Waste gas sampler
Abstract
Abstract DEVICE FOR THE REMOVAL OF WASTE GAS SAMPLES FROM THE EXHAUST PIPE OF INTERNAL COMBUSTION ENGINES HAVING A CHAMBER CONNECTED TO THE EXHAUST PIPE TOGETHER WITH A PUMP AND A MOTOR DRIVINGLY CONNECTED WITH THE PUMP. A SAMPLING PIPE HAS ONE END CONNECTED TO THE SUCTION SIDE OF THE PUMPL A CONTAINER CONNECTED TO THE DELIVERY SIDE OF THE PUMP RECEIVES THE WASTE GAS SAMPLE. A SUCTION PIPE IS CONNECTED TO THE COMBUSTION ENGINE WITH AN EQUALIZING TANK COMMUNICATING WITH THE SUCTION PIPE. AN AIR METER IS SERIES-CONNECTED WITH SAID EQUALIZATION TANK AND A SYNCHRONIZER IS INTERPOSED BETWEEN THE AIR METER AND THE PUMP MOTOR WHICH REGULATES THE SPEED OF THE PUMP MOTOR PROPORTIONATELY TO THE SPEED OF SAID AIR METER.
Inventors
- 👤 Hans List
- 👤 Erich Schreiber
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |