Patent US3342349A successfully refreshed from Google Patents.
US3342349A
Expired / Lapsed
US
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Mechanical handling equipment
Assignee: LAWRENCE ENGINEERING Co L
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Filing: 1965-05-25
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Granted: 1967-09-19
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Sheldon Francis Duncan
- 👤 North Charles Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:08
CPC Classifications
B; B65; B65G; B65G59/00; B65G59/02; B65G59/026; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
MECHANICAL HANDLING EQUIPMENT FOR UNLOADING PALLETS, COMPRISING ELEVATOR MEANS FOR RAISING AND LOWERING A PALLET LOADED WITH A PLURALITY OF SUPERIMPOSED LAYERS OF ARTICLES, MEANS FOR ARRESTING THE ELEVATOR MEANS WHEN THE UPPERMOST OF SAID LAYERS OF ARTICLES ON THE PALLET HAS BEEN RAISED TO A PREDETERMINED HEIGHT, CLAMPING MEANS FOR CLAMPING SAID UPPERMOST LAYER OF ARTICLES AT SAID PREDETERMINED HEIGHT, A REVERSING MECHANISM AUTOMATICALLY OPERABLE TO REACTUATE THE ELEVATOR MEANS AFTER A PREDETERMINED DELAY TO LOWER THE LOADED PALLET FOR A DISTANCE LESS THAN THE STACK HEIGHT AND SUBSEQUENTLY TO RAISE THE LOADED PALLET TO PRESENT A NEW UPPERMOST LAYER OF THE STACK FOR A REPEAT CYCLE, A DELIVERY CONVEYOR HORIZONTALLY SPACED FROM THE ELEVATOR MEANS, A CARRIAGE SUPPORTING SAID CLAMPING MEANS AT A FIXED DISTANCE THEREBELOW AND RECIPROCABLE TO CARRY THE CLAMPED UPPERMOST LAYER TO THE DELIVERY CONVEYOR FOR RELEASE THEREON, A FIXED TRACK EXTENDING FROM ABOVE THE ELEVATOR MEANS TO ABOVE THE DISCHARGE CONVEYOR, SAID CARRIAGE BEING SUPPORTED ON SAID TRACK, AND MEANS FOR RECIPROCATING THE CARRIAGE ALONG THE TRACK.
Claim 2
Dependent Claim
173 words
MECHANICAL HANDLING EQUIPMENT FOR UNLOADING PALLETS, COMPRISING ELEVATOR MEANS FOR RAISING AND LOWERING A PALLET LOADED WITH A PLURALITY OF SUPERIMPOSED LAYERS OF ARTICLES, MEANS FOR ARRESTING THE ELEVATOR MEANS WHEN THE UPPERMOST OF SAID LAYERS OF ARTICLES ON THE PALLET HAS BEEN RAISED TO A PREDETERMINED HEIGHT, CLAMPING MEANS FOR CLAMPING SAID UPPERMOST LAYER OF ARTICLES AT SAID PREDETERMINED HEIGHT, A REVERSING MECHANISM AUTOMATICALLY OPERABLE TO REACTUATE THE ELEVATOR MEANS AFTER A PREDETERMINED DELAY TO LOWER THE LOADED PALLET FOR A DISTANCE LESS THAN THE STACK HEIGHT AND SUBSEQUENTLY TO RAISE THE LOADED PALLET TO PRESENT A NEW UPPERMOST LAYER OF THE STACK FOR A REPEAT CYCLE, A DELIVERY CONVEYOR HORIZONTALLY SPACED FROM THE ELEVATOR MEANS, A CARRIAGE SUPPORTING SAID CLAMPING MEANS AT A FIXED DISTANCE THEREBELOW AND RECIPROCABLE TO CARRY THE CLAMPED UPPERMOST LAYER TO THE DELIVERY CONVEYOR FOR RELEASE THEREON, A FIXED TRACK EXTENDING FROM ABOVE THE ELEVATOR MEANS TO ABOVE THE DISCHARGE CONVEYOR, SAID CARRIAGE BEING SUPPORTED ON SAID TRACK, AND MEANS FOR RECIPROCATING THE CARRIAGE ALONG THE TRACK.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |