Method of forming an anchorage for prestress reinforced structural members
Abstract
Abstract THIS INVENTION IS CONCERNED WITH THE ANCHORING OF TENDONS OF PRESTRESSED STRUCTURAL MEMBERS. IN PARTICULAR THE INVENTION RELATES TO AN IMPROVED METHOD OF FORMING AN ANCHORING DEVICE ON A TENDON AT ANY POINT ON THE LENGTH OF A TENDON. THE ANCHORING DEVICE IS IN THE FORM OF A MOLDED PROTRUSION OF PLASTIC OR OTHER MATERIAL FORMED ON THE TENDON, AT A TEMPERATURE SUFFICIENTLY LOW TO PREVENT WEAKENING OF THE TENDON, AND BONDED THERETO EITHER BY AN ADHENSIVE OR BY MECHANICALLY DEFORMING THE TENDON. THE ANCHORING DEVICE MAY BE REINFORCED INTERNALLY OR EXTERNALLY AND MAY HAVE ANY ONE OF A NUMBER OF DIFFERENT EXTERNAL CONTOURS AS REQUIRED IN USE. WHEN THE ANCHORING DEVICE HAS BEEN FORMED ON THE TENDON THE TENDON MAY BE STRESSED TO FORM A PRESTRESSED TENDON OF A STRUCTURAL MEMBER AND THE ANCHORING DEVICES ARE ADAPTED TO BEAR AGAINST THE BEARING PLATES TO TRANSFER THE TENSILE LOAD ON THE TENDON TO A COMPRESSIVE LOAD ON THE STRUCTURAL MEMBER.
Inventors
- 👤 William M Slater
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |