Quick action jack
Abstract
Abstract AN UPRIGHT SUPPORT JACK STRUCTURE INCLUDING A LOWER BASE PORTION AND AN UPPER SCREW PORTION PARTIALLY TELESCOPED DOWNWARLDY INTO THE UPPER END OF THE BASE PORTION. A RADIALLY EXPANDED SEGMENTAL THRUST NUT IS SUPPORTED WITHIN THE UPPER END PORTION OF THE BASE PORTION AGAINST ROTATION RELATIVE THERETO AND THE BASE PORTION INCLUDES MEANS OPERATIVE FROM THE EXTERIOR OF THE BASE PORTION FOR RADIALLY INWARDLY SHIFTING THE SEGMENTS OF THE THRUST NUT INTO THREADED ENGAGEMENT WITH THE SCREW PORTION OF THE JACK. WHEN THE SEGMENTS OF THE THRUST NUT ARE RADIALLY INWARDLY SHIFTED INTO THREADED ENGAGEMENT WITH THE SCREW PORTION THE THRUST NUT SEGMENTS ARE SUPPORTED FROM THE BASE PORTION AGAINST DOWNWARD MOVEMENT RELATIVE THERETO AND ACCORDINGLY, ROTATION OF THE UPPER SCREW PORTION RELATIVE TO THE BASE PORTION WHEN THE THRUST NUT IS THREADEDLY ENGAGED WITH THE SCREW PORTION WILL CAUSE THE SCREW PORTION TO BE ELEVATED RELATIVE TO THE BASE PORTION.
Inventors
- 👤 Alan F Kollmar
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |