Patent US3140857A successfully refreshed from Google Patents.
US3140857A
Expired / Lapsed
US
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Method and apparatus for handling a load
Assignee: Manitowoc Engineering Co
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Filing: 1961-08-02
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Granted: 1964-07-14
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Edward B Nickles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:37
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/66; B66C19/00; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364; B66C2700/0371
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN COMBINATION WITH A PAIR OF MOBILE CRANE UNITS EACH OF WHICH IS PROVIDED WITH AN UPPER WORKS HAVING A HOISTING DRUM, ELONGATED BOOM STRUCTURE PIVOTALLY MOUNTED TO THE UPPER WORKS AND EXTENDING OUTWARDLY THEREFROM AND TERMINATING IN A BOOM POINT WHEREAT THERE IS DISPOSED A BOOM POINT SHEAVE, AND A BRIDLE ARRANGEMENT FOR MOVING AND NORMALLY SUPPORTING THE BOOM STRUCTURE WITH THE BRIDLE ARRANGEMENT BEING USUALLY IN A TENSIONED CONDITION; APPARATUS FOR ENABLING THE CRANE UNITS TO HANDLE A LOAD GREATER THAN THE RATED CAPACITY THEREOF, SAID APPARATUS COMPRISING STRUCTURE CARRIED ADJACENT THE BOOM POINT OF EACH OF THE BOOM STRUCTURES FOR ENABLING THE BOOM STRUCTURES TO SUPPORT EACH OTHER ADJACENT THE BOOM POINTS THEREOF AND TO PLACE SAID BRIDLE ARRANGEMENTS IN A SLACKENED SUSTANTIALLY NON-TENSIONED CONDITION WITH THE BOOM STRUCTURES EXTENDING GENERALLY UPWARDLY FROM THE
Claim 2
Dependent Claim
137 words
IN COMBINATION WITH A PAIR OF MOBILE CRANE UNITS EACH OF WHICH IS PROVIDED WITH AN UPPER WORKS HAVING A HOISTING DRUM, ELONGATED BOOM STRUCTURE PIVOTALLY MOUNTED TO THE UPPER WORKS AND EXTENDING OUTWARDLY THEREFROM AND TERMINATING IN A BOOM POINT WHEREAT THERE IS DISPOSED A BOOM POINT SHEAVE, AND A BRIDLE ARRANGEMENT FOR MOVING AND NORMALLY SUPPORTING THE BOOM STRUCTURE WITH THE BRIDLE ARRANGEMENT BEING USUALLY IN A TENSIONED CONDITION; APPARATUS FOR ENABLING THE CRANE UNITS TO HANDLE A LOAD GREATER THAN THE RATED CAPACITY THEREOF, SAID APPARATUS COMPRISING STRUCTURE CARRIED ADJACENT THE BOOM POINT OF EACH OF THE BOOM STRUCTURES FOR ENABLING THE BOOM STRUCTURES TO SUPPORT EACH OTHER ADJACENT THE BOOM POINTS THEREOF AND TO PLACE SAID BRIDLE ARRANGEMENTS IN A SLACKENED SUSTANTIALLY NON-TENSIONED CONDITION WITH THE BOOM STRUCTURES EXTENDING GENERALLY UPWARDLY FROM THE
References Cited (Backward Citations)
US751205A
Cited
US2347115A
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US2356800A
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US2421913A
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US2556948A
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US2747890A
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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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |