Patent US3614993A successfully refreshed from Google Patents.
US3614993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic scaffolding erecting and dismantling machine
Assignee: Individual
•
Filing: 1969-10-30
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Granted: 1971-10-26
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Expires: 1989-10-30
Abstract
Abstract A MACHINE FOR ERECTING AND DISMANTLING STACKS OF COMMERCIAL SCAFFOLDING OR SHORING UNITS INCLUDES AN ADJUSTABLE OPEN-SIDED U-FRAME SUPPORTED ON FOUR DIRIGIBLE WHEELS WHICH ARE VERTICALLY ADJUSTABLE SO THE FRAME CAN AUTOMATICALLY LEVEL ITSELF AND A SEMI-AUTOMATIC ELEVATOR SYSTEM WITH MECHANICALLY INTERLOCKED LIFTING HOOKS WHICH WILL AUTOMATICALLY RAISE OR LOWER A STACK OF SCAFFOLDING UNITS BY AN INTERVAL OF ONE SCAFFOLDING UNIT WHEREBY A SCAFFOLDING UNIT MAY BE ADDED OR SUBSTRATED FROM THE BOTTOM OF THE STACK. STABILIZING WINCHES ALLOW THE STACKS TO BE ERECTED DURING WINDY CONDITIONS AND TO GREATER HEIGHTS.
Inventors
- 👤 George N Penso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:06
CPC Classifications
E; E04; E04G; E04G5/00; E04G5/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |