US3104748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor door and loading platform
Assignee: —
•
Filing: —
•
Granted: 1963-09-24
•
Expires: 1980-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:36
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/28; B65G69/2805; B65G69/2811; B65G69/2817; B65G13/00; B65G13/11; B65G13/12; B65G69/2864; B65G69/287; B65G69/2876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A DEVICE FOR USE IN CONNECTION WITH A WALL HAVING AN APERTURE THEREIN AND A CONVEYOR HAVING ONE TERMINATION ON A FIRST SIDE OF WALL COMPRISING: A PLANAR DOOR MEMBER HAVING A SHAPE SUBSTANTIALLY THAT OF SAID APERTURE AND BEING HINGED ABOUT A HORIZONTAL LINE ON THE LOWER EDGE OF SAID APERTURE SO AS TO BE DISPOSABLE IN A FIRST, CLOSED, POSITION WHEREIN IT IS IN A VERTICAL POSITION AND CLOSES OFF SAID APERTURE, OR A SECOND, OPEN, POSITION, WHEREIN IT IS INCLINED WITH RESPECT TO THE VERTICAL; A PLATFORM HINGED TO THE END OF WALL SO AS TO CREATE A HORIZONTAL WHICH IS HINGED TO SAID WALL SO AS TO CREATE A HORIZONTAL AXIS OF ROTATION FOR THE PLATFORM; AND MEANS FOR RETAINING SAID PLATFORM AS A LINEAR EXTENSION OF SAID DOOR WHEN THE DOOR IS IN ITS CLOSED POSITION, AND FOR SUPPORTING SAID PLATFORM IN A HORIZONTAL POSITION WHEN SAID DOOR IS IN AN OPENED POSITION.
Claim 2
Independent Claim
158 words
A DEVICE FOR USE IN CONNECTION WITH A WALL HAVING AN APERTURE THEREIN AND A CONVEYOR HAVING ONE TERMINATION ON A FIRST SIDE OF WALL COMPRISING: A PLANAR DOOR MEMBER HAVING A SHAPE SUBSTANTIALLY THAT OF SAID APERTURE AND BEING HINGED ABOUT A HORIZONTAL LINE ON THE LOWER EDGE OF SAID APERTURE SO AS TO BE DISPOSABLE IN A FIRST, CLOSED, POSITION WHEREIN IT IS IN A VERTICAL POSITION AND CLOSES OFF SAID APERTURE, OR A SECOND, OPEN, POSITION, WHEREIN IT IS INCLINED WITH RESPECT TO THE VERTICAL; A PLATFORM HINGED TO THE END OF WALL SO AS TO CREATE A HORIZONTAL WHICH IS HINGED TO SAID WALL SO AS TO CREATE A HORIZONTAL AXIS OF ROTATION FOR THE PLATFORM; AND MEANS FOR RETAINING SAID PLATFORM AS A LINEAR EXTENSION OF SAID DOOR WHEN THE DOOR IS IN ITS CLOSED POSITION, AND FOR SUPPORTING SAID PLATFORM IN A HORIZONTAL POSITION WHEN SAID DOOR IS IN AN OPENED POSITION.
References Cited (Backward Citations)
US2904196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |