US3241634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable scaffolds
Assignee: Individual
•
Filing: 1965-02-01
•
Granted: 1966-03-22
•
Expires: 1985-02-01
Abstract
No abstract record available.
Inventors
- 👤 Clyde W Prosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:25
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; C21C5/441; B; B66; B66B; B66B9/00; B66B9/16; B66B9/187; E; E04; E04G; E04G1/00; E04G1/36; E04G1/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
A PORTABLE SCAFFOLD PARTICULARLY ADAPTED FOR USE IN FURNACES HAVING AN OPENING SMALLER THAN THE INTERIOR DIAMETER COMPRISING A PLURALITY OF HOLLOW ELONGATED SCAFFOLD MEMBERS TELESCOPING WITHIN ONE ANOTHER, COOPERATING LOCK MEANS ON THE TOP AND BOTTOM OF EACH SAID MEMBER ADAPTED TO HOLD THE BOTTOM OF ONE MEMBER ADJACENT THE TOP OF THE NEXT SMALLER MEMBER IN EXTENSIBLE POSITION, SUPPORT ARMS HINGED AT THE TOP OF THE LARGEST MEMBER ADAPTED TO BE RAISED TO THE HORIZONTAL POSITION AND HELD THERE, REMOVABLE PLATFORM MEANS ON SAID ARMS, VERTICALLY EXTENDING GUIDE MEANS ON THE SAID LARGEST MEMBER EXTENDING ABOVE SAID MEMBER AND ADAPTED TO RECEIVE A CAGE MEANS MOVABLE THEREBETWEEN, CAGE MEANS SLIDABLY ENGAGING SAID VERTICALLY EXTENDING GUIDE MEANS, A PLURALITY OF TELESCOPING COVER MEMBERS SURROUNDING SAID GUIDE MEANS, ONE OF SAID COVER MEMBERS BEING ATTACHED TO THE LARGEST SCAFFOLD MEMBER EXTENDING TRANSVERSELY FROM THE PLANE OF THE TOP END THEREOF TO FORM WITH THE PLURALITY OF COVER MEMBERS AN ADJUSTABLE LENGTH ELEVATOR SHAFT SURROUNDING THE GUIDE MEANS, A SUPPORT PLATFORM SPACED FROM THE LARGEST MEMBER OF THE SCAFFOLD MEMBERS AND CARRYING THE COVER MEMBER OPPOSITE THE ONE FIXED TO THE LARGEST SCAFFOLD MEMBER, EXTENSIBLE MEANS BETWEEN THE LARGEST MEMBER OF THE SCAFFOLD MEMBERS AND SAID SUPPORT PLATFORM
Claim 2
Dependent Claim
207 words
A PORTABLE SCAFFOLD PARTICULARLY ADAPTED FOR USE IN FURNACES HAVING AN OPENING SMALLER THAN THE INTERIOR DIAMETER COMPRISING A PLURALITY OF HOLLOW ELONGATED SCAFFOLD MEMBERS TELESCOPING WITHIN ONE ANOTHER, COOPERATING LOCK MEANS ON THE TOP AND BOTTOM OF EACH SAID MEMBER ADAPTED TO HOLD THE BOTTOM OF ONE MEMBER ADJACENT THE TOP OF THE NEXT SMALLER MEMBER IN EXTENSIBLE POSITION, SUPPORT ARMS HINGED AT THE TOP OF THE LARGEST MEMBER ADAPTED TO BE RAISED TO THE HORIZONTAL POSITION AND HELD THERE, REMOVABLE PLATFORM MEANS ON SAID ARMS, VERTICALLY EXTENDING GUIDE MEANS ON THE SAID LARGEST MEMBER EXTENDING ABOVE SAID MEMBER AND ADAPTED TO RECEIVE A CAGE MEANS MOVABLE THEREBETWEEN, CAGE MEANS SLIDABLY ENGAGING SAID VERTICALLY EXTENDING GUIDE MEANS, A PLURALITY OF TELESCOPING COVER MEMBERS SURROUNDING SAID GUIDE MEANS, ONE OF SAID COVER MEMBERS BEING ATTACHED TO THE LARGEST SCAFFOLD MEMBER EXTENDING TRANSVERSELY FROM THE PLANE OF THE TOP END THEREOF TO FORM WITH THE PLURALITY OF COVER MEMBERS AN ADJUSTABLE LENGTH ELEVATOR SHAFT SURROUNDING THE GUIDE MEANS, A SUPPORT PLATFORM SPACED FROM THE LARGEST MEMBER OF THE SCAFFOLD MEMBERS AND CARRYING THE COVER MEMBER OPPOSITE THE ONE FIXED TO THE LARGEST SCAFFOLD MEMBER, EXTENSIBLE MEANS BETWEEN THE LARGEST MEMBER OF THE SCAFFOLD MEMBERS AND SAID SUPPORT PLATFORM
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |