US3215292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material handling apparatus-front lift type
Assignee: Unisys Corp
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Filing: 1964-09-14
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Granted: 1965-11-02
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Lawrence M Halls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:35
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
A MATERIAL HANDLING APPARATUS FOR ATTACHMENT TO A TRACTOR HAVING A FRAME INCLUDING AN UPPER SUPPORT STRUCTURE AND A LOWER SUPPORT STRUCTURE (A) A PAIR OF LOAD ARMS (B) SAID LOAD ARMS SUPPORTING AT THEIR FORWARD END A MATERIAL HANDLING MEMBER (C) EACH OF SAID LOAD ARMS HAVING CONNECTED AT ITS REAR END A DOWNWARDLY PROJECTING MEMBER (D) EACH OF SAID DOWNWARDLY PROJECTING MEMBERS HAVING ONE END LOWER THAN ITS OTHER END AT ALL TIMES DURING OPERATION OF SAID APPARATUS (E) EACH OF SAID DOWNWARDLY, PROJECTING MEMBERS HAVING PIVOTALLY CONNECTED TO SAID LOWER END A FIRST LINK EXTENDING FORWARDLY THEREOF FOR PIVOTAL CONNECTION TO SAID LOWER SUPPORT STRUCTURE (F) EACH OF SAID LOAD ARMS HAVING PIVOTALLY CONNECTED IN THE VICINITY OF SAID REAR END OF SAID ARMS A SECOND LINK EXTENDING FORWARDLY THEREOF FOR PIVOTAL CONNECTION TO SAID UPPER SUPPORT STRUCTURE (G) SAID FIRST LINKS BEING POSITIONED AT ALL TIMES BELOW SAID LOAD ARMS DURING OPERATIONS OF SAID APPARATUS (H) SAID SECOND LINKS BEING POSITIONED ABOVE SAID LOAD ARMS WHEN SAID MATERIAL HANDLING MEMBER IS IN LOAD POSITION AND BELOW SAID LOAD ARMS WHEN SAID MATERIAL HANDLING MEMBER IS IN UNLOAD POSITION (I) AND MEANS ON SAID FRAME CONNECTED TO SAID MATERIAL HANDLING APPARATUS FOR VERTICALLY RAISING AND LOWERING SAID LOAD ARMS AND FOR OADING AND UNLOADING SAID MATERIAL HANDLING MEMBER.
Claim 2
Dependent Claim
221 words
A MATERIAL HANDLING APPARATUS FOR ATTACHMENT TO A TRACTOR HAVING A FRAME INCLUDING AN UPPER SUPPORT STRUCTURE AND A LOWER SUPPORT STRUCTURE (A) A PAIR OF LOAD ARMS (B) SAID LOAD ARMS SUPPORTING AT THEIR FORWARD END A MATERIAL HANDLING MEMBER (C) EACH OF SAID LOAD ARMS HAVING CONNECTED AT ITS REAR END A DOWNWARDLY PROJECTING MEMBER (D) EACH OF SAID DOWNWARDLY PROJECTING MEMBERS HAVING ONE END LOWER THAN ITS OTHER END AT ALL TIMES DURING OPERATION OF SAID APPARATUS (E) EACH OF SAID DOWNWARDLY, PROJECTING MEMBERS HAVING PIVOTALLY CONNECTED TO SAID LOWER END A FIRST LINK EXTENDING FORWARDLY THEREOF FOR PIVOTAL CONNECTION TO SAID LOWER SUPPORT STRUCTURE (F) EACH OF SAID LOAD ARMS HAVING PIVOTALLY CONNECTED IN THE VICINITY OF SAID REAR END OF SAID ARMS A SECOND LINK EXTENDING FORWARDLY THEREOF FOR PIVOTAL CONNECTION TO SAID UPPER SUPPORT STRUCTURE (G) SAID FIRST LINKS BEING POSITIONED AT ALL TIMES BELOW SAID LOAD ARMS DURING OPERATIONS OF SAID APPARATUS (H) SAID SECOND LINKS BEING POSITIONED ABOVE SAID LOAD ARMS WHEN SAID MATERIAL HANDLING MEMBER IS IN LOAD POSITION AND BELOW SAID LOAD ARMS WHEN SAID MATERIAL HANDLING MEMBER IS IN UNLOAD POSITION (I) AND MEANS ON SAID FRAME CONNECTED TO SAID MATERIAL HANDLING APPARATUS FOR VERTICALLY RAISING AND LOWERING SAID LOAD ARMS AND FOR OADING AND UNLOADING SAID MATERIAL HANDLING MEMBER.
References Cited (Backward Citations)
US2980271A
Cited
US3024927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |