US3178048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable elevator
Assignee: Individual
•
Filing: 1962-03-19
•
Granted: 1965-04-13
•
Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Howard R Bergman
- 👤 Charles H Bergman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:39
CPC Classifications
B; B66; B66B; B66B9/00; B66B9/16; B66F; B66F9/00; B66F9/02; Y; Y10; Y10S; Y10S187/00; Y10S187/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PORTABLE ELEVATOR COMPRISING A WHEELED BASE, SAID BASE INCLUDING A SWIVEL WHEEL STRUCTURE AND A PAIR OF FIXED DIRECTION WHEELS, A COLUMN PIVOTABLY SECURED AT ONE END OF THE BASE, SAID COLUMN BEING PIVOTABLE ABOUT AN AXIS SUBSTANTIALLY PERPENDICULAR TO THE HORIZONTAL PLANE AND PIVOTABLE ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO THE HORIZONTAL PLANE, A LOAD CARRYING STRUCTURE MOVABLY MOUNTED ON SAID COLUMN FOR UP AND DOWN MOVEMENT, AND POWER MEANS MOUNTED ON SAID COLUMN ADJACENT SAID BASE FOR DRIVING SAID LOAD CARRYING STRUCTURE, SAID COLUMN BEING PIVOTABLE BETWEEN THE PAIR OF FIXED DIRECTION WHEELS IN A POSITION SUBSTANTIALLY PARALLEL TO THE PLANE OF THE BASE WITH THE LOAD CARRYING STRUCTURE AND POWER MEANS BEING SPACED FROM THE BASE AND THE SWIVEL WHEEL STRUCTURE BEING LIFTED OFF THE GROUND WHEREBY THE ENTIRE PORTABLE ELEVATOR STRUCTURE MAY BE TOWED BY A VEHICLE.
Claim 2
Dependent Claim
142 words
A PORTABLE ELEVATOR COMPRISING A WHEELED BASE, SAID BASE INCLUDING A SWIVEL WHEEL STRUCTURE AND A PAIR OF FIXED DIRECTION WHEELS, A COLUMN PIVOTABLY SECURED AT ONE END OF THE BASE, SAID COLUMN BEING PIVOTABLE ABOUT AN AXIS SUBSTANTIALLY PERPENDICULAR TO THE HORIZONTAL PLANE AND PIVOTABLE ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO THE HORIZONTAL PLANE, A LOAD CARRYING STRUCTURE MOVABLY MOUNTED ON SAID COLUMN FOR UP AND DOWN MOVEMENT, AND POWER MEANS MOUNTED ON SAID COLUMN ADJACENT SAID BASE FOR DRIVING SAID LOAD CARRYING STRUCTURE, SAID COLUMN BEING PIVOTABLE BETWEEN THE PAIR OF FIXED DIRECTION WHEELS IN A POSITION SUBSTANTIALLY PARALLEL TO THE PLANE OF THE BASE WITH THE LOAD CARRYING STRUCTURE AND POWER MEANS BEING SPACED FROM THE BASE AND THE SWIVEL WHEEL STRUCTURE BEING LIFTED OFF THE GROUND WHEREBY THE ENTIRE PORTABLE ELEVATOR STRUCTURE MAY BE TOWED BY A VEHICLE.
References Cited (Backward Citations)
US440045A
Cited
US1183960A
Cited
US1481002A
Cited
US2258918A
Cited
US2582548A
Cited
US2531346A
Cited
US2867241A
Cited
CH345998A
Cited
US3003584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |