US3225499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post tensioning concrete reinforcing wires
Assignee: Individual
•
Filing: 1962-07-02
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Granted: 1965-12-28
•
Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Jack P Kourkene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; E04C5/12; E04C5/125; B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/043; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49632; Y10T29/49826; Y10T29/49863; Y10T29/49874
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A STRESSING, REINFORCING WIRE AND ANCHOR STRUCTURE COMPRISING A PLURALITY OF WIRES EXTENDING THROUGH A STRUCTURE TO BE PRESTRESSED, EACH FORMED ON AT LEAST ONE END WITH AN ENLARGED HEAD, A PLURALITY OF BUSHINGS DISPOSED AT LEAST ONE TO A WIRE AND SLIDABLE THEREALONG SO AS TO ABUT THE HEADS OF SAID WIRES, SAID BUSHINGS BEING SUBSTANTIALLY HARDER THAN SAID WIRE HEADS, AN ANCHOR PLATE FORMED WITH APERTURES ABOUT THE PERIPHERY THEREOF THROUGH WHICH THE WIRES EXTEND, EACH OF THE APERTURES SLIGHTLY
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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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |