US 11,745,277 B2
Shearing apparatus and process for post tensioning tendon
Felix Sorkin, Stafford, TX (US)
Filed by Felix Sorkin, Stafford, TX (US)
Filed on Jan. 10, 2023, as Appl. No. 18/95,171.
Application 18/095,171 is a division of application No. 17/218,822, filed on Mar. 31, 2021, granted, now 11,548,080.
Claims priority of provisional application 63/007,209, filed on Apr. 8, 2020.
Prior Publication US 2023/0158585 A1, May 25, 2023
Int. Cl. B23D 15/04 (2006.01); B23D 33/02 (2006.01); B23D 15/14 (2006.01); E04C 5/12 (2006.01)
CPC B23D 15/04 (2013.01) [B23D 15/14 (2013.01); B23D 33/02 (2013.01); E04C 5/122 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A process for shearing a tendon comprising:
pushing a tendon through an anchor body;
positioning the tendon within a table shear, the table shear comprising:
a clamp; and
a shearing mechanism, the shearing mechanism supported by the clamp, the shearing mechanism including:
a fixed lower shear blade;
a lower shear blade backup plate supporting the fixed lower shear blade;
a moveable upper shear blade supported by an upper shear blade backup plate;
a shear compression cylinder, the shear compression cylinder having a cylinder bushing abutting a surface of the upper shear blade backup plate;
wherein the clamp includes:
a bottom plate;
a lower support block, the lower support block resting on the bottom plate;
an upper spring hold down block, the upper spring hold down block positioned above the lower support block, the gap between the lower support block and upper spring hold down block defining a shear blade hole;
a lower biasing mechanism, the lower biasing mechanism held in place by the bottom plate; and
an upper biasing mechanism, the upper biasing mechanism held in place by an upper shear block
wherein the table shear is configured such that applying pressure to the upper shear blade backup plate through the shear compression cylinder, causes the movable upper shear blade and fixed lower shear blade to cut a post tensioning tendon;
clamping the tendon with the clamp; and
shearing the tendon with the shearing mechanism by moving the movable upper shear blade relative to the fixed lower shear blade.