Tendon anchorage
Abstract
Abstract A TENDON ANCHORAGE FOR USE IN PRESTRESSING CONCRETE MEMBERS WHICH PREFERABLY INCLUDES A TUBULAR MOUNTING MEANS MOUNTED TO EXTEND THROUGH A WEDGE SUPPORTING BORE IN THE ANCHORAGE IN ORDER TO SECURE THE ANCHORAGE IN FIXED SPACED RELATION TO A CONCRETE FORM FOR CASTING THE ANCHORAGE INTO THE CONCRETE MEMBER IS DISCLOSED. THE MOUNTING TUBE IS FORMED TO SECURE THE ANCHORAGE FROM THE SIDE THEREOF REMOTE TO THE CONCRETE FORM AND URGE THE ANCHORAGE AGAINST A SPACING MEANS PLACED BETWEEN THE ANCHORAGE AND THE CONCRETE FORM. BEARING PLATES MAY SIMILARLY BE SECURED BY THE MOUNTING MEANS THROUGH A TENDON RECEIVING OPENING FROM THE REMOTE SIDE THEREOF. ANCHORAGE GROUTING APPARATUS AND TENDON CONTAINING CONDUITS MAY BE SECURED TO THE MOUNTING TUBE. AN ANCHORAGE WHEREIN THE WEDGES EXTEND FROM THE REMOTE SIDE OF THE ANCHORAGE AND ARE UNSUPPORTED AND ACHIEVE GRIPPING ACTION THROUGH CANTILEVER FORCES FROM THE ANCHORAGE IS ALSO DISCLOSED.
Inventors
- 👤 George H Howlett
- 👤 James W Howlett
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |