US3078810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dragline system
Assignee: SI Handling Systems Inc
•
Filing: 1961-09-08
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Granted: 1963-02-26
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Expires: 1981-09-08
Abstract
No abstract record available.
Inventors
- 👤 Bradt Lynn
- 👤 John G Dorrance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:03
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/34; B65G47/46; B65G47/48; B65G47/482
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A DRAGLINE SYSTEM COMPRISING A FIRST MEANS DEFINING A MAIN SLOT, A SECOND MEANS DEFINING A SHUNT SLOT INTERSECTING SAID MAIN SLOT AT AN ACUTE ANGLE WITH RESPECT TO THE CENTER LINE OF SAID MAIN SLOT, AN ABUTMENT FIXEDLY SECURED WITH RESPECT TO SAID FIRST MEANS, SAID ABUTMENT HAVING A CAM SURFACE THEREON, A TRUCK HAVING A TOW PIN, A PORTION OF SAID PIN BEING IN SAID MAIN SLOT, AND A TRIP ROD ON SAID TRUCK TRAVERSING A PATH INTERSECTING SAID ABUTMENT SO AS TO HAVE ENGAGEMENT WITH SAID CAM SURFACE AND DEVELOP A FORCE IN A DIRECTION AND OF A MAGNITUDE TO CAUSE
Claim 2
Dependent Claim
105 words
IN A DRAGLINE SYSTEM COMPRISING A FIRST MEANS DEFINING A MAIN SLOT, A SECOND MEANS DEFINING A SHUNT SLOT INTERSECTING SAID MAIN SLOT AT AN ACUTE ANGLE WITH RESPECT TO THE CENTER LINE OF SAID MAIN SLOT, AN ABUTMENT FIXEDLY SECURED WITH RESPECT TO SAID FIRST MEANS, SAID ABUTMENT HAVING A CAM SURFACE THEREON, A TRUCK HAVING A TOW PIN, A PORTION OF SAID PIN BEING IN SAID MAIN SLOT, AND A TRIP ROD ON SAID TRUCK TRAVERSING A PATH INTERSECTING SAID ABUTMENT SO AS TO HAVE ENGAGEMENT WITH SAID CAM SURFACE AND DEVELOP A FORCE IN A DIRECTION AND OF A MAGNITUDE TO CAUSE
References Cited (Backward Citations)
US1124268A
Cited
US2936718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |