Patent US3109544A successfully refreshed from Google Patents.
US3109544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for unloading articles
Assignee: Individual
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Filing: 1960-07-11
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Granted: 1963-11-05
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Robert K Learmont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:14
CPC Classifications
B; B60; B60P; B60P3/00; B60P1/00; B60P1/48; B60P3/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
236 words
AN APPARATUS FOR UNLOADING ARTICLES FROM A TRAILER HAVING A PAIR OF SIDE WALLS, A FLOOR AND AN OPEN REAR END, COMPRISING A TRACK SECURED TO EACH SIDE WALL OF THE TRAILER AND EXTENDING LONGITUDINALLY THEREOF, A MOVABLE TRACK SECTION ALIGNED WITH EACH TRACK AND EXTENDING FROM THE REAR END OF THE TRACK TO ADJACENT THE OPEN END OF THE TRAILER, A CARRIAGE EXTENDING TRANSVERSELY OF THE TRAILER AND DISPOSED TO RIDE ON THE TRACKS AND THE TRACK SECTIONS AND ADAPTED TO REMOVABLY SUPPORT AN ARTICLE, MEANS FOR PIVOTALLY CONNECTING EACH TRACK SECTION TO THE TRAILER, DRIVE MEANS CONNECTED TO THE LAST NAMED MEANS FOR PIVOTING THE SAME TO MOVE THE TRACK SECTIONS DOWNWARDLY AND OUTWARDLY OF THE OPEN END OF THE TRAILER TO A LEVEL WHERE THE ARTICLE CAN BE CONVENIENTLY REMOVED FROM THE CARRIAGE, A FIRST STOP SECURED TO ONE OF SAID TRACK SECTIONS, A SECOND STOP PIVOTALLY CONNECTED TO ONE OF SAID TRACK SECTIONS AND LOCATED FORWARDLY OF SAID FIRST STOP, SAID SECOND STOP ADAPTED TO BE PIVOTED TO AN UNOBSTRUCTING POSITION BY THE CARRIAGE AS THE CARRIAGE IS MOVED REARWARDLY ONTO THE TRACK SECTIONS, AND RESILIENT MEANS CONNECTED TO SAID SECOND STOP FOR URGING THE SECOND STOP TO AN OBSTRUCTING POSITION, SAID CARRIAGE BEING HELD BETWEEN THE FIRST AND SECOND STOPS TO PREVENT MOVEMENT OF THE CARRIAGE ON THE TRACK SECTIONS AS THE TRACK SECTIONS ARE MOVED WITH RESPECT TO THE TRAILER.
Claim 2
Independent Claim
236 words
AN APPARATUS FOR UNLOADING ARTICLES FROM A TRAILER HAVING A PAIR OF SIDE WALLS, A FLOOR AND AN OPEN REAR END, COMPRISING A TRACK SECURED TO EACH SIDE WALL OF THE TRAILER AND EXTENDING LONGITUDINALLY THEREOF, A MOVABLE TRACK SECTION ALIGNED WITH EACH TRACK AND EXTENDING FROM THE REAR END OF THE TRACK TO ADJACENT THE OPEN END OF THE TRAILER, A CARRIAGE EXTENDING TRANSVERSELY OF THE TRAILER AND DISPOSED TO RIDE ON THE TRACKS AND THE TRACK SECTIONS AND ADAPTED TO REMOVABLY SUPPORT AN ARTICLE, MEANS FOR PIVOTALLY CONNECTING EACH TRACK SECTION TO THE TRAILER, DRIVE MEANS CONNECTED TO THE LAST NAMED MEANS FOR PIVOTING THE SAME TO MOVE THE TRACK SECTIONS DOWNWARDLY AND OUTWARDLY OF THE OPEN END OF THE TRAILER TO A LEVEL WHERE THE ARTICLE CAN BE CONVENIENTLY REMOVED FROM THE CARRIAGE, A FIRST STOP SECURED TO ONE OF SAID TRACK SECTIONS, A SECOND STOP PIVOTALLY CONNECTED TO ONE OF SAID TRACK SECTIONS AND LOCATED FORWARDLY OF SAID FIRST STOP, SAID SECOND STOP ADAPTED TO BE PIVOTED TO AN UNOBSTRUCTING POSITION BY THE CARRIAGE AS THE CARRIAGE IS MOVED REARWARDLY ONTO THE TRACK SECTIONS, AND RESILIENT MEANS CONNECTED TO SAID SECOND STOP FOR URGING THE SECOND STOP TO AN OBSTRUCTING POSITION, SAID CARRIAGE BEING HELD BETWEEN THE FIRST AND SECOND STOPS TO PREVENT MOVEMENT OF THE CARRIAGE ON THE TRACK SECTIONS AS THE TRACK SECTIONS ARE MOVED WITH RESPECT TO THE TRAILER.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |