Anchoring device for a threaded member

Details Anchoring device for a threaded member Anchoring device for a threaded member

1995-09-14

1997-06-24

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Including sleeve and distinct tapered expander

411 73, 411180, 411902, F16B 1306, F16B 3704

Patent

active

056412568

ABSTRACT:
An anchoring device for anchoring a threaded member such as a screw or bolt in a substrate material includes an anchoring sheath for receiving the threaded member. The anchoring sheath includes annular anchoring ribs formed around a body portion of the anchoring sheath and at least one longitudinal rib extending along at least a portion of the body portion of the anchoring sheath and extend outwardly from the anchoring sheath. In a sheath with more than one longitudinal rib, the longitudinal ribs lie in different planes which intersect at the longitudinal axis of the anchoring sheath. The anchoring sheath preferably includes top and bottom regions which have no annular or longitudinal ribs. The bottom region can have an extended length to accommodate threaded members of varying lengths and a hole providing drainage of water, ice, or other debris as the threaded member is tightened into the sheath. The top region can further include a sleeve positioned around the sheath to match the modulus of elasticity of at least the top portion of the anchoring sheath to that of the substrate, and to prevent fractures in the substrate caused by stress in the substrate. The anchoring sheath may be coated with a resilient, elastomeric layer.

REFERENCES:
patent: 702255 (1902-06-01), Stockman
patent: 4360301 (1982-11-01), Mosberger
patent: 4840522 (1989-06-01), Kurihara
patent: 5085547 (1992-02-01), Vanotti
patent: 5345734 (1994-09-01), Tremblay
patent: 5490750 (1996-02-01), Gundy

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