Air gun
Abstract
Abstract AIR GUN FOR SCARING BIRDS AND OTHER UNDESIRABLE CREATURES, COMPRISING AN ELONGATED RESERVOIR WHEREIN A PLURALITY OF BALLS IS STORED AND WHICH CAN BE PRESSURIZED. THE BALLS ARE EXPELLED ONE BY ONE WHEN THE AIR PRESSURE IN THE RESERVOIR ATTAINS A VALUE CAPABLE OF FORCING ONE BALL THROUGH AN ORIFICE IN THE RESERVOIR WALL, OVERCOMING THE RESISTING FRICTIONAL FORCE BETWEEN THE ORIFICE AND THE BALL. EITHER THE BALLS OR THE ORIFICE WALL CAN BE MADE ELASTIC OR DEFORMABLE WHILE THE OTHER ELEMENT IS MADE RELATIVELY RIGID OR NON-DEFORMABLE. IN A PORTION OF THE RESERVOIR, VERTICALLY ALIGNED ABOVE SAID ORIFICE, IS A PADDLE MEMBER WHICH IS KEPT SIDEWAYS BY THE JET OF AIR WHICH OPERATES THE GUN, UPON THE PASSAGE OF A BALL THROUGH SAID ORIFICE. THE RESERVOR IS ASSOCIATED WITH AN AUXILIARY RESERVOIR, BY WAY OF A NARROW PASSAGE, FOR ALTERNATIVELY STORING AND DELIVERING AN AMOUNT OF AIR WHICH ASSISTS IN FORCING ONE BALL AT A TIME THROUGH SAID ORIFICE.
Inventors
- 👤 Waldemar Teixeira De Freitas
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |