Wedge-receiving cavity with radiused edge for an anchor body of a post-tension anchor system
First Claim
1. An improved intermediate anchor for a post-tension system, the improvement comprising:
- an anchor body having an internal wedge-receiving cavity, said cavity having a first portion of constantly diminishing diameter extending inwardly from one end of said anchor body, said first portion having an angle of taper with respect to a center line of said cavity, said cavity having a second portion extending inwardly from an opposite end of said anchor body, said first portion and said second portion being coaxial and communicating with each other, said second portion having an angle of taper less than said angle of taper of said first portion, said second portion of said cavity opening said opposite end of said anchor body, said second portion of said cavity having a radiused edge at said opposite end, said second portion having a constantly increasing diameter extending inwardly from said radiused edge.
0 Assignments
0 Petitions
Accused Products
Abstract
An improved anchor for a post-tension system having an anchor body with an internal wedge-receiving cavity. The cavity has a first portion of constantly diminishing diameter extending inwardly from one end of the anchor body. The first portion has an angle of taper with respect to a center line of the cavity. The cavity has a second portion extending inwardly from an opposite end of the anchor body. The first portion and the second portion are coaxial and communicate with each other. The second portion has an angle of taper which is less than the first portion. The first and second portions are cast with the anchor body. The angle of taper of the second portion is less than seven degrees or a negative angle with respect to the center line. The second portion of the cavity has a radiused edge curving outwardly from the cavity to the opposite end of the anchor body. The radiused edge is flush with the second portion of the cavity.
-
Citations
13 Claims
-
1. An improved intermediate anchor for a post-tension system, the improvement comprising:
-
an anchor body having an internal wedge-receiving cavity, said cavity having a first portion of constantly diminishing diameter extending inwardly from one end of said anchor body, said first portion having an angle of taper with respect to a center line of said cavity, said cavity having a second portion extending inwardly from an opposite end of said anchor body, said first portion and said second portion being coaxial and communicating with each other, said second portion having an angle of taper less than said angle of taper of said first portion, said second portion of said cavity opening said opposite end of said anchor body, said second portion of said cavity having a radiused edge at said opposite end, said second portion having a constantly increasing diameter extending inwardly from said radiused edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
a tendon extending through said cavity; and
a plurality of wedges in interference fit relationship between a wall of said first portion and an exterior surface of said tendon.
-
-
5. The improvement of claim 4, each of said plurality of wedges having a length not more than a length of said first portion.
-
6. The improvement of claim 4, said tendon having a sheathing extending therearound, said second portion having a diameter greater than a diameter of said sheathing on said tendon.
-
7. The improvement of claim 4, said anchor body being encapsulated with a polymeric material, said polymeric material forming a tubular portion extending outwardly of said opposite end of said anchor body, said tendon extending through said tubular portion.
-
8. The improvement of claim 7, further comprising:
a corrosion-protection tube connected to said tubular portion and extending around a portion of a length of said tendon, said corrosion-protection tube being in generally liquid-tight sealing relationship with said tendon at an end opposite said tubular portion.
-
9. The improvement of claim 8, said corrosion-protection tube having an end affixed interior of said tubular portion in generally liquid-tight relationship, said end of said corrosion-protection tube positioned adjacent said opposite end of said anchor body.
-
10. The improvement of claim 9, said corrosion-protection tube having a spearhead-shaped end, said spearhead-shaped end being in snap-fit relationship with a shoulder formed interior of said tubular portion.
-
11. The improvement of claim 1, said first portion having a length greater than a length of said second portion.
-
12. An improved intermediate anchor for a post-tension system, the improvement comprising:
-
an anchor body having an internal wedge-receiving cavity, said cavity having a first portion of constantly diminishing diameter extending inwardly from one end of said anchor body, said first portion having an angle of taper with respect to a center line of said cavity, said cavity having a second portion extending inwardly from an opposite end of said anchor body, said first portion and said second portion being coaxial and communicating with each other, said second portion having an angle of taper less than said first portion, said second portion of said cavity opening at said opposite end of said anchor body, said second portion of said cavity having a radiused edge at said opposite end, said second portion having a larger diameter at said opposite end of said anchor body than a diameter of a narrow end of said first portion; and
a tendon extending through said cavity, said tendon having a sheathing extending therearound exterior of said cavity, said narrow end of said first portion having a diameter greater than a diameter of said sheathing on said tendon. - View Dependent Claims (13)
-
Specification