Patent US3279467A successfully refreshed from Google Patents.
US3279467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drainage apparatus
Assignee: Individual
•
Filing: 1963-06-18
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Granted: 1966-10-18
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Expires: 1983-06-18
Abstract
No abstract record available.
Inventors
- 👤 Peter C Hofstra
- 👤 Robert W Mckirdy
- 👤 Harvey J Engelsher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/60; A61M1/61; A61M2209/00; A61M2209/08; A61M2209/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
AN APPARATUS IN WHICH FLUIDS MAY BE COLLECTED AND STORED, CONSISTING OF A FIRST CLOSED CHAMBER FORMED WITH A SUPPORTIVE BASE, A SECOND CHAMBER WITHIN SAID FIRST CHAMBER OPEN AT ITS UPPER END AND ATTACHABLY MOUNTED TO THE INNER SURFACE OF THE BASE THEREOF, SAID FIRST CHAMBER HAVING FORMED INTEGRALLY AND PERFORATE THROUGH ITS UPPER BOUNDARY A FIRST TUBE OPEN AT ITS ENDS, ONE END BEING INWARDLY TO ITS TERMINATION IMMEDIATELY WITHIN SAID FIRST CHAMBER''S UPPER BOUNDARY, THE OTHER END ADAPTED TO BE CONNECTED TO A SOURCE OF NEGATIVE PRESSURE, A SECOND TUBE OPEN AT ITS ENDS LEADING OUTWARDLY THROUGH SAID UPPER BOUNDARY FROM ITS ORIGIN NEAR THE BASE OF SAID FIRST CHAMBER, THE OUTER END OF SAID SECOND TUBE ADAPTED TO BE CONNECTED TO A CAVITY TO BE ASPIRATED, A THIRD TUBE OPEN AT ITS ENDS AND INTRUDING DOWNWARDLY THROUGH SAID UPPER BOUNDARY WITHIN THE SAID SECOND CHAMBER AND SLIDABLY MOUNTED NEAR TO THE SAID FIRST AND SECOND TUBES HAVING TOGETHER WITH THE SAID THIRD TUBE, EACH ITS LUMINAR AXIS DISPOSED IN PARALLEL AND VERTICAL SENSE, WHEREBY WHEN THE
Claim 2
Independent Claim
180 words
AN APPARATUS IN WHICH FLUIDS MAY BE COLLECTED AND STORED, CONSISTING OF A FIRST CLOSED CHAMBER FORMED WITH A SUPPORTIVE BASE, A SECOND CHAMBER WITHIN SAID FIRST CHAMBER OPEN AT ITS UPPER END AND ATTACHABLY MOUNTED TO THE INNER SURFACE OF THE BASE THEREOF, SAID FIRST CHAMBER HAVING FORMED INTEGRALLY AND PERFORATE THROUGH ITS UPPER BOUNDARY A FIRST TUBE OPEN AT ITS ENDS, ONE END BEING INWARDLY TO ITS TERMINATION IMMEDIATELY WITHIN SAID FIRST CHAMBER''S UPPER BOUNDARY, THE OTHER END ADAPTED TO BE CONNECTED TO A SOURCE OF NEGATIVE PRESSURE, A SECOND TUBE OPEN AT ITS ENDS LEADING OUTWARDLY THROUGH SAID UPPER BOUNDARY FROM ITS ORIGIN NEAR THE BASE OF SAID FIRST CHAMBER, THE OUTER END OF SAID SECOND TUBE ADAPTED TO BE CONNECTED TO A CAVITY TO BE ASPIRATED, A THIRD TUBE OPEN AT ITS ENDS AND INTRUDING DOWNWARDLY THROUGH SAID UPPER BOUNDARY WITHIN THE SAID SECOND CHAMBER AND SLIDABLY MOUNTED NEAR TO THE SAID FIRST AND SECOND TUBES HAVING TOGETHER WITH THE SAID THIRD TUBE, EACH ITS LUMINAR AXIS DISPOSED IN PARALLEL AND VERTICAL SENSE, WHEREBY WHEN THE
References Cited (Backward Citations)
US2355620A
Cited
US2397257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |