Patent US3172500A successfully refreshed from Google Patents.
US3172500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load-lifting trucks
Assignee: Linde Material Handling UK Ltd
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Filing: 1962-06-18
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Granted: 1965-03-09
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Expires: 1982-06-18
Abstract
No abstract record available.
Inventors
- 👤 Dolphin John Robert Vernon
- 👤 Russell Leonard Bruce
- 👤 Kent Ivor James Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:03
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
LOAD-LIFTING TRUCK COMPRISING A TRUCK BODY, AN EXTENSIBLE MAST INCLUDING A FIXED FIRST MAST PORTION MOUNTED ON THE TRUCK BODY AND A SECOND MAST PORTION MOVABLE UP AND DOWN THE FIXED MAST PORTION, CARRIAGE MOVABLE UP AND DOWN THE SECOND MAST PORTION, MEANS INTERLINKING MOVEMENT OF THE CARRIAGE WITH THAT OF THE SECOND MAST PORTION SO THAT THE CARRIAGE MOVES UPWARDLY FASTER THAN THE SECOND MAST PORTION, MEANS FOR LIFTING THE SECOND MAST PORTION AND THEREBY THE CARRIAGE THROUGH SAID INTERLINKING MEANS, LOAD SUPPORTING MEANS MOUNTED ON THE CARRIAGE AND PROJECTING AWAY FROM THE MAST IN ONE DIRECTION, A MEMBER FOR APPLYING A BALANCING DOWNWARD FORCE TO THE CARRIAGE AT A POINT OFFSET FROM THE MAST ON THE OPPOSITE SIDE TO THE LOAD SUPPORTING MEAS AND MEANS
Claim 2
Dependent Claim
127 words
LOAD-LIFTING TRUCK COMPRISING A TRUCK BODY, AN EXTENSIBLE MAST INCLUDING A FIXED FIRST MAST PORTION MOUNTED ON THE TRUCK BODY AND A SECOND MAST PORTION MOVABLE UP AND DOWN THE FIXED MAST PORTION, CARRIAGE MOVABLE UP AND DOWN THE SECOND MAST PORTION, MEANS INTERLINKING MOVEMENT OF THE CARRIAGE WITH THAT OF THE SECOND MAST PORTION SO THAT THE CARRIAGE MOVES UPWARDLY FASTER THAN THE SECOND MAST PORTION, MEANS FOR LIFTING THE SECOND MAST PORTION AND THEREBY THE CARRIAGE THROUGH SAID INTERLINKING MEANS, LOAD SUPPORTING MEANS MOUNTED ON THE CARRIAGE AND PROJECTING AWAY FROM THE MAST IN ONE DIRECTION, A MEMBER FOR APPLYING A BALANCING DOWNWARD FORCE TO THE CARRIAGE AT A POINT OFFSET FROM THE MAST ON THE OPPOSITE SIDE TO THE LOAD SUPPORTING MEAS AND 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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |