Ground engaging implement supports for attachment to tractors
Abstract
Abstract A GROUND ENGAGING SUPPORT FOR ATTACHMENT TO A TRACTOR COMPRISES A SUPPORT STRUCTURE ON WHICH AN IMPLEMENT MAY BE MOUNTED, WHICH SUPPORTS STRUCTURE IS ADAPTED FOR ATTACHMENT TO A TRACTOR BY MEANS OF PIVOTAL CONNECTIONS BETWEEN THE SUPPORT STRUCTURE AND UPPER AND LOWER TLINKS EXTENDING REARWARDLY ON THE TRACTOR, SO THAT THE SUPPORT STRUCTURE MAY BE BROUGHT INTO AND OUT OF CONTACT WITH THE GROUND BY SWINGING THE LINKS. A SUBSIDIARY PIVOTED LINKAGE IS CONNECTED BETWEEN THE SUPPORT STRUCTURE AND AT LEAST ONE OF THE LINKS AN HYDRAULIC RAM BEING PROVIDED TO DEFORM THE SUBSIDIARY LINKAGE INA MANNER TO IMPART A DOWNWARD LOAD TO THE SUPPORT STRUCTURE WHEN IT IS IN ENGAGEMENT WITH THE GROUND.
Inventors
- 👤 Harry William Norton
- 👤 Ian Robertson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |