US3927732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1974-04-01
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Granted: 1975-12-23
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Expires: 1994-04-01
Abstract
Abstract A scaffold is provided on a top of the jack, which in turn is provided on the truck to be laid on the truck, so that the truck can be moved to the adjacent divisions passing through the man hole of the divisional bulkhead.
Inventors
- 👤 Takayuki Ooka
- 👤 Shinji Aihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:05
CPC Classifications
B; B66; B66F; B66F11/00; B66F11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A movable scaffold system, comprising: A MOVABLE SUPPORTING TRUCK HAVING A FLAT TRUCK BED; TELESCOPIC JACK MEANS HAVING A LOWER SECTION AND AT LEAST ONE UPPER SECTION, SAID LOWER SECTION BEING PIVOTABLY MOUNTED ON SAID TRUCK BED FOR PIVOTING ABOUT A HORIZONTAL AXIS BETWEEN AN UPRIGHT POSITION AND A HORIZONTAL POSITION, AND ERECTING MEANS ON SAID BED FOR CONTROLLING SAID PIVOTING, SAID AT LEAST ONE UPPER SECTION BEING TELESCOPABLE INTO SAID LOWER SECTION AND SAID LOWER SECTION HAVING TRACK-ENGAGING MEANS SECURED TO SAID LOWER SECTION FOR SUPPORTING SAID LOWER SECTION ON A TRACK WHEN SAID TRUCK IS MOVED ALONG SAID TRACK; SAID JACK MEANS IN ITS HORIZONTAL POSITION LYING ALONG SAID BED WITH ITS UPPER SIDE EXTENDING TO A HEIGHT NO GREATER THAN THAT OF THE HIGHEST PART OF THE REMAINDER OF SAID SYSTEM NOT SUPPORTED ON SAID JACK MEANS, AND HAVING AN OVERHANGING PORTION EXTENDING BEYOND AN END OF SAID TRUCK; AND FOLDABLE SCAFFOLD MEANS MOUNTED TO SAID UPPER SECTION OF SAID JACK MEANS AND PIVOTABLE BETWEEN A HORIZONTAL POSITION WHEN SAID JACK MEANS IS UPRIGHT AND A FOLDED HORIZONTAL POSITION BENEATH SAID OVERHANGING PORTION OF SAID JACK MEANS AND BETWEEN SAID TRACK-ENGAGING MEANS WHEN SAID JACK MEANS IS HORIZONTAL.
Claim 2
Dependent Claim
201 words
A movable scaffold system, comprising: A MOVABLE SUPPORTING TRUCK HAVING A FLAT TRUCK BED; TELESCOPIC JACK MEANS HAVING A LOWER SECTION AND AT LEAST ONE UPPER SECTION, SAID LOWER SECTION BEING PIVOTABLY MOUNTED ON SAID TRUCK BED FOR PIVOTING ABOUT A HORIZONTAL AXIS BETWEEN AN UPRIGHT POSITION AND A HORIZONTAL POSITION, AND ERECTING MEANS ON SAID BED FOR CONTROLLING SAID PIVOTING, SAID AT LEAST ONE UPPER SECTION BEING TELESCOPABLE INTO SAID LOWER SECTION AND SAID LOWER SECTION HAVING TRACK-ENGAGING MEANS SECURED TO SAID LOWER SECTION FOR SUPPORTING SAID LOWER SECTION ON A TRACK WHEN SAID TRUCK IS MOVED ALONG SAID TRACK; SAID JACK MEANS IN ITS HORIZONTAL POSITION LYING ALONG SAID BED WITH ITS UPPER SIDE EXTENDING TO A HEIGHT NO GREATER THAN THAT OF THE HIGHEST PART OF THE REMAINDER OF SAID SYSTEM NOT SUPPORTED ON SAID JACK MEANS, AND HAVING AN OVERHANGING PORTION EXTENDING BEYOND AN END OF SAID TRUCK; AND FOLDABLE SCAFFOLD MEANS MOUNTED TO SAID UPPER SECTION OF SAID JACK MEANS AND PIVOTABLE BETWEEN A HORIZONTAL POSITION WHEN SAID JACK MEANS IS UPRIGHT AND A FOLDED HORIZONTAL POSITION BENEATH SAID OVERHANGING PORTION OF SAID JACK MEANS AND BETWEEN SAID TRACK-ENGAGING MEANS WHEN SAID JACK MEANS IS HORIZONTAL.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |