Patent US3251479A successfully refreshed from Google Patents.
US3251479A
Expired / Lapsed
US
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Removable counterweight apparatus
Assignee: Caterpillar Global Mining LLC
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Filing: 1964-02-17
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Granted: 1966-05-17
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Bruno L Lonngren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:41
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN AN APPARATUS OF THE CLASS DESCRIBED HAVING A CHASSIS, A ROTATABLE MACHINERY PLATFORM MOUNTED ON SAID CHASSIS, AND A BOOM MOUNTED UPON ONE END OF SAID PLATFORM, THE COMBINATION COMPRISING: A LINK PIVOTALLY SUPPORTED UPON AN OPPOSITE END OF SAID PLATFORM AND HAVING A FREE END MOVABLE IN A VERTICAL PLANE; A COUNTERWEIGHT ADAPTED TO BE SUSPENDED FROM SAID LINK; REMOVABLE MOUNTING MEANS JOINING SAID COUNTERWEIGHT TO SAID FREE END OF SAID LINK AND BEING NORMALLY RESTRAINED AGAINST REMOVAL BY THE WEIGHT OF SAID COUNTERWEIGHT; AND ACTUABLE LIFT MEANS MOUNTED ON SAID CHASSIS AND ADAPTED WHEN ACTUATED TO SUPPORT THE WEIGHT OF SAID COUNTERWEIGHT FOR REMOVAL OF SAID MOUNTING MEANS TO FREE SAID COUNTERWEIGHT.
Claim 2
Dependent Claim
115 words
IN AN APPARATUS OF THE CLASS DESCRIBED HAVING A CHASSIS, A ROTATABLE MACHINERY PLATFORM MOUNTED ON SAID CHASSIS, AND A BOOM MOUNTED UPON ONE END OF SAID PLATFORM, THE COMBINATION COMPRISING: A LINK PIVOTALLY SUPPORTED UPON AN OPPOSITE END OF SAID PLATFORM AND HAVING A FREE END MOVABLE IN A VERTICAL PLANE; A COUNTERWEIGHT ADAPTED TO BE SUSPENDED FROM SAID LINK; REMOVABLE MOUNTING MEANS JOINING SAID COUNTERWEIGHT TO SAID FREE END OF SAID LINK AND BEING NORMALLY RESTRAINED AGAINST REMOVAL BY THE WEIGHT OF SAID COUNTERWEIGHT; AND ACTUABLE LIFT MEANS MOUNTED ON SAID CHASSIS AND ADAPTED WHEN ACTUATED TO SUPPORT THE WEIGHT OF SAID COUNTERWEIGHT FOR REMOVAL OF SAID MOUNTING MEANS TO FREE SAID COUNTERWEIGHT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |