Patent US3312374A successfully refreshed from Google Patents.
US3312374A
Expired / Lapsed
US
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Metering and measuring apparatus
Assignee: WHITLOCK ASSOCIATES Inc
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Filing: 1965-07-22
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Granted: 1967-04-04
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Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Carl H Whitlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:37
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/035; B; B01; B01F; B01F35/00; B01F35/71; B01F35/714; B29; B29B; B29B7/00; B29B7/02; B29B7/22; B29B7/24; B29B7/242; B29B7/244; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A METERING AND MIXING APPARATUS COMPRISING A FILL CHAMBER FOR CONTAINING MATERIAL TO BE METERED; A VERTICALLY ARRANGED METERING CYLINDER, HAVING OPEN UPPER AND LOWER ENDS, EXTENDING INTO AND HAVING ITS UPPER END OPENING INTO SAID CHAMBER THROUGH AN OPENING FORMED IN THE BOTTOM OF SAID CHAMBER; THE LOWER END OF SAID CYLINDER BEING FIXEDLY SECURED TO AND OPENING INTO A MIXING CONTAINER; MEANS FOR RECIPROCATING THE MIXING CONTAINER WITH ITS ATTACHED CYLINDER UPWARDLY AND DOWNWARDLY FOR A DISTANCE SLIGHTLY LESS THAN THE HEIGHT OF SAID CYLINDER; A PISTON ARRANGED WITHIN SAID CYLINDER FOR NORMALLY CLOSING THE LOWER END THEREOF, AND MEANS FOR LOWERING THE PISTON, RELATIVE TO THE CYLINDER, FOR REMOVING THE PISTON FROM THE CYLINDER, AFTER THE MIXING CONTAINER IS MOVED UPWARDLY AND FOR RAISING THE PISTON TO CLOSE OFF THE OPEN LOWER END OF THE CYLINDER; WHEREBY RAISING THE MIXING CONTAINER CAUSES THE CYLINDER TO RISE WITHIN THE CHAMBER AND FILL WITH SAID MATERIAL, AND LOWERING THE PISTON CAUSES THE MATERIAL IN THE CYLINDER TO DUMP INTO THE MIXING CONTAINER.
Claim 2
Dependent Claim
173 words
A METERING AND MIXING APPARATUS COMPRISING A FILL CHAMBER FOR CONTAINING MATERIAL TO BE METERED; A VERTICALLY ARRANGED METERING CYLINDER, HAVING OPEN UPPER AND LOWER ENDS, EXTENDING INTO AND HAVING ITS UPPER END OPENING INTO SAID CHAMBER THROUGH AN OPENING FORMED IN THE BOTTOM OF SAID CHAMBER; THE LOWER END OF SAID CYLINDER BEING FIXEDLY SECURED TO AND OPENING INTO A MIXING CONTAINER; MEANS FOR RECIPROCATING THE MIXING CONTAINER WITH ITS ATTACHED CYLINDER UPWARDLY AND DOWNWARDLY FOR A DISTANCE SLIGHTLY LESS THAN THE HEIGHT OF SAID CYLINDER; A PISTON ARRANGED WITHIN SAID CYLINDER FOR NORMALLY CLOSING THE LOWER END THEREOF, AND MEANS FOR LOWERING THE PISTON, RELATIVE TO THE CYLINDER, FOR REMOVING THE PISTON FROM THE CYLINDER, AFTER THE MIXING CONTAINER IS MOVED UPWARDLY AND FOR RAISING THE PISTON TO CLOSE OFF THE OPEN LOWER END OF THE CYLINDER; WHEREBY RAISING THE MIXING CONTAINER CAUSES THE CYLINDER TO RISE WITHIN THE CHAMBER AND FILL WITH SAID MATERIAL, AND LOWERING THE PISTON CAUSES THE MATERIAL IN THE CYLINDER TO DUMP INTO THE MIXING CONTAINER.
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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |