US3232375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled scaffold
Assignee: Individual
•
Filing: 1964-03-13
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Granted: 1966-02-01
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Expires: 1984-03-13
Abstract
No abstract record available.
Inventors
- 👤 George T Warthen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:20
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/24; E04G5/00; E04G2001/242; E04G2001/244
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A SELF-PROPELLED SCAFFOLD COMPRISING, IN COMBINATION, A NORMALLY HORIZONTAL DECK, A PAIR OF VERTICAL REAR SUPPORTING STANDARDS AND A PAIR OF FRONT SUPPORTING STANDARDS FOR SAID DECK, A SWIVEL MOUNTED CASTER WHEEL AT THE LOWER END OF EACH STANDARD, TRANSVERSE RUNGS CONNECTING THE STANDARDS OF SAID REAR SUPPORTING PAIR OF STANDARDS, A TELESCOPIC FRAME MEMBER INCLUDING A PAIR OF SPACED NORMALLY VERTICAL UPPER CHANNEL MEMBERS AND A TELESCOPING PAIR OF NORMALLY VERTICAL LOWER CHANNEL MEMBERS, A TRANSVERSE CHANNEL MEMBER SECURED BETWEEN THE LOWER ENDS OF SAID PAIR OF UPPER CHANNEL MEMBERS AND ENGAGING AROUND ONE OF SAID RUNGS, A SECOND TRANSVERSE CHANNEL MEMBER EXTENDING BETWEEN THE UPPER ENDS OF SAID UPPER CHANNEL MEMBERS, HOOK MEANS CARRIED BY SAID SECOND TRANSVERSE CHANNEL MEMBER ENGAGING ANOTHER ONE OF SAID RUNGS, SPRING MEANS BIASING SAID LOWER VERTICAL CHANNEL MEMBERS DOWNWARDLY WITH RESPECT TO SAID UPPER CHANNEL MEMBERS, A MOTOR SUPPORT CARRIED BY SAID PAIR OF LOWER CHANNEL MEMBERS ADJACENT THEIR UPPER ENDS, AN AXLE EXTENDING BETWEEN THE LOWER ENDS OF SAID LOWER PAIR OF CHANNEL MEMBERS, A DRIVE WHEEL MOUNTED ON SAID AXLE, BELT AND PULLEY MEANS CONNECTING SAID MOTOR AND SAID DRIVE WHEEL, AND STEERING MEANS FOR SAID CASTER WHEELS ON SAID PAIR OF FRONT SUPPORTING STANDARDS.
Claim 2
Dependent Claim
205 words
A SELF-PROPELLED SCAFFOLD COMPRISING, IN COMBINATION, A NORMALLY HORIZONTAL DECK, A PAIR OF VERTICAL REAR SUPPORTING STANDARDS AND A PAIR OF FRONT SUPPORTING STANDARDS FOR SAID DECK, A SWIVEL MOUNTED CASTER WHEEL AT THE LOWER END OF EACH STANDARD, TRANSVERSE RUNGS CONNECTING THE STANDARDS OF SAID REAR SUPPORTING PAIR OF STANDARDS, A TELESCOPIC FRAME MEMBER INCLUDING A PAIR OF SPACED NORMALLY VERTICAL UPPER CHANNEL MEMBERS AND A TELESCOPING PAIR OF NORMALLY VERTICAL LOWER CHANNEL MEMBERS, A TRANSVERSE CHANNEL MEMBER SECURED BETWEEN THE LOWER ENDS OF SAID PAIR OF UPPER CHANNEL MEMBERS AND ENGAGING AROUND ONE OF SAID RUNGS, A SECOND TRANSVERSE CHANNEL MEMBER EXTENDING BETWEEN THE UPPER ENDS OF SAID UPPER CHANNEL MEMBERS, HOOK MEANS CARRIED BY SAID SECOND TRANSVERSE CHANNEL MEMBER ENGAGING ANOTHER ONE OF SAID RUNGS, SPRING MEANS BIASING SAID LOWER VERTICAL CHANNEL MEMBERS DOWNWARDLY WITH RESPECT TO SAID UPPER CHANNEL MEMBERS, A MOTOR SUPPORT CARRIED BY SAID PAIR OF LOWER CHANNEL MEMBERS ADJACENT THEIR UPPER ENDS, AN AXLE EXTENDING BETWEEN THE LOWER ENDS OF SAID LOWER PAIR OF CHANNEL MEMBERS, A DRIVE WHEEL MOUNTED ON SAID AXLE, BELT AND PULLEY MEANS CONNECTING SAID MOTOR AND SAID DRIVE WHEEL, AND STEERING MEANS FOR SAID CASTER WHEELS ON SAID PAIR OF FRONT SUPPORTING STANDARDS.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |