US3158959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressed concrete
Assignee: Individual
•
Filing: 1961-09-06
•
Granted: 1964-12-01
•
Expires: 1981-09-06
Abstract
No abstract record available.
Inventors
- 👤 Jr George D Ratliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:20
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/20; E04C3/26; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
PRESTRESSED CONCRETE SPAN COMPRISING: A CONCRETE BEAM HAVING SIDEWALLS; SPACED APART FIRST AND SECOND PIER MEANS FOR OPERATIVELY SUPPORTING SAID BEAM; HINGE MEANS CARRIED BY SAID BEAM INTERMEDIATE THE ENDS THEREOF BETWEEN SAID PIER MEANS IN LATERALLY EXTENDING RELATIONSHIP BEYOND THE WALLS OF SAID BEAM; FIRST TENSION ELEMENTS JOINED TO ONE END OF SAID BEAM AND EXTENDING ADJACENT THE OUTSIDE OF THE SIDEWALLS THEREOF AND IN ENGAGEMENT WITH SAID HINGE MEANS; SECOND TENSION ELEMENTS JOINED TO SAID BEAM AT THE OPPOSITE END THEREOF EXTENDING ALONG THE OUTSIDE WALLS OF SAID BEAM AND JOINED TO SAID FIRST TENSION ELEMENTS, SAID FIRST PIER MEANS SUPPORTING THE RESPECTIVE END OF SAID BEAM WHOLLY BY SUPPORTIVE ENGAGEMENT OF SAID FIRST TENSION ELEMENTS THEREWITH.
Claim 2
Dependent Claim
119 words
PRESTRESSED CONCRETE SPAN COMPRISING: A CONCRETE BEAM HAVING SIDEWALLS; SPACED APART FIRST AND SECOND PIER MEANS FOR OPERATIVELY SUPPORTING SAID BEAM; HINGE MEANS CARRIED BY SAID BEAM INTERMEDIATE THE ENDS THEREOF BETWEEN SAID PIER MEANS IN LATERALLY EXTENDING RELATIONSHIP BEYOND THE WALLS OF SAID BEAM; FIRST TENSION ELEMENTS JOINED TO ONE END OF SAID BEAM AND EXTENDING ADJACENT THE OUTSIDE OF THE SIDEWALLS THEREOF AND IN ENGAGEMENT WITH SAID HINGE MEANS; SECOND TENSION ELEMENTS JOINED TO SAID BEAM AT THE OPPOSITE END THEREOF EXTENDING ALONG THE OUTSIDE WALLS OF SAID BEAM AND JOINED TO SAID FIRST TENSION ELEMENTS, SAID FIRST PIER MEANS SUPPORTING THE RESPECTIVE END OF SAID BEAM WHOLLY BY SUPPORTIVE ENGAGEMENT OF SAID FIRST TENSION ELEMENTS THEREWITH.
References Cited (Backward Citations)
US1331871A
Cited
US1979642A
Cited
US2155121A
Cited
US2380953A
Cited
US2510958A
Cited
DE866089C
Cited
FR1015745A
Cited
GB870564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |