Patent US3132428A successfully refreshed from Google Patents.
US3132428A
Expired / Lapsed
US
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Leveling device
Assignee: Haissig Inc
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Filing: 1962-01-12
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Granted: 1964-05-12
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Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 Harold O Haissig
- 👤 Raymond R Haissig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:40
CPC Classifications
G; G01; G01C; G01C5/00; G01C5/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A LEVELING DEVICE INCLUDING A PAIR OF CONTAINERS EACH HAVING A BASE, AN UPWARDLY EXTENDING TRANSPARENT TUBULAR MEMBER PROVIDED WITH GRADUATIONS AND MEANS FOR CONNECTING SAID BASE TO SAID MEMBER IN A SEALED JOINT; A HYDRAULIC TUBE INTERCONNECTING SAID BASES; A DRAIN PASSAGEWAY IN EACH OF SAID BASES; AND FLUID FLOW CONTROL VALVE MEANS IN EACH OF SAID BASES CONNECTING TO THE TUBE, TUBULAR MEMBER AND DRAIN PASSAGEWAY, SAID FLUID FLOW CONTROL VALVE MEANS HAVING A PLURALITY OF INTERSECTING PASSAGEWAYS AND BEING MOVABLE BETWEEN A PLURALITY OF POSITIONS INCLUDING A FIRST POSITION CONNECTING SAID TUBE AND SAID TUBULAR MEMBER FOR RESTRICTED FLOW OF FLUID THEREBETWEEN, A SECOND POSITION CONNECTING SAID TUBE AND SAID TUBULAR MEMBER FOR FREE FLOW THEREBETWEEN AND CONNECTING SAID TUBE AND SAID TUBULAR MEMBER WITH SAID DRAIN PASSAGE, A THIRD POSITION CONNECTING SAID TUBE AND SAID TUBULAR MEMBER THROUGH A RESTRICTED FLUID PASSAGE FOR RESTRICTED FLUID FLOW THEREBETWEEN AND A FOURTH POSITION BLOCKING SAID TUBE AND TUBULAR MEMBER FROM FLUID FLOW THEREBETWEEN AND BLOCKING SAID TUBE AND SAID TUBULAR MEMBER FROM SAID DRAIN PASSAGE.
Claim 2
Dependent Claim
177 words
A LEVELING DEVICE INCLUDING A PAIR OF CONTAINERS EACH HAVING A BASE, AN UPWARDLY EXTENDING TRANSPARENT TUBULAR MEMBER PROVIDED WITH GRADUATIONS AND MEANS FOR CONNECTING SAID BASE TO SAID MEMBER IN A SEALED JOINT; A HYDRAULIC TUBE INTERCONNECTING SAID BASES; A DRAIN PASSAGEWAY IN EACH OF SAID BASES; AND FLUID FLOW CONTROL VALVE MEANS IN EACH OF SAID BASES CONNECTING TO THE TUBE, TUBULAR MEMBER AND DRAIN PASSAGEWAY, SAID FLUID FLOW CONTROL VALVE MEANS HAVING A PLURALITY OF INTERSECTING PASSAGEWAYS AND BEING MOVABLE BETWEEN A PLURALITY OF POSITIONS INCLUDING A FIRST POSITION CONNECTING SAID TUBE AND SAID TUBULAR MEMBER FOR RESTRICTED FLOW OF FLUID THEREBETWEEN, A SECOND POSITION CONNECTING SAID TUBE AND SAID TUBULAR MEMBER FOR FREE FLOW THEREBETWEEN AND CONNECTING SAID TUBE AND SAID TUBULAR MEMBER WITH SAID DRAIN PASSAGE, A THIRD POSITION CONNECTING SAID TUBE AND SAID TUBULAR MEMBER THROUGH A RESTRICTED FLUID PASSAGE FOR RESTRICTED FLUID FLOW THEREBETWEEN AND A FOURTH POSITION BLOCKING SAID TUBE AND TUBULAR MEMBER FROM FLUID FLOW THEREBETWEEN AND BLOCKING SAID TUBE AND SAID TUBULAR MEMBER FROM SAID DRAIN PASSAGE.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |