US3086528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittent vacuum regulator
Assignee: Chemetron Corp
•
Filing: 1959-01-26
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Granted: 1963-04-23
•
Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 Francis J Eichelman
- 👤 Eldridge H Smiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/71; A61M1/74; A61M1/75; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/0616; G05D16/0625; G05D16/063; G05D16/0644; G05D16/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2546; Y10T137/2549
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF REMOVING DRAINAGE FROM A PATIENT WHICH COMPRISES LOCATING A SEALED DRAINAGE COLLECTING RECEPTACLE AT AN ELEVATION HIGHER THAN THE ELEVATION OF THE AREA OF THE PATIENT TO BE DRAINED, PLACING THE AREA TO BE DRAINED IN FLUID COMMUNICATION WITH THE INTERIOR OF SAID RECEPTACLE, AND AUTOMATICALLY AND ALTERNATELY PLACING THE INTERIOR OF SAID RECEPTACLE AT ATMOSPHERIC PRESSURE AND AT A SELECTED LEVEL OF VACUUM SO THAT DRAINAGE FLUIDS ARE CONVEYED FROM SAID AREA TO SAID RECEPTACLE WHEN SAID RECEPTACLE IS PLACED AT SAID SELECTED LEVEL OF VACUUM AND SO THAT A PORTION OF THE PREVIOUSLY WITHDRAWN DRAINAGE FLUID FLOWS TOWARD SAID AREA WHEN SAID RECEPTACLE IS PLACED AT ATMOSPHERIC PRESSURE.
Claim 2
Independent Claim
113 words
A METHOD OF REMOVING DRAINAGE FROM A PATIENT WHICH COMPRISES LOCATING A SEALED DRAINAGE COLLECTING RECEPTACLE AT AN ELEVATION HIGHER THAN THE ELEVATION OF THE AREA OF THE PATIENT TO BE DRAINED, PLACING THE AREA TO BE DRAINED IN FLUID COMMUNICATION WITH THE INTERIOR OF SAID RECEPTACLE, AND AUTOMATICALLY AND ALTERNATELY PLACING THE INTERIOR OF SAID RECEPTACLE AT ATMOSPHERIC PRESSURE AND AT A SELECTED LEVEL OF VACUUM SO THAT DRAINAGE FLUIDS ARE CONVEYED FROM SAID AREA TO SAID RECEPTACLE WHEN SAID RECEPTACLE IS PLACED AT SAID SELECTED LEVEL OF VACUUM AND SO THAT A PORTION OF THE PREVIOUSLY WITHDRAWN DRAINAGE FLUID FLOWS TOWARD SAID AREA WHEN SAID RECEPTACLE IS PLACED AT ATMOSPHERIC PRESSURE.
References Cited (Backward Citations)
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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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |