Patent US3145801A successfully refreshed from Google Patents.
US3145801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold staging
Assignee: Individual
•
Filing: 1963-04-23
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Granted: 1964-08-25
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:35
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/10; E01D19/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A STAGING COMPRISING A CARRIAGE HAVING SUPPORTING WHEELS AND ADAPTED TO TRAVEL ALONG THE ROADWAY OF A PIERSUPPORTED BRIDGE, SAID CARRIAGE HAVING FRAMEWORK ADAPTED TO EXTEND OUT BEYOND THE EDGE OF THE BRIDGE, BEAMS SECURED TO AND PROJECTING DOWN FROM SAID FRAMEWORK, A PLATFORM PIVOTED TO SAID BEAMS ON A HORIZONTAL AXIS BELOW THE LEVEL OF THE BRIDGE AND NORMALLY LOCATED UNDERNEATH SAID CARRIAGE, SAID PLATFORM HAVING MEMBERS EXTENDING BEYOND THE PIVOT, MEANS NORMALLY MAINTAINING SAID PLATFORM IN A HORIZONTAL POSITION, SAID MEANS INCLUDING STRUTS PIVOTALLY ATTACHED AT THEIR LOWER ENDS TO SAID EXTENDING PORTIONS OF THE PLATFORM MEMBERS AND RELEASABLY ATTACHED TO SAID FRAMEWORK.
Claim 2
Dependent Claim
105 words
A STAGING COMPRISING A CARRIAGE HAVING SUPPORTING WHEELS AND ADAPTED TO TRAVEL ALONG THE ROADWAY OF A PIERSUPPORTED BRIDGE, SAID CARRIAGE HAVING FRAMEWORK ADAPTED TO EXTEND OUT BEYOND THE EDGE OF THE BRIDGE, BEAMS SECURED TO AND PROJECTING DOWN FROM SAID FRAMEWORK, A PLATFORM PIVOTED TO SAID BEAMS ON A HORIZONTAL AXIS BELOW THE LEVEL OF THE BRIDGE AND NORMALLY LOCATED UNDERNEATH SAID CARRIAGE, SAID PLATFORM HAVING MEMBERS EXTENDING BEYOND THE PIVOT, MEANS NORMALLY MAINTAINING SAID PLATFORM IN A HORIZONTAL POSITION, SAID MEANS INCLUDING STRUTS PIVOTALLY ATTACHED AT THEIR LOWER ENDS TO SAID EXTENDING PORTIONS OF THE PLATFORM MEMBERS AND RELEASABLY ATTACHED TO SAID FRAMEWORK.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |