Patent US577342A successfully refreshed from Google Patents.
US3234792A
Expired / Lapsed
US
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Displacer operated mechanism
Assignee: Magnetrol Inc
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Filing: 1961-02-20
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Granted: 1966-02-15
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Expires: 1981-02-20
Abstract
No abstract record available.
Inventors
- 👤 Charles L Ririe
- 👤 Meyer Roy W De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:05
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/58; G01F23/585; G01F23/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
DISPLACER OPERATED MECHANISM COMPRISING A VERTITICALLY ELONGATED TUBE OF NON-MAGNETIC MATERIAL, A VERTICAL ACTUATING ROD MOVABLE VERTICALLY IN THE TUBE AND EXTENDING FROM THE BOTTOM THEREOF, A MAGNETIC ELEMENT CARRIOED BY THE UPPER END OF THE ROD WITHIN THE TUBE AND OF SMALLER DIAMETER THAN THE INTERIOR DIAMETER OF THE TUBE, A MAGNETIC ELEMENT OUTSIDE OF THE TUBE TO BE MOVED BY THE FIRST NAMED MAGNETIC ELEMENT AS ITS MOVES, A DISPLACER CONNECTED TO THE LOWER END OF THE ROD TO BE MOVED VERTICALLY IN RESPONSE TO CHANGES IN THE LEVEL OF A BODY OF LIQUID TO BE MEASURED, AND A COILED TENSION SPRING FIXEDLY
Claim 2
Dependent Claim
105 words
DISPLACER OPERATED MECHANISM COMPRISING A VERTITICALLY ELONGATED TUBE OF NON-MAGNETIC MATERIAL, A VERTICAL ACTUATING ROD MOVABLE VERTICALLY IN THE TUBE AND EXTENDING FROM THE BOTTOM THEREOF, A MAGNETIC ELEMENT CARRIOED BY THE UPPER END OF THE ROD WITHIN THE TUBE AND OF SMALLER DIAMETER THAN THE INTERIOR DIAMETER OF THE TUBE, A MAGNETIC ELEMENT OUTSIDE OF THE TUBE TO BE MOVED BY THE FIRST NAMED MAGNETIC ELEMENT AS ITS MOVES, A DISPLACER CONNECTED TO THE LOWER END OF THE ROD TO BE MOVED VERTICALLY IN RESPONSE TO CHANGES IN THE LEVEL OF A BODY OF LIQUID TO BE MEASURED, AND A COILED TENSION SPRING FIXEDLY
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |