US3143190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial trucks
Assignee: Linde Material Handling UK Ltd
•
Filing: 1962-06-13
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Granted: 1964-08-04
•
Expires: 1982-06-13
Abstract
No abstract record available.
Inventors
- 👤 Knights Robert Edgar
- 👤 Dixon John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:20
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
A MAST SYSTEM FOR A TELESCOPIC-MASTED INDUSTRIAL LIFT TRUCK, COMPRISING A FIRST FIXED MAST SECTION, A SECOND MAST SECTION WHICH RUNS ON THE FIRST MAST SECTION, A THIRD MAST SECTION WHICH RUNS ON THE SECOND MAST SECTION, A LIFTING CARRIAGE WHICH RUNS ON THE THIRD MAST SECTION, A TWO-STAGE JACK COMPRISING THREE ELEMENTS DISPOSED IN LINE WITH EACH OTHER BETWEEN THE FIRST AND SECOND MAST SECTIONS WHEREOF THE FIRST ELEMENT HAS ONE END CONNECTED TO THE FIXED MAST SECTION ADJACENT THE BOTTOM OF THE LATTER, WHEREOF THE SECOND ELEMENT HAS ONE END CONNECTED TO THE SECOND MAST SECTION ADJACENT THE TOP OF THE LATTER, AND WHEREOF THE THIRD ELEMENT IS DISPOSED INTERMEDIATE AND IS IN TELESCOPIC ENGAGEMENT WITH THE FIRST ELEMENT AND THE SECOND ELEMENT, A FIRST FLEXIBLE TENSION MEMBER CONNECTED BETWEEN THE CARRIAGE, THE THIRD JACK ELEMENT, AND THE UPPER END PORTION OF THE SECOND MAST SECTION FOR LIFTING THE CARRIAGE ALONG THE THIRD MAST SECTION AS THE SECOND AND THIRD JACK ELEMENTS ARE EXTENDED RELATIVE TO EACH OTHER, AND A SECOND FLEXIBLE TENSION MEMBER CONNECTED BETWEEN THE BOTTOM END PORTION OF THE THIRD MAST SECTION, THE TOP END PORTION OF THE SECOND MAST SECTION AND THE FIRST MAST SECTION FOR LIFTING THE THIRD MAST SECTION AS THE FIRST AND THIRD JACK ELEMENTS ARE EXTENDED RELATIVE TO EACH OTHER.
Claim 2
Dependent Claim
220 words
A MAST SYSTEM FOR A TELESCOPIC-MASTED INDUSTRIAL LIFT TRUCK, COMPRISING A FIRST FIXED MAST SECTION, A SECOND MAST SECTION WHICH RUNS ON THE FIRST MAST SECTION, A THIRD MAST SECTION WHICH RUNS ON THE SECOND MAST SECTION, A LIFTING CARRIAGE WHICH RUNS ON THE THIRD MAST SECTION, A TWO-STAGE JACK COMPRISING THREE ELEMENTS DISPOSED IN LINE WITH EACH OTHER BETWEEN THE FIRST AND SECOND MAST SECTIONS WHEREOF THE FIRST ELEMENT HAS ONE END CONNECTED TO THE FIXED MAST SECTION ADJACENT THE BOTTOM OF THE LATTER, WHEREOF THE SECOND ELEMENT HAS ONE END CONNECTED TO THE SECOND MAST SECTION ADJACENT THE TOP OF THE LATTER, AND WHEREOF THE THIRD ELEMENT IS DISPOSED INTERMEDIATE AND IS IN TELESCOPIC ENGAGEMENT WITH THE FIRST ELEMENT AND THE SECOND ELEMENT, A FIRST FLEXIBLE TENSION MEMBER CONNECTED BETWEEN THE CARRIAGE, THE THIRD JACK ELEMENT, AND THE UPPER END PORTION OF THE SECOND MAST SECTION FOR LIFTING THE CARRIAGE ALONG THE THIRD MAST SECTION AS THE SECOND AND THIRD JACK ELEMENTS ARE EXTENDED RELATIVE TO EACH OTHER, AND A SECOND FLEXIBLE TENSION MEMBER CONNECTED BETWEEN THE BOTTOM END PORTION OF THE THIRD MAST SECTION, THE TOP END PORTION OF THE SECOND MAST SECTION AND THE FIRST MAST SECTION FOR LIFTING THE THIRD MAST SECTION AS THE FIRST AND THIRD JACK ELEMENTS ARE EXTENDED RELATIVE TO EACH OTHER.
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |