Patent US2116631A successfully refreshed from Google Patents.
Patent US3096895A successfully refreshed from Google Patents.
US3096895A
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Lifting unit
Assignee: Individual
•
Filing: 1957-02-13
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Granted: 1963-07-09
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Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 John W Kappen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:48
CPC Classifications
B; B61; B61J; B61J1/00; B61J1/10; B65; B65G; B65G67/00; B65G2814/00; B65G2814/03; B65G2814/0301; B65G2814/0311
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A LIFTING UNIT, INCLUDING A BASE, ROCKING MEANS SUPPORTED BY SAID BASE FOR RELATIVE ROCKING MOVEMENT, A LIFT ASSEMBLY SUPPORTED BY SAID ROCKING MEANS FOR UNISON ROCKING AND RELATIVE ELEVATING AND LOWERING MOTIONS, THE WEIGHT OF SAID LIFT ASSEMBLY BEING DISPOSED TO ROCK SAID ROCKING MEANS IN ONE DIRECTION, A HYDRAULIC PISTON AND CYLINDER CONNECTION BETWEEN SAID BASE AND SAID ROCKING MEANS, ANOTHER HYDRAULIC PISTON AND CYLINDER CONNECTION BETWEEN SAID ROCKING MEANS AND SAID LIFT ASSEMBLY, MEANS FOR SUPPLYING HYDRAULIC FLUID UNDER PRESSURE SIMULTANEOUSLY TO THE FIRST SAID CONNECTION IN A MANNER TO ROCK SAID ROCKING MEANS IN THE OPPOSITE DIRECTION AND TO THE SAID OTHER CONNECTION IN A MANNER TO ELEVATE SAID LIFT ASSEMBLY, SAID CONNECTIONS PRESENTING A DIFFERENTIAL PISTON AREA TO THE HYDRAULIC FLUID TO EFFECT SAID ROCKING AND ELEVATING MOTIONS IN A PREDETERMINED SEQUENCE.
Claim 2
Dependent Claim
137 words
A LIFTING UNIT, INCLUDING A BASE, ROCKING MEANS SUPPORTED BY SAID BASE FOR RELATIVE ROCKING MOVEMENT, A LIFT ASSEMBLY SUPPORTED BY SAID ROCKING MEANS FOR UNISON ROCKING AND RELATIVE ELEVATING AND LOWERING MOTIONS, THE WEIGHT OF SAID LIFT ASSEMBLY BEING DISPOSED TO ROCK SAID ROCKING MEANS IN ONE DIRECTION, A HYDRAULIC PISTON AND CYLINDER CONNECTION BETWEEN SAID BASE AND SAID ROCKING MEANS, ANOTHER HYDRAULIC PISTON AND CYLINDER CONNECTION BETWEEN SAID ROCKING MEANS AND SAID LIFT ASSEMBLY, MEANS FOR SUPPLYING HYDRAULIC FLUID UNDER PRESSURE SIMULTANEOUSLY TO THE FIRST SAID CONNECTION IN A MANNER TO ROCK SAID ROCKING MEANS IN THE OPPOSITE DIRECTION AND TO THE SAID OTHER CONNECTION IN A MANNER TO ELEVATE SAID LIFT ASSEMBLY, SAID CONNECTIONS PRESENTING A DIFFERENTIAL PISTON AREA TO THE HYDRAULIC FLUID TO EFFECT SAID ROCKING AND ELEVATING MOTIONS IN A PREDETERMINED SEQUENCE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
US2569053A
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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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |