US3231120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container loading and unloading mechanism
Assignee: Dempster Systems Inc
•
Filing: 1961-08-07
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Granted: 1966-01-25
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 William A Herpich
- 👤 Charles R Cooley
- 👤 Georgia Trust Company Of
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:50
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/64; B60P1/6418; B60P1/6454
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN CONTAINER LOADING AND UNLOADING APPARATUS, THE COMBINATION OF A FRAME ADAPTED TO BE MOUNTED ON A VEHICLE, A CARRIAGE HAVING MEANS FOR DETACHABLY ENGAGING AND MOVING A CONTAINER SUPPORTED IN GUIDED RELATION ON THE FRAME, MEANS MOUNTING THE CARRIAGE ON THE FRAME BELOW THE CONTAINER SUPPORTING SURFACE THEREOF IN GUIDED RELATION WITH SAID FRAME, A SCREW BOX INCLUDING TURNNIONS MOUNTING SAID SCREW BOX ON THE CARRIAGE AND ADAPTED FOR MOVEMENT WITH RESPECT THERETO, A ROTARY MEMBER EXTENDING LONGITUDINALLY OF THE FRAME AND CONNECTED AT OPPOSITE END PORTIONS THEREWITH, DRIVE MEANS FOR SAID ROTARY MEMBER, AND MEANS FORMING A THREADED CONNECTION BETWEEN SAID ROTARY MEMBER AND THE SCREW BOX FOR CAUSING MOVEMENT OF THE CARRIAGE LENGTHWISE OF THE FRAME UPON OPERATION OF THE ROTARY MEMBER.
Claim 2
Dependent Claim
125 words
IN CONTAINER LOADING AND UNLOADING APPARATUS, THE COMBINATION OF A FRAME ADAPTED TO BE MOUNTED ON A VEHICLE, A CARRIAGE HAVING MEANS FOR DETACHABLY ENGAGING AND MOVING A CONTAINER SUPPORTED IN GUIDED RELATION ON THE FRAME, MEANS MOUNTING THE CARRIAGE ON THE FRAME BELOW THE CONTAINER SUPPORTING SURFACE THEREOF IN GUIDED RELATION WITH SAID FRAME, A SCREW BOX INCLUDING TURNNIONS MOUNTING SAID SCREW BOX ON THE CARRIAGE AND ADAPTED FOR MOVEMENT WITH RESPECT THERETO, A ROTARY MEMBER EXTENDING LONGITUDINALLY OF THE FRAME AND CONNECTED AT OPPOSITE END PORTIONS THEREWITH, DRIVE MEANS FOR SAID ROTARY MEMBER, AND MEANS FORMING A THREADED CONNECTION BETWEEN SAID ROTARY MEMBER AND THE SCREW BOX FOR CAUSING MOVEMENT OF THE CARRIAGE LENGTHWISE OF THE FRAME UPON OPERATION OF THE ROTARY MEMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |