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Post-tensioning-anchor

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Post-tensioning anchor

Details

Inventors: Rodriguez, Alan;
Assignee:
Primary Examiner: Friedman; Carl D.
Assistant Examiner:
Attorney, Agent or Firm: Cantrell; Thomas L., Moore; Stanley R.

A post tensioning anchor assembly comprising a tapered tubular member, cable cap and anchoring plate assembly. The anchoring plate is constructed for live end or dead end securement in the sidewall of a concrete formation for post tensioning of a sheathed cable. The plate has inside and outside faces constructed for matingly receiving over the cable either the tubular member cap or both. In this manner the post tensioning plate assembly can be used for both outside and intermediate post tensioning constructions. In the intermediate configuration, tubular members are secured both to the inside and the outside faces of the plate with the tensioning cable extending therethrough.

DETAILED DESCRIPTION The present invention pertains to a tendon anchoring system and method therefor.
More particularly, one aspect of the invention comprises an improved post-tensioning anchor plate of the type constructed for securement to a concrete structure and the receipt of a tensioning cable therethrough.
The anchor plate includes means for securing the tensioning cable therein in taught engagement.
The improvement comprises an anchor plate housing having first and second faces, the first face being adapted for facing the poured concrete structure with the second oppositely disposed face adapted for facing outwardly therefrom.
The anchor plate housing is constructed with a central aperture formed therethrough, the aperture having a first collar region formed on the first face and a second collar, or central body region formed on the second face.
The first and second collar regions are concentrically aligned one with the other.
At least one tubular sheath is provided and adapted for engagement with the first anchor plate face for extension outwardly therefrom into the concrete with the tendon extending therethrough.
The first collar region also has a tubular receiving surface with an outside diameter substantially equivalent to the inside diameter of the tubular member and adapted for the slip fit engagement thereagainst for the sealing of the tendon therein.
The second collar region includes a tubular engaging region of substantially equivalent diameter to the first collar tubular engaging region for permitting securement of a second tubular member or a cylindrical cap member thereon.
In another aspect, the invention includes an improved anchor plate of the type utilized for securement in a concrete structure and the receipt of a post-tensioning tendon therethrough.
Means are provided for fixedly securing the tendon therein.
At least one tapered, tubular extension member is provided for securement to the plate for extending into the concrete in protection of the tendon adjacent the anchor plate

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