Patent US3279260A successfully refreshed from Google Patents.
US3279260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material sampling device and dust closure therefor
Assignee: Galigher Co
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Filing: 1964-05-07
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Granted: 1966-10-18
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Expires: 1984-05-07
Abstract
No abstract record available.
Inventors
- 👤 Fred R Huntington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:00
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A MATERIAL SAMPLING DEVICE, COMPRISING A HOUSING HAVING A DISCHARGE OUTLET; A CONVEYING HOPPER HAVING AN INLET AND A DISCHARGE END; MEANS MOUNTING SAID HOPPER FOR RECIPROCATING MOVEMENT WITHIN SAID HOUSING; A CHUTE EXTENDING INTO SAID HOUSING HAVING AN OPEN SAMPLE RECEIVING END IN THE HOUSING, SAID OPENING BEING POSITIONED BENEATH THE DISCHARGE END OF THE HOPPER WHEN SAID HOPPER IS INTERMEDIATE ITS PATH OF TRAVEL; A PAIR OF CLOSURE MEMBERS HAVING ARCUATELY SHAPED SEALING SURFACES CARRIED BY SAID HOPPER, ONE OF SAID CLOSURE MEMBERS BEING ADAPTED TO SEAL THE OPEN SAMPLE RECEIVING END WHEN THE HOPPER IS AT ONE SIDE OF THE OPENING AND THE OTHER OF
Claim 2
Dependent Claim
108 words
A MATERIAL SAMPLING DEVICE, COMPRISING A HOUSING HAVING A DISCHARGE OUTLET; A CONVEYING HOPPER HAVING AN INLET AND A DISCHARGE END; MEANS MOUNTING SAID HOPPER FOR RECIPROCATING MOVEMENT WITHIN SAID HOUSING; A CHUTE EXTENDING INTO SAID HOUSING HAVING AN OPEN SAMPLE RECEIVING END IN THE HOUSING, SAID OPENING BEING POSITIONED BENEATH THE DISCHARGE END OF THE HOPPER WHEN SAID HOPPER IS INTERMEDIATE ITS PATH OF TRAVEL; A PAIR OF CLOSURE MEMBERS HAVING ARCUATELY SHAPED SEALING SURFACES CARRIED BY SAID HOPPER, ONE OF SAID CLOSURE MEMBERS BEING ADAPTED TO SEAL THE OPEN SAMPLE RECEIVING END WHEN THE HOPPER IS AT ONE SIDE OF THE OPENING AND THE OTHER OF
References Cited (Backward Citations)
US782235A
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 |