Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Securing means pivotable about axis transverse to fastener...
Patent
1987-06-01
1989-05-30
Gall, Lloyd A.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Securing means pivotable about axis transverse to fastener...
411908, 411913, F16B 2100
Patent
active
048346012
ABSTRACT:
A wall fastener comprising a hollow conical member, a cylindrical sleeve member disposed substantially within the conical member, an anchoring member attached to the sleeve member for engaging the inner surface of a hollow wall and a rotatable threaded member extending through aligned openings in the conical member, sleeve member and anchoring member for tightly securing the fastener to the wall. The anchoring member is comprised of a central housing and a plurality of resilient curved feet flared outwardly from the housing. The feet are bendable toward the axis of the threaded member to allow the anchoring member to be inserted through a hole in the wall. When the anchoring member has cleaned the hole, the feet are spring-biased to return to the outwardly flared position to engage the inner surface of the wall. As the threaded member is tightened, the feet are compressed against the inner surface of the wall, which causes the feet to flatten and expand outwardly to engage the inner surface of the wall at a greater distance from the hole, thereby providing a more secure attachment of the fastener to the wall. The conical member, sleeve member and anchoring member are fixed against rotation with respect to the threaded member to prevent the fastener from damaging the wall in the event that the threaded member is over-torqued.
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Brueske Curtis B.
Gall Lloyd A.
McCord W. Kirk
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