Patent US3231120A successfully refreshed from Google Patents.
US3231120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container loading and unloading mechanism
Assignee: Dempster Systems Inc
•
Filing: 1961-08-07
•
Granted: 1966-01-25
•
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 19:09
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.
References Cited (Backward Citations)
US1243636A
Cited
US1736935A
Cited
US1838459A
Cited
US2132612A
Cited
US2810486A
Cited
US2789715A
Cited
US2963185A
Cited
US2867339A
Cited
US2805784A
Cited
US3107020A
Cited
US3049378A
Cited
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 |