Wedge anchorage for a tension member in a prestressed concrete structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 12, 1988
Grant Date -
N/A
app pub date -
Oct 22, 1985
filing date -
Oct 24, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A wedge anchorage for an axially elongated tension member, encased in and arranged to prestress a concrete structure, includes an anchor member with a conically widening surface where a wedge seats for securing the tension member in the tensioned state with a cap arranged to fit in locked engagement with the end of the anchor member through which the tension member extends out of the concrete structure. The cap has a cover wall extending transversely of the axial direction and spaced from the anchor member. An opening is provided in the cover wall through which the tension member extends out of the concrete structure. A spring or other biasing member is located within the cap for limiting axial displacement of the wedge when the tension member is stressed in tension. This arrangement avoids the formation of a recess in the surface of the concrete structure from which the tension member extends and the need for a filler member for sealing off the recess when the prestressing operation is completed.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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DYWIDAG-SYSTEMS INTERNATIONAL GMBH | 80796 MÜNCHEN |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Hansen, Per C | Oslo, NO | 1 | 26 |
# of filed Patents : 1 Total Citations : 26 | |||
Herrmann, Gero | Karlsfeld, DE | 4 | 65 |
# of filed Patents : 4 Total Citations : 65 |
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Patent Citation Ranking
- 26 Citation Count
- E04C Class
- 0 % this patent is cited more than
- 37 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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