US3341042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator control system
Assignee: American Sugar Co
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Filing: 1966-12-16
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Granted: 1967-09-12
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Expires: 1986-12-16
Abstract
No abstract record available.
Inventors
- 👤 Victor H Carder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:01
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/06; B66F7/0625; B64; B64F; B64F1/00; B64F1/32; B64F1/322; B66F7/065; B66F7/0666; B66F7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
AN ELEVATOR FOR LOADING CARGO INTO AIRCRAFT COMPRISING: A LOWER FRAME ADAPTED TO BE SUPPORTED ON THE GROUND ADJACENT TO AN AIRCRAFT; AN UPPER FRAME HAVING CONVEYOR MEANS THEREON FOR CONVEYING CARGO IN A HORIZONTAL DIRECTION ACROSS SAID UPPER FRAME; SCISSORS LIFT ARMS EXTENDING PARALLEL TO A VERTICAL PLANE PARALLEL TO SAID HORIZONTAL DIRECTION AND INTERCONNECTING SAID FRAMES FOR SUPPORTING SAID UPPER FRAME ON SAID LOWER FRAME GENERALLY PARALLEL TO SAID LOWER FRAME WHILE PERMITTING SAID UPPER FRAME TO MOVE BETWEEN A HIGH LIFT POSITION ABOVE SAID LOWER FRAME AND A LOWERED POSITION BELOW SAID HIGH LIFT POSITION; AND, AUXILIARY SCISSORS LIFT ARMS EXTENDING PARALLEL TO A VERTICAL PLANE PERPENDICULAR TO SAID HORIZONTAL DIRECTION; LIFT MEANS FOR MOVING SAID UPPER FRAME BETWEEN SAID POSITIONS; A PAIR OF EXTANDABLE FEET MOUNTED ON SAID LOWER FRAME ON EACH SIDE OF A MEDIAN LINE THROUGH SAID LOWER FRAME PARALLEL TO SAID HORIZONTAL DIRECTION; AND A SINGLE OPERATING MEANS FOR EXTENDING THE FEET OF EACH PAIR TO TILT SAID ELEVATOR HORIZONTALLY WHEN SAID UPPER FRAME IS IN SAID HIGH LIFT POSITION.
Claim 2
Dependent Claim
177 words
AN ELEVATOR FOR LOADING CARGO INTO AIRCRAFT COMPRISING: A LOWER FRAME ADAPTED TO BE SUPPORTED ON THE GROUND ADJACENT TO AN AIRCRAFT; AN UPPER FRAME HAVING CONVEYOR MEANS THEREON FOR CONVEYING CARGO IN A HORIZONTAL DIRECTION ACROSS SAID UPPER FRAME; SCISSORS LIFT ARMS EXTENDING PARALLEL TO A VERTICAL PLANE PARALLEL TO SAID HORIZONTAL DIRECTION AND INTERCONNECTING SAID FRAMES FOR SUPPORTING SAID UPPER FRAME ON SAID LOWER FRAME GENERALLY PARALLEL TO SAID LOWER FRAME WHILE PERMITTING SAID UPPER FRAME TO MOVE BETWEEN A HIGH LIFT POSITION ABOVE SAID LOWER FRAME AND A LOWERED POSITION BELOW SAID HIGH LIFT POSITION; AND, AUXILIARY SCISSORS LIFT ARMS EXTENDING PARALLEL TO A VERTICAL PLANE PERPENDICULAR TO SAID HORIZONTAL DIRECTION; LIFT MEANS FOR MOVING SAID UPPER FRAME BETWEEN SAID POSITIONS; A PAIR OF EXTANDABLE FEET MOUNTED ON SAID LOWER FRAME ON EACH SIDE OF A MEDIAN LINE THROUGH SAID LOWER FRAME PARALLEL TO SAID HORIZONTAL DIRECTION; AND A SINGLE OPERATING MEANS FOR EXTENDING THE FEET OF EACH PAIR TO TILT SAID ELEVATOR HORIZONTALLY WHEN SAID UPPER FRAME IS IN SAID HIGH LIFT POSITION.
References Cited (Backward Citations)
US2831588A
Cited
US3164274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |