Shrinkage compensator for building tiedowns

E - Fixed Constructions – 04 – B

Patent

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Details

E04B 1/38 (2006.01) F16B 5/02 (2006.01) F16B 43/00 (2006.01) E04B 1/00 (2006.01)

Patent

CA 2313735

An automatic, self-energized, length extending, take-up unit for general use in wall hold down systems. The take-up unit is generally installed as a separate element, independent of threaded retaining elements of a hold down system. One embodiment includes an internal, preloaded, coil spring to rotate a threaded sliding member relative to a threaded base member, thereby to extend a height of the take-up unit. A trigger mechanism may be included to prevent unintended actuation of the unit. Additionally, a safety mechanism may be included to prevent inadvertent separation of a base member and a sliding member, thereby to prevent loss of a preload in an energizing spring.

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