US3106299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary tower crane
Assignee: Individual
•
Filing: 1961-02-10
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Granted: 1963-10-08
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Expires: 1981-02-10
Abstract
No abstract record available.
Inventors
- 👤 Pingon Pierre Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:05
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/26; B66C23/28; B66C23/283; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18648
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
APPARATUS FOR MOVING AN END ELEMENT CARRYING A JIB AND COUNTER JIB OF A CRANE RELATIVE TO A MAST COMPOSED OF STANDARD ELEMENTS TO LENTHEN AS WELL AS SHORTEN SAID MAST COMPRISING SCREW MEANS ROTATABLY MOUNTED ON SAID END ELEMENT, SAID SCREW MEANS HAVING A LENGTH LONGER THAN EACH OF SAID STANDARD ELEMENTS, NUT MEANS MOUNTED ON SAID SCREW MEANS, TO BE MOVABLE THEREALONG UPON ROTATION OF SAID SCREW MEANS, CROSS MEMBER MEANS CONNECT TO SAID SCREW MEANS FOR ENGAGING THE UPPER END OF THE LAST OF THE STANDARD ELEMENTS TO DEFINE A SUPPORT TO MOVE SAID END ELEMENT RELATIVE TO THE LAST STANDARD ELEMENT UPON ROTATION OF SAID SCREW MEANS, DRIVING MEANS OPERATIVELY CONNECTED TO SAID SCREW MEANS TO ROTATE SAME, AND LOCKING MEANS DISPOSED BETWEEN SAID END ELEMENT AND SAID MAST TO LOCK SAID END ELEMENT THEREON TO MOVE SAID NUT AND CROSS MEMBER MEANS ALONG SAID SCREW MEANS.
Claim 2
Dependent Claim
151 words
APPARATUS FOR MOVING AN END ELEMENT CARRYING A JIB AND COUNTER JIB OF A CRANE RELATIVE TO A MAST COMPOSED OF STANDARD ELEMENTS TO LENTHEN AS WELL AS SHORTEN SAID MAST COMPRISING SCREW MEANS ROTATABLY MOUNTED ON SAID END ELEMENT, SAID SCREW MEANS HAVING A LENGTH LONGER THAN EACH OF SAID STANDARD ELEMENTS, NUT MEANS MOUNTED ON SAID SCREW MEANS, TO BE MOVABLE THEREALONG UPON ROTATION OF SAID SCREW MEANS, CROSS MEMBER MEANS CONNECT TO SAID SCREW MEANS FOR ENGAGING THE UPPER END OF THE LAST OF THE STANDARD ELEMENTS TO DEFINE A SUPPORT TO MOVE SAID END ELEMENT RELATIVE TO THE LAST STANDARD ELEMENT UPON ROTATION OF SAID SCREW MEANS, DRIVING MEANS OPERATIVELY CONNECTED TO SAID SCREW MEANS TO ROTATE SAME, AND LOCKING MEANS DISPOSED BETWEEN SAID END ELEMENT AND SAID MAST TO LOCK SAID END ELEMENT THEREON TO MOVE SAID NUT AND CROSS MEMBER MEANS ALONG SAID SCREW MEANS.
References Cited (Backward Citations)
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |