US3204780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhanging trolley for cranes
Assignee: Harnischfeger Corp
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Filing: 1964-12-17
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Granted: 1965-09-07
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Expires: 1984-12-17
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Holt
- 👤 Alexander V Kore
- 👤 Dechantsreiter Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:52
CPC Classifications
B; B66; B66C; B66C7/00; B66C17/00; B66C2700/00; B66C2700/01; B66C2700/03; B66C2700/0321; B66C2700/0328; B66C2700/035
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A CRANE COMPRISING; TWO PARALLEL CROSS GIRDERS; RAIL MEANS ON EACH GIRDER, AN INVERTED RACK ON EACH GIRDER IN PARALLED ALIGNMENT WITH THE RAIL MEANS THEREOF; A TROLLEY ASSEMBLY ADAPTED FOR TRANSLATION MOVEMENT RELATIVE TO AND FOR OVERHANGING EXTENSION BEYOND EITHER END OF THE GIRDERS; TWO SETS OF THREE WHEELS EACH, EACH SET OF THREE WHEELS BEING JOURNALLED ON THE TROLLEY ASSEMBLY AND MOUNTED IN ENGAGEMENT WITH THE CORRESPONDING RAIL MEANS, THE OUTER WHEEL OF EACH SET EXTENDING BEYOND SAID GIRDERS WHEN SAID ASSEMBLY EXTENDS BEYOND THE CORRESPONDING END, MEANS FOR PREVENTING TILT OF SAID ASSEMBLY WHEN IN SAID EXTENDED OVERHANGING POSITION, AND PINION DRIVE MEANS ON EITHER SIDE OF THE TROLLEY ASSEMBLY AND INTERMESHING WITH THE CORRESPONDING INVERTED RACK.
References Cited (Backward Citations)
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US2700345A
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US3033152A
Cited
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |