US3267723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid inspection system and apparatus
Assignee: Douglas Aircraft Co Inc
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Filing: 1963-12-18
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Granted: 1966-08-23
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Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 Norman F Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:54
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06; G01N15/0606; G01N15/0618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
291 words
APPARATUS FOR DETERMINING THE PRESENCE OF CONTAMINANTS IN A LIQUID COMPRISING: A FLUID HOUSING HAVING AN OPEN BOTTOM AND AN OPEN TOP; A FIRST LIQUID INLET PORT MOUNTED IN SAID HOUSING ABOVE SAID OPEN BOTTOM; A FIRST POPPET VALVE NORMALLY CLOSING SAID FIRST INLET PORT; A FIRST PARTITION MOUNTED IN SAID HOUSING INTERMEDIATE SAID FIRST INLET PORT AND SAID OPEN BOTTOM; A FIRST LIQUID OUTLET PORT MOUNTED IN SAID FIRST PARTITION IN COMMUNICATION WITH SAID OPEN BOTTOM; A SECOND POPPET VALVE NORMALLY CLOSING SAID FIRST OUTLET PORT; A SECOND LIQUID OUTLET PORT MOUNTED IN SAID HOUSING INTERMEDIATE SAID FIRST INLET PORT AND SAID OPEN TOP; A CHECK VALVE MOUNTED IN SAID SECOND OUTLET PORT FOR PERMITTING FLOW OF LIQUID FROM SAID HOUSING WHILE PREVENTING BACK FLOW INTO SAID HOUSING; A SECOND PARTITION MOUNTED IN SAID HOUSING INTERMEDIATE SAID OPEN TOP AND SAID SECOND OUTLET PORT; A SECOND LIQUID INLET PORT MOUNTED IN SAID SECOND PARTITION FOR PLACING SAID OPEN TOP IN FLUID COMMUNICATION WITH SAID HOUSING; A NORMALLY CLOSED POPPET VALVE MOUNTED IN SAID SECOND INLET PORT FOR PERMITTING FLOW OF FLUID INTO SAID HOUSING WHILE PREVENTING FLOW OF FLUID FROM SAID HOUSING; A FIRST FILTER PATCH MOUNTED IN SAID OPEN TOP ABOVE SAID SECOND INLET PORT; A THIRD INLET PORT MOUNTED IN SAID HOUSING IN FLUID COMMUNICATION WITH SAID OPEN TOP ABOVE SAID FIRST FILTER PATCH; A REMOVABLE COVER MEMBER FOR CLOSING SAID OPEN TOP ABOVE SAID FIRST FILTER PATCH; AND A FIELD MONITOR POSITIONABLE IN SAID OPEN BOTTOM, SAID FIELD MONITOR HOUSING A SECOND FILTER PATCH AND INCLUDING AN INLET NECK ENGAGEABLE WITH SAID FIRST OUTLET VALVE TO UNSEAT SAID VALVE AND PERMIT FLOW OF LIQUID FROM SAID HOUSING THROUGH SAID FIRST OUTLET PORT AND SAID SECOND FILTER PATCH.
Claim 2
Dependent Claim
291 words
APPARATUS FOR DETERMINING THE PRESENCE OF CONTAMINANTS IN A LIQUID COMPRISING: A FLUID HOUSING HAVING AN OPEN BOTTOM AND AN OPEN TOP; A FIRST LIQUID INLET PORT MOUNTED IN SAID HOUSING ABOVE SAID OPEN BOTTOM; A FIRST POPPET VALVE NORMALLY CLOSING SAID FIRST INLET PORT; A FIRST PARTITION MOUNTED IN SAID HOUSING INTERMEDIATE SAID FIRST INLET PORT AND SAID OPEN BOTTOM; A FIRST LIQUID OUTLET PORT MOUNTED IN SAID FIRST PARTITION IN COMMUNICATION WITH SAID OPEN BOTTOM; A SECOND POPPET VALVE NORMALLY CLOSING SAID FIRST OUTLET PORT; A SECOND LIQUID OUTLET PORT MOUNTED IN SAID HOUSING INTERMEDIATE SAID FIRST INLET PORT AND SAID OPEN TOP; A CHECK VALVE MOUNTED IN SAID SECOND OUTLET PORT FOR PERMITTING FLOW OF LIQUID FROM SAID HOUSING WHILE PREVENTING BACK FLOW INTO SAID HOUSING; A SECOND PARTITION MOUNTED IN SAID HOUSING INTERMEDIATE SAID OPEN TOP AND SAID SECOND OUTLET PORT; A SECOND LIQUID INLET PORT MOUNTED IN SAID SECOND PARTITION FOR PLACING SAID OPEN TOP IN FLUID COMMUNICATION WITH SAID HOUSING; A NORMALLY CLOSED POPPET VALVE MOUNTED IN SAID SECOND INLET PORT FOR PERMITTING FLOW OF FLUID INTO SAID HOUSING WHILE PREVENTING FLOW OF FLUID FROM SAID HOUSING; A FIRST FILTER PATCH MOUNTED IN SAID OPEN TOP ABOVE SAID SECOND INLET PORT; A THIRD INLET PORT MOUNTED IN SAID HOUSING IN FLUID COMMUNICATION WITH SAID OPEN TOP ABOVE SAID FIRST FILTER PATCH; A REMOVABLE COVER MEMBER FOR CLOSING SAID OPEN TOP ABOVE SAID FIRST FILTER PATCH; AND A FIELD MONITOR POSITIONABLE IN SAID OPEN BOTTOM, SAID FIELD MONITOR HOUSING A SECOND FILTER PATCH AND INCLUDING AN INLET NECK ENGAGEABLE WITH SAID FIRST OUTLET VALVE TO UNSEAT SAID VALVE AND PERMIT FLOW OF LIQUID FROM SAID HOUSING THROUGH SAID FIRST OUTLET PORT AND SAID SECOND FILTER PATCH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |