US3230560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension bridge
Assignee: Walter Bau AG
•
Filing: 1963-01-28
•
Granted: 1966-01-25
•
Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Finsterwalder Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:48
CPC Classifications
E; E01; E01D; E01D2/00; E01D11/00; E01D19/00; E01D19/14; E01D2101/00; E01D2101/20; E01D2101/24; E01D2101/26; E01D2101/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
IN A SUSPENSION BRIDGE OF CONCRETE, SUPPORTING STRUCTURE INCLUDING AT LEAST TWO ABUTMENTS, ANCHORING MEANS PROVIDED AT THE ENDS OF THE BRIDGE AT SAID ABUTMENTS, SAID SUPPORTING STRUCTURES EACH COMPRISING AN UPRIGHT PORTION SUCH AS A PIER AND A CURVED HOROZONTAL SUPPORTING PORTION INTEGRAL WITH SAID UPRIGHT PORTION, PRESENTING A CONVEXLY CURVED TOP SURFACE AND DEFINING A CANTILEVER ARM HAVING A FREE END, SAID ARM TAPERING IN THICKNESS IN THE DIRECTION OF SAID FREE END, AND A CONTINUOUS CONCRETE PLATE HAVING A CONVEXLY CURVED PORTION MOUNTED ON AND FOLLOWING THE CURVATURE OF SAID TOP SURFACE AND HAVING A SAGGING PORTION EXTENDING BETWEEN SAID ABUTMENTS, SAID CONCRETE PLATE BEING DEFINED BY TENSION MEMBERS MADE OF MATAL SUCH AS TENSIONED CABLES EMBEDDED IN CONCRETE, SAID CABLES HAVING END PORTIONS ANCHORED AT SAID ANCHORING MEANS AND BEING TENSIONED TO PROVIDE FOR A PREDETEMINED SAG IN SAID SAGGING PORTION OF SAID PLATE, SAID TENSION MEMBERS CONSTITUTING A LARGE PART, SUCH AS SUBSTANTIALLY 25% OF THE CROSS-SECTIONAL AREA OF SAID PLATE, AND SAID ENDS OF SAID ARMS BEING FLEXIABLE SO THEY MAY FOLLOW THE MOVEMENTS OF SAID PLATE THEREON CAUSED BY TEMPERATURE EXPANSION AND CONTRACTION.
Claim 2
Dependent Claim
190 words
IN A SUSPENSION BRIDGE OF CONCRETE, SUPPORTING STRUCTURE INCLUDING AT LEAST TWO ABUTMENTS, ANCHORING MEANS PROVIDED AT THE ENDS OF THE BRIDGE AT SAID ABUTMENTS, SAID SUPPORTING STRUCTURES EACH COMPRISING AN UPRIGHT PORTION SUCH AS A PIER AND A CURVED HOROZONTAL SUPPORTING PORTION INTEGRAL WITH SAID UPRIGHT PORTION, PRESENTING A CONVEXLY CURVED TOP SURFACE AND DEFINING A CANTILEVER ARM HAVING A FREE END, SAID ARM TAPERING IN THICKNESS IN THE DIRECTION OF SAID FREE END, AND A CONTINUOUS CONCRETE PLATE HAVING A CONVEXLY CURVED PORTION MOUNTED ON AND FOLLOWING THE CURVATURE OF SAID TOP SURFACE AND HAVING A SAGGING PORTION EXTENDING BETWEEN SAID ABUTMENTS, SAID CONCRETE PLATE BEING DEFINED BY TENSION MEMBERS MADE OF MATAL SUCH AS TENSIONED CABLES EMBEDDED IN CONCRETE, SAID CABLES HAVING END PORTIONS ANCHORED AT SAID ANCHORING MEANS AND BEING TENSIONED TO PROVIDE FOR A PREDETEMINED SAG IN SAID SAGGING PORTION OF SAID PLATE, SAID TENSION MEMBERS CONSTITUTING A LARGE PART, SUCH AS SUBSTANTIALLY 25% OF THE CROSS-SECTIONAL AREA OF SAID PLATE, AND SAID ENDS OF SAID ARMS BEING FLEXIABLE SO THEY MAY FOLLOW THE MOVEMENTS OF SAID PLATE THEREON CAUSED BY TEMPERATURE EXPANSION AND CONTRACTION.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |