Patent US3149730A successfully refreshed from Google Patents.
US3149730A
Expired / Lapsed
US
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Convertible crane
Assignee: Caterpillar Global Mining LLC
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Filing: 1962-06-08
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Granted: 1964-09-22
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Expires: 1982-06-08
Abstract
No abstract record available.
Inventors
- 👤 George W Mork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:18
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/26; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364; B66C2700/0371
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A CRANE, THE COMBINATION OF: A MAIN SUPPORTING FRAME; A SECTIONALIZED BOOM PIVOTALLY SUPPORTED BY SAID FRAME, SAID BOOM BEING ADAPTED TO BE RAISED AND LOWERED BETWEEN FORWARDLY INCLINED AND VERTICAL POSITIONS, AND INCLUDING: MAIN-BOOM AND BOOM-POINT SECTIONS, A FIRST CONNECTING MEANS FOR DETACHABLY INTERCONNECTING SAID MAIN-BOOM AND BOOM-POINT SECTIONS AND ALIGNING SAID SECTIONS APPROXIMATELY ON A COMMON CENTRAL LONGITUDINAL AXIS; A JIB ADAPTED TO BE PIVOTALLY SUPPORTED IN A FORWARDLY INCLINED POSITION BETWEEN SAID MAIN-BOOM AND SAID BOOMPOINT SECTIONS; ADAPTER MEANS DETACHABLY INTERPOSED BETWEEN SAID MAIN AND BOOM-POINT SECTIONS, AND INCLUDING: SECOND CONNECTING MEANS FOR DETACHABLY CONNECTING THE ADAPTER MEANS TO THE FIRST CONNECTING MEANS, DIFFERENTIAL SPACER MEANS FOR CANTING SAID BOOM-POINT SECTION REARWARDLY RELATIVE TO SAID MAIN-BOOM SECTION AND LONGITUDINAL AXIS THEREOF WHEN SAID AXIS IS VERTICAL, AND THIRD CONNECTING MEANS FOR DETACHABLY CONNECTING SAID JIB TO SAID ADAPTER MEANS IN A FORWARDLY EXTENDED POSITION RELATIVE TO SAID MAIN-BOOM SECTION.
Claim 2
Dependent Claim
153 words
IN A CRANE, THE COMBINATION OF: A MAIN SUPPORTING FRAME; A SECTIONALIZED BOOM PIVOTALLY SUPPORTED BY SAID FRAME, SAID BOOM BEING ADAPTED TO BE RAISED AND LOWERED BETWEEN FORWARDLY INCLINED AND VERTICAL POSITIONS, AND INCLUDING: MAIN-BOOM AND BOOM-POINT SECTIONS, A FIRST CONNECTING MEANS FOR DETACHABLY INTERCONNECTING SAID MAIN-BOOM AND BOOM-POINT SECTIONS AND ALIGNING SAID SECTIONS APPROXIMATELY ON A COMMON CENTRAL LONGITUDINAL AXIS; A JIB ADAPTED TO BE PIVOTALLY SUPPORTED IN A FORWARDLY INCLINED POSITION BETWEEN SAID MAIN-BOOM AND SAID BOOMPOINT SECTIONS; ADAPTER MEANS DETACHABLY INTERPOSED BETWEEN SAID MAIN AND BOOM-POINT SECTIONS, AND INCLUDING: SECOND CONNECTING MEANS FOR DETACHABLY CONNECTING THE ADAPTER MEANS TO THE FIRST CONNECTING MEANS, DIFFERENTIAL SPACER MEANS FOR CANTING SAID BOOM-POINT SECTION REARWARDLY RELATIVE TO SAID MAIN-BOOM SECTION AND LONGITUDINAL AXIS THEREOF WHEN SAID AXIS IS VERTICAL, AND THIRD CONNECTING MEANS FOR DETACHABLY CONNECTING SAID JIB TO SAID ADAPTER MEANS IN A FORWARDLY EXTENDED POSITION RELATIVE TO SAID MAIN-BOOM SECTION.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |