US3348702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipurpose crane
Assignee: SIEVERT ELECTRIC CO
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Filing: 1966-04-08
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Granted: 1967-10-24
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Expires: 1986-04-08
Abstract
No abstract record available.
Inventors
- 👤 Carl G Wennerstrom
- 👤 Paul M Sievert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:22
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/02; B66C23/00; B66C23/18; B66C23/36; B66C23/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
253 words
A CRANE TO BE MOUNTED TO A PLATFORM FOR HANDLING AN ELONGATED WORK OBJECT WITHOUT HAZARD OF THE WORK OBJECT STRIKING OTHER OBJECTS, WHICH CRANE COMPRISES THE COMBINATION OF: A ROTATBLE BASE MOUNTED TO THE PLATFORM; A CABLE DRUM MOUNTED BY MEANS OF A SHAFT ABOVE THE BASE; AN ARTICULATE BOOM HAVING ONE HINGE, A FREE END, AND AN END PIVOTALLY MOUNTED TO THE BASE; A HYDRAULIC MEANS, EXPANSIBLE IN ELONGATION, HAVING A FIRST END PIVOTALLY MOUNTED TO THE BASE AND A SECOND END PIVOTALLY MOUNTED TO THE HINGED BOOM SECTION, SUCH THAT MOVEMENT OF THE FREE END OF THE BOOM RELATIVE TO THE PIVOTALLY MOUNTED END IS RESPONSIVE TO EXPANSION OF THE HYDRAULIC MEANS; A SHEAVE MOUNTED TO THE FREE END OF THE BOOM; A CABLE OPERATIVELY POSITIONED WITH RESPECT TO THE CABLE DRUM AND THE SHEAVE, AND TO WHICH THE WORK OBJECT IS FASTENED; AND A CRADLE MEANS MOVABLY MOUNTED TO THE HINGED BOOM SECTION AND ADAPTED TO BE OPERATIVELY POSITIONED WITH RESPECT TO THE FREE END OF THE BOOM TO ENGAGE THE WORK OBJECT AND TO HOLD IT IN A RELATIVELY FIXED POSITION WITH RESPECT TO THE HINGED BOOM SECTION, SUCH POSITION BEING RESPONSIVE TO TRANSLATION MOVEMENT OF THE CRADLE MEANS ALONG THE HINGED BOOM SECTION; WHEREBY THE ELONGATED WORK OBJECT MAY BE POSITIONED WITH RESPECT TO THE HINGED BOOM SECTION IN SUCH POSITION AS MAY BE APPROPRIATE FOR HANDLING THE ELONGATED WORK OBJECT BY RELATIVE MOVEMENT OF THE CRANE ELEMENTS WITHOUT HAZARD OF THE WORK OBJECT STRIKING ANOTHER OBJECT.
Claim 2
Dependent Claim
253 words
A CRANE TO BE MOUNTED TO A PLATFORM FOR HANDLING AN ELONGATED WORK OBJECT WITHOUT HAZARD OF THE WORK OBJECT STRIKING OTHER OBJECTS, WHICH CRANE COMPRISES THE COMBINATION OF: A ROTATBLE BASE MOUNTED TO THE PLATFORM; A CABLE DRUM MOUNTED BY MEANS OF A SHAFT ABOVE THE BASE; AN ARTICULATE BOOM HAVING ONE HINGE, A FREE END, AND AN END PIVOTALLY MOUNTED TO THE BASE; A HYDRAULIC MEANS, EXPANSIBLE IN ELONGATION, HAVING A FIRST END PIVOTALLY MOUNTED TO THE BASE AND A SECOND END PIVOTALLY MOUNTED TO THE HINGED BOOM SECTION, SUCH THAT MOVEMENT OF THE FREE END OF THE BOOM RELATIVE TO THE PIVOTALLY MOUNTED END IS RESPONSIVE TO EXPANSION OF THE HYDRAULIC MEANS; A SHEAVE MOUNTED TO THE FREE END OF THE BOOM; A CABLE OPERATIVELY POSITIONED WITH RESPECT TO THE CABLE DRUM AND THE SHEAVE, AND TO WHICH THE WORK OBJECT IS FASTENED; AND A CRADLE MEANS MOVABLY MOUNTED TO THE HINGED BOOM SECTION AND ADAPTED TO BE OPERATIVELY POSITIONED WITH RESPECT TO THE FREE END OF THE BOOM TO ENGAGE THE WORK OBJECT AND TO HOLD IT IN A RELATIVELY FIXED POSITION WITH RESPECT TO THE HINGED BOOM SECTION, SUCH POSITION BEING RESPONSIVE TO TRANSLATION MOVEMENT OF THE CRADLE MEANS ALONG THE HINGED BOOM SECTION; WHEREBY THE ELONGATED WORK OBJECT MAY BE POSITIONED WITH RESPECT TO THE HINGED BOOM SECTION IN SUCH POSITION AS MAY BE APPROPRIATE FOR HANDLING THE ELONGATED WORK OBJECT BY RELATIVE MOVEMENT OF THE CRANE ELEMENTS WITHOUT HAZARD OF THE WORK OBJECT STRIKING ANOTHER OBJECT.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |