Patent US3225872A successfully refreshed from Google Patents.
US3225872A
Expired / Lapsed
US
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Structural member
Assignee: National Steel Corp
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Filing: 1962-12-31
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Granted: 1965-12-28
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Paul S O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:19
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/0482; Y; Y10; Y10T; Y10T403/00; Y10T403/44; Y10T403/70; Y10T403/7075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN COMBINATION WITH AN ELONGATED FIRST STRUCTURAL MEMBER HAVING A FLAT SURFACE, A PLURALITY OF SECOND STRUCTURAL MEMBERS DISPOSED TRANSVERSELY OF THE ELONGATED FIRST STRUCTURAL MEMBER, THE SECOND STRUCTURAL MEMBERS OVERLAPPING EACH OTHER IN A REGION OF OVERLAP OF A LENGTH SUBSTANTIALLY GREATER THAN THE WIDTH OF THE FLAT SURFACE OF THE ELONGATED FIRST STRUCTURAL MEMBER; EACH SECOND STRUCTURAL MEMBER COMPRISING AN ELONGATED FLAT WEB AND A FLANGE EXTENDING LATERALLY FROM EACH SIDE EDGE OF EACH WEB AND BEING DISPOSED ON OPPOSITE SIDES OF THE PLANE OF THE WEB, EACH FLANGE INCLUDING A LIP INTEGRAL AND DISPOSED AT AN OBTUSE ANGLE THEREWITH EACH LIP EXTENDING ALONG THE OUTER SIDE EDGE OF ITS ASSOCIATED FLANGE TO FORM AN OBTUSE DIHEDRAL THERWITH, THE OBTUSE DIHEDRAL FORMED BY ONE LIP AND ITS ASSOCIATED FLANGE OPENING TOWARD THE OBTUSE
Claim 2
Dependent Claim
135 words
IN COMBINATION WITH AN ELONGATED FIRST STRUCTURAL MEMBER HAVING A FLAT SURFACE, A PLURALITY OF SECOND STRUCTURAL MEMBERS DISPOSED TRANSVERSELY OF THE ELONGATED FIRST STRUCTURAL MEMBER, THE SECOND STRUCTURAL MEMBERS OVERLAPPING EACH OTHER IN A REGION OF OVERLAP OF A LENGTH SUBSTANTIALLY GREATER THAN THE WIDTH OF THE FLAT SURFACE OF THE ELONGATED FIRST STRUCTURAL MEMBER; EACH SECOND STRUCTURAL MEMBER COMPRISING AN ELONGATED FLAT WEB AND A FLANGE EXTENDING LATERALLY FROM EACH SIDE EDGE OF EACH WEB AND BEING DISPOSED ON OPPOSITE SIDES OF THE PLANE OF THE WEB, EACH FLANGE INCLUDING A LIP INTEGRAL AND DISPOSED AT AN OBTUSE ANGLE THEREWITH EACH LIP EXTENDING ALONG THE OUTER SIDE EDGE OF ITS ASSOCIATED FLANGE TO FORM AN OBTUSE DIHEDRAL THERWITH, THE OBTUSE DIHEDRAL FORMED BY ONE LIP AND ITS ASSOCIATED FLANGE OPENING TOWARD THE OBTUSE
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |