Air support
Abstract
Abstract AN AIR SUPPORT FOR MAINTAINING A LOAD AT A PRESELECTED HEIGHT WHILE ISOLATING THE LOAD WITH RESPECT TO VIBRATIONS. THE SUPPORT INCLUDES A HOUSING WHICH IS DISPOSED ABOVE AND IN SLIDABLE ENGAGEMENT WITH A BASE. SUPPORT FOR THE HOUSING IS PROVIDED BY A INFLATABLE BAG TO WHICH COMPRESSED AIR IS SUPPLIED THROUGH AN AIR ADMISSION VALVE. WHEN THE HOUSING MOVES DOWNWARD FROM THE PRESELECTED HEIGHT, A ROD FORCES THE CHECK VALVE OPEN ADMITTING ADDITIONAL AIR TO THE BAG. THE ROD CARRIES A PISTON JOURNALLED IN A PASSAGEWAY WHEREBY AIR IS CONTINUOUSLY ALLOWED TO ESCAPE FROM THE SYSTEM. IF THE HOUSING MOVES ABOVE THE PRESELECTED HEIGHT BY MORE THAN A PREDETERMINED DISTANCE THE ROD ALSO MOVES UPWARD ALLOWING ADDITIONAL AIR TO ESCAPE FROM THE BAG TO PROVIDE A FAST RETURN TO THE PRESELECTED HEIGHT WITHOUT OR WITH A MINIMUM OF OSCILLATION.
Inventors
- 👤 Billy Y K Mui
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) | 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 |