US 12,083,579 B2
Frameless lightweight post-tensioning jack and method for using same
Felix Sorkin, Stafford, TX (US)
Filed by Felix Sorkin, Stafford, TX (US)
Filed on Feb. 9, 2024, as Appl. No. 18/437,648.
Application 18/437,648 is a continuation of application No. 17/135,318, filed on Dec. 28, 2020.
Claims priority of provisional application 62/968,789, filed on Jan. 31, 2020.
Claims priority of provisional application 63/006,202, filed on Apr. 7, 2020.
Prior Publication US 2024/0181520 A1, Jun. 6, 2024
Int. Cl. B21F 11/00 (2006.01); B23D 29/00 (2006.01); B23D 29/02 (2006.01)
CPC B21F 11/00 (2013.01) [B23D 29/002 (2013.01); B23D 29/023 (2013.01)] 12 Claims
OG exemplary drawing
 
7. A method for clamping a strand, comprising:
a) providing a strand clamp attached to a strand cutter, the strand clamp comprising:
a clamp housing;
a right clamp arm;
a left clamp arm;
a spring configured to urge the right and left clamp arms together around a strand axis wherein the spring has a first and second end and wherein the first end bears on the right clamp arm and the second end bears on the left clamp arm; and
a cover plate with a U-shaped opening for a strand wherein the cover plate is configured to enclose the strand clamp at a distal end;
wherein:
the right and left clamp arms are configured to cooperate to define: (a) a strand channel between opposing curved strand-receiving groove faces on the right and left clamp arms, the strand channel being parallel to the strand axis, and (b) a clamp entry between opposing guide faces on the right and left clamp arms,
b) aligning the clamp entry with the strand;
c) pushing the strand cutter against the strand such that a pushing force is created sufficient to overcome a spring force urging the right and left clamp arms together; and
d) receiving the strand within the strand channel wherein the spring force causes the right and left clamp arms to create a pinching force on the strand.