Shrinkage compensator for building tiedowns

  • US 6,390,747 B1
  • Filed: 04/25/2000
  • Issued: 05/21/2002
  • Est. Priority Date: 09/24/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus, expandable axially along an anchor between a surface and a retainer fastened to the anchor, the take-up unit comprising:

  • a base, threaded for engaging a slide;

    the slide, threadedly engaging the base to provide relative linear translation during multiple revolutions of relative rotation with respect to the base;

    the base and slide configured to be axially independent from the anchor; and

    a bias element for urging the relative rotation.

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