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US 9,827,721 B2Granted
Collapsible element pocket former
OwnerFelix Sorkininventor
Life of this patent
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Abstract
A pocket former may include a pocket former body, the pocket former body having an outer surface. The pocket former may further include a collapsible element, the collapsible element formed on the outer surface of the pocket former body. The collapsible element may extend radially outwardly from the pocket former body.
Claims18
A method of forming a post-tensioned concrete member comprising:
- positioning a post-tensioning tendon within a concrete form, the post-tensioning tendon including a tension member, fixed anchor, and a stressing end anchor;
- positioning a pocket former between the stressing end anchor and the concrete form, the pocket former including:
- a pocket former body, the pocket former body having an outer surface, the pocket former body having a tension member channel therethrough;
- and
- a plurality of collapsible elements, the collapsible elements positioned and spaced about a circumference of the outer surface of the pocket former body, the collapsible elements extending radially outwardly from the pocket former body;
- inserting the tension member through the tension member channel of the pocket former body;
- placing concrete into the concrete form;
- applying force to the pocket former body;
- collapsing the collapsible elements toward the pocket former body;
- and
- forming a cavity within the concrete by removing the pocket former body from the concrete.
8 more elements
Dependencies are inferred from the claim text.