US3398967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Levelling devices
Assignee: Priestman Brothers Ltd
•
Filing: 1966-10-27
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Granted: 1968-08-27
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Expires: 1986-10-27
Abstract
No abstract record available.
Inventors
- 👤 Brocklebank Norman
- 👤 Richardson Bert
- 👤 Acum Jesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:55
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/02; F16M11/18; B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/78; B66C23/84; F16M11/04; F16M11/06; F16M11/08; F16M11/20; F16M11/2007; F16M11/2035; F16M11/2064; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0378
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
IN AN APPARATUS COMPRISING A SUBSTRUCTURE WITH A NOMINAL VERTICAL AXIS, A SUPERSTRUCTURE WITH A NOMINAL VERTICAL AXIS AND MEANS FOR LEVELLING SAID SUPERSTRUCTURE RELATIVELY TO SAID SUBSTRUCTURE SO THAT SAID NOMINAL VERTICAL AXIS OF SAID SUPERSTRUCTURE IS TRULY VERTICAL WHEN SAID NOMINAL VERTICAL AXIS OF SAID SUBSTRUCTURE IS OFFSET AT A SMALL ANGLE TO THE TRUE VERTICAL; THE IMPROVED SUPERSTRUCTURE LEVELLING MEANS WHICH COMPRSIES A FIRST INTERMEDIATE MEMBER, A FIRST ROTARY BEARING COUPLING SAID INTERMEDIATE MEMBER TO SAID SUBSTRUCTURE AND HAVING AN AXIS OF ROTATION COINCIDENTAL WITH SAID NOMINAL VERTICAL AXIS OF SAID SUBSTRUCTURE, A SECOND ROTARY BEARING COUPLING SAID INTERMEDIATE MEMBER TO SAID SUPERSTRUCTURE AND HAVING AN AXIS OF ROTATION EQUALLY INCLINED TO SAID NOMINAL VERTICAL AXIS OF SAID SUBSTRUCTURE AND TO SAID NOMINAL VERTICAL AXIS OF SAID SUPERSTRUCTURE, A SECOND INTERMEDIATE MEMBER, MOUNTED ON SAID FIRST INTERMEDIATE MEMBER THROUGH SAID SECOND ROTARY BEARING, A THIRD ROTARY BEARING COUPLING SAID SUPERSTRUCTURE TO SAID SECONDARY INTERMEDIATE MEMBER AND HAVING AN AXIS OF ROTATION COINCIDENTAL WITH SAID NOMINAL VERTICAL AXIS OF SAID SUPERSTRUCTURED, AND MEANS FOR PRODUCING ROTATION AT SAID FIRST, SECOND AND THIRD ROTARY BEARINGS.
Claim 2
Dependent Claim
186 words
IN AN APPARATUS COMPRISING A SUBSTRUCTURE WITH A NOMINAL VERTICAL AXIS, A SUPERSTRUCTURE WITH A NOMINAL VERTICAL AXIS AND MEANS FOR LEVELLING SAID SUPERSTRUCTURE RELATIVELY TO SAID SUBSTRUCTURE SO THAT SAID NOMINAL VERTICAL AXIS OF SAID SUPERSTRUCTURE IS TRULY VERTICAL WHEN SAID NOMINAL VERTICAL AXIS OF SAID SUBSTRUCTURE IS OFFSET AT A SMALL ANGLE TO THE TRUE VERTICAL; THE IMPROVED SUPERSTRUCTURE LEVELLING MEANS WHICH COMPRSIES A FIRST INTERMEDIATE MEMBER, A FIRST ROTARY BEARING COUPLING SAID INTERMEDIATE MEMBER TO SAID SUBSTRUCTURE AND HAVING AN AXIS OF ROTATION COINCIDENTAL WITH SAID NOMINAL VERTICAL AXIS OF SAID SUBSTRUCTURE, A SECOND ROTARY BEARING COUPLING SAID INTERMEDIATE MEMBER TO SAID SUPERSTRUCTURE AND HAVING AN AXIS OF ROTATION EQUALLY INCLINED TO SAID NOMINAL VERTICAL AXIS OF SAID SUBSTRUCTURE AND TO SAID NOMINAL VERTICAL AXIS OF SAID SUPERSTRUCTURE, A SECOND INTERMEDIATE MEMBER, MOUNTED ON SAID FIRST INTERMEDIATE MEMBER THROUGH SAID SECOND ROTARY BEARING, A THIRD ROTARY BEARING COUPLING SAID SUPERSTRUCTURE TO SAID SECONDARY INTERMEDIATE MEMBER AND HAVING AN AXIS OF ROTATION COINCIDENTAL WITH SAID NOMINAL VERTICAL AXIS OF SAID SUPERSTRUCTURED, AND MEANS FOR PRODUCING ROTATION AT SAID FIRST, SECOND AND THIRD ROTARY BEARINGS.
References Cited (Backward Citations)
US2790648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |