Telescoping sample probe
Abstract
Abstract A TELESCOPING GAS SAMPLE PROBE INCLUDING, AN ELONGATED RIGID TUBE HAVING A SEALING MEANS IN THE FORM OF A CONICALLY SHAPED RUBBER BELLOWS ATTACHED TO THE LOWER END OF THE ELONGATED TUBE, SAID BELLOWS HAVING AN OPEN LOWER END, MEANS FOR CENTERING THE BELLOWS ON THE ELONGATED TUBE, A FLEXIBLE TUBE HAVING ONE END CONNECTED TO THE UPPER END OF THE ELONGATED TUBE AND THE OTHER END THEREOF PROVIDED WITH A FITTING FOR CONNECTING THE FLEXIBLE TUBE TO A GAS ANALYZING AND INDICATING APPARATUS, A FILTER MEANS DISPOSED IN SAID ELONGATED TUBE FOR FILTERING AN AIR SAMPLE DRAWN THROUGH THE ELONGATED TUBE FROM A TEST HOLE OR FROM THE ATMOSPHERE DIRECTLY ABOVE A VENTING SURFACE AND, A TUBULAR HANDLE SLIDABLY MOUNTED ON SAID ELONGATED TUBE.
Inventors
- 👤 Frederick G Weeks
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) | 1974-10-04 | 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 |