Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure – Including adjustable thickness means
Reexamination Certificate
2006-05-02
2006-05-02
Saether, Flemming (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Washer structure
Including adjustable thickness means
C411S546000, C052S293300
Reexamination Certificate
active
07037060
ABSTRACT:
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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Anchor Tiedown System Multi-Story Holdown Applications, Simpson Strong-Tie, 24 pages, Mar. 2002.
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Pate & Pierce & Baird
Saether Flemming
LandOfFree
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