US3190410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Box girders
Assignee: Malcus Holmquist AB
•
Filing: 1962-03-08
•
Granted: 1965-06-22
•
Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Molstad Ivar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:15
CPC Classifications
B; B66; B66C; B66C7/00; B66C2700/00; B66C2700/01; B66C2700/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A BOX GIRDER MADE OF SHEET METAL COMPRISING TWO SUBSTANTIALLY SYMMETRICAL LONGITUDINAL HALVES SECURED TOGETHER, EACH HALF FORMING A LATERAL SIDE AND HALF THE TOP AND BOTTOM SIDES OF THE GIRDER, EACH HALF BEING BENT TO FORM A TOP TUBULAR SECTION INCLUDING THE UPPER PORTION OF THE LATERAL SIDE, THE HALF OF THE TOP SIDE, A CENTRAL VERTICAL PORTION EXTENDING DOWNWARDLY FROM THE INNER EDGE OF THE HALF OF THE TOP SIDE AND A PORTION EXTENDING OUTWARDLY FROM THE CENTRAL VERTICAL PORTION AT A POINT INTERMEDIATE THE TOP AND BOTTOM OF THE VERTICAL SIDE, THE TWO HALVES BEING POSITIONED WITH SAID CENTRAL VERTICAL PORTIONS CON-
Claim 2
Dependent Claim
105 words
A BOX GIRDER MADE OF SHEET METAL COMPRISING TWO SUBSTANTIALLY SYMMETRICAL LONGITUDINAL HALVES SECURED TOGETHER, EACH HALF FORMING A LATERAL SIDE AND HALF THE TOP AND BOTTOM SIDES OF THE GIRDER, EACH HALF BEING BENT TO FORM A TOP TUBULAR SECTION INCLUDING THE UPPER PORTION OF THE LATERAL SIDE, THE HALF OF THE TOP SIDE, A CENTRAL VERTICAL PORTION EXTENDING DOWNWARDLY FROM THE INNER EDGE OF THE HALF OF THE TOP SIDE AND A PORTION EXTENDING OUTWARDLY FROM THE CENTRAL VERTICAL PORTION AT A POINT INTERMEDIATE THE TOP AND BOTTOM OF THE VERTICAL SIDE, THE TWO HALVES BEING POSITIONED WITH SAID CENTRAL VERTICAL PORTIONS CON-
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |