US3588124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for pumps and other similar machines
Assignee: GUINARD POMPES
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Filing: 1968-12-16
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Granted: 1971-06-28
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Expires: 1988-12-16
Abstract
Abstract A SEALING DEVICE FOR PUMPS, COMPRESSORS AND OTHER SIMILAR MACHINES WHICH DEVELOP HIGH PRESSURES. THE SEALING DEVICE COMPRISES AT LEAST A NORMALLY OPERATIVE PACKING AND STANDBY NORMALLY INOPERATIVE PACKING WHICH BECOMES OPERATIVE WHEN THE NORMALLY OPERATIVE PACKING FAILS. THE STANDBY PACKING IS FITTED UPSTREAM OF THE NORMALLY OPERATIVE PACKING AND IS AUTOMATICALLY RENDERED OPERATIVE BY A DISPLACEABLE PLUNGER DEVICE WHICH IS RESPONSIVE TO FLUID PRESSURE PREVAILING IN A CHAMBER SUPPLIED WITH LEAKAGE FLUID RECOVERED AT THE OUTLET SIDE OF THE DOWNSTREAM NORMALLY OPERATIVE PACKING WHEN THE NORMALLY OPERATIVE PACKING BECOMES DEFECTIVE.
Inventors
- 👤 Paul Andre Guinard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:58
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F16J15/002; F16J15/008; Y; Y10; Y10S; Y10S277/00; Y10S277/929
Claims Analysis
Total Claims: 0
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References 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |