US3266051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polygonal, telescoping, tubular members
Assignee: Individual
•
Filing: 1962-07-02
•
Granted: 1966-08-09
•
Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Charles W Attwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:29
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/0803; B21C37/15; B21C37/156; B21C37/157; B21D; B21D5/00; B21D5/06; B21D5/08; B21D5/10; B21D5/12; B23; B23K; B23K31/00; B23K31/02; B23K31/027; E04C3/08; E04C3/09; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0421; E04C2003/0426; E04C2003/043; E04C2003/0443; E04C2003/0465
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A SET OF TELESCOPING ELONGATED TUBULAR MEMBERS FOR LOAD CARRYING STRUCTURES, (A) SAID MEMBERS HAVING GEOMETRICALLY SIMILAR POLYGONAL TRANSVERSE CROSS SECTIONS DEFINED BY PLURALITIES OF FLAT SIDES AND LONGITUDINAL CORNERS, (B) ONE CORNER OF EACH MEMBER BEING A WELDMENT JOINING ADJACENT SIDES OF THE MEMBER, (C) EACH OF SAID WELDMENT CORNERS HAVING A LONGITUDINAL INNER PROTRUSION OF FLASH MATERIAL AND AN OUTER SURFACE, (D) THE OUTER SURFACES OF ALL OF THE CORNERS OF SAID MEMBERS BEING SUBSTANTIALLY UNIFORMLY ARCUATE IN TRANSVERSE CROSS-SECTION, AND (E) EACH MEMBER WHEN SAID MEMBERS ARE CONCENTRICALLY DISPOSED HAVING OUTER SIDE SURFACES DIMENSIONED FROM THE INNER SIDE SURFACES OF THE NEXT LARGER MEMBER BY AN AMOUNT CLOSE TO OR LESS THAN THE EXTENT OF FLASH MATERIAL PROTRUSION FROM THE WELDMENT CORNER, WHEREBY THE LOCATION OF SAID PROTRUSION AT THE CORNER OBVIATES INTERFERENCE WITH THE NEXT INNER TUBULAR MEMBER.
Claim 2
Dependent Claim
142 words
A SET OF TELESCOPING ELONGATED TUBULAR MEMBERS FOR LOAD CARRYING STRUCTURES, (A) SAID MEMBERS HAVING GEOMETRICALLY SIMILAR POLYGONAL TRANSVERSE CROSS SECTIONS DEFINED BY PLURALITIES OF FLAT SIDES AND LONGITUDINAL CORNERS, (B) ONE CORNER OF EACH MEMBER BEING A WELDMENT JOINING ADJACENT SIDES OF THE MEMBER, (C) EACH OF SAID WELDMENT CORNERS HAVING A LONGITUDINAL INNER PROTRUSION OF FLASH MATERIAL AND AN OUTER SURFACE, (D) THE OUTER SURFACES OF ALL OF THE CORNERS OF SAID MEMBERS BEING SUBSTANTIALLY UNIFORMLY ARCUATE IN TRANSVERSE CROSS-SECTION, AND (E) EACH MEMBER WHEN SAID MEMBERS ARE CONCENTRICALLY DISPOSED HAVING OUTER SIDE SURFACES DIMENSIONED FROM THE INNER SIDE SURFACES OF THE NEXT LARGER MEMBER BY AN AMOUNT CLOSE TO OR LESS THAN THE EXTENT OF FLASH MATERIAL PROTRUSION FROM THE WELDMENT CORNER, WHEREBY THE LOCATION OF SAID PROTRUSION AT THE CORNER OBVIATES INTERFERENCE WITH THE NEXT INNER TUBULAR MEMBER.
References Cited (Backward Citations)
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Cited
FR752539A
Cited
US2888111A
Cited
US2967594A
Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |