF BRAKING BETWEEN A TIRE AND THE SURFACE ON WHICH THE TIRE RUNS HAS A TEST WHEEL ON WHICH THE TEST TIRE IS MOUNTED. THE TEST WHEEL IS MOUNTED AT ONE END OF AN ARM THE OTHER END OF WHICH IS PIVOTALLY MOUNTED TO ALLOW THE ARM TO SWING IN A VERTICAL PLANE RELATIVE TO THE REST OF THE TRAILER. THE TEST WHEEL IS EQUIPPED WITH A BRAKE SO THAT UPON APPLYING THE BRAKE THE FORCE GENERATED BETWEEN THE TEST WHEEL TIRE AND THE RUNNING SURFACE CAUSES THE SUPPORTING ARM TO SWING BACKWARDS RELATIVE TO THE REMAINDER OF THE TRAILER. A LOAD CELL IS MOUNTED BETWEEN THE SUPPORTING ARM AND THE FIXED PART OF THE TRAILER TO MEASURE THE FORCE GENERATED UPON BRAKING.
Inventors
- 👤 Francis Ian Victor Walker
Bibliographic Details
Claims Analysis
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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 |