US3084908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dump wagon hoist
Assignee: Sioux Steel Co
•
Filing: 1960-02-01
•
Granted: 1963-04-09
•
Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Iven W Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:51
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/16; B60P1/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
IN A DUMP WAGON HOIST, A PAIR OF JACK-KNIFE LEVERS PIVOTED TOGETHER AT A PIVOT POINT TO FORM A JACK-KNIFE LEVER UNIT AND HAVING OPERATIVE ENDS ADAPTED TO BE EXTENDED IN RELATION TO EACH OTHER, AND AN EXTENSIBLE UNIT FOR EFFECTING SUCH EXTENSION INTERPOSED BETWEEN ONE END OF SAID JACKKNIFE LEVER UNIT AND OPERATIVELY CONNECTED AT ITS OTHER END TO ONE LEVER OF THE UNIT, SAID OPERATIVE CONNECTION COMPRISING A CURVED TRACK AND A ROLLER MOVABLE THEREALONG AND CARRIED BY THE EXTENDING END OF SAID EXTENSIBLE UNIT TO EFFECT FIRST A PIVOTING ACTION BETWEEN SAID EXTENSIBLE UNIT AND SAID ONE LEVER AT THE END OF SAID CURVED TRACK CLOSEST TO THE PIVOT POINT OF SAID LEVERS, AND THEN A GRADUAL FREE ROLLING OF SAID ROLLER ALONG SAID TRACK TO THE OTHER END THEREOF AS SAID EXTENSIBLE UNIT IS PROGRESSIVELY EXTENDED.
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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |