Pneumatic vibration generator
Abstract
Abstract A SELF-EXCITED PNEUMATIC OSCILLATOR IS DESCRIBED WHICH INCLUDES A RECIPROCATING VALVE MEMBER THAT IS CAPABLE OF HIGH FREQUENCY OPERATION. THE VALVE MEMBER IS DISPOSED IN A HOUSING HAVING A FIRST ACTIVE SPRING CHAMBER, AND A SECOND SPRING CHAMBER SPACED THEREFROM. BOTH SPRING CHAMBERS ARE CHARGED BY A SOURCE OF PRESSURIZED AIR AND ACT UPON OPPOSITE ENDS OF THE VALVE MEMBER. A DISCHARGE CHAMBER IS DISPOSED SO THAT IT IS BROUGHT PERIODICALLY IN COMMUNICATION WITH THE FIRST CHAMBER AS THE VALVE RECIPROCATES, WHEREBY THE OSCILLATOR CONVERTS THE ENERGY OF THE PRESSURIZED FLUID FLOWING FROM THE ACTIVE CHAMBER TO THE DISCHARGE CHAMBER INTO SELF-SUSTAINED RECIPROCATING MOTION OF THE VALVE. THE OSCILLATOR INCLUDES A FILTER BETWEEN THE SOURCE OF PRESSURIZED AIR AND THE SPRING CHAMBERS TO MINIMIZE ALTERNATING PRESSURE FLUCTUATIONS IN THE AIR SUPPLY LINE, THEREBY ENHANCING EFFICIENCY. THE FILTER AND VALVING PROVIDE FOR AUTOMATIC SELF-STARTING FOLLOWED BY A SHIFT TO A PREDETERMINED VALVE POSITION FOR EFFICIENT OPERATION AT MAXIMUM LOAD.
Inventors
- 👤 Boyd A Wise
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |