ApplicationNo. 948746 filed on 10/10/1997
US Classes:411/179, Nut penetrates substructure and anchors itself thereto (e.g., pierce nut)411/180, Nut deforms wall of preformed opening in substructure during assembly411/427INTERNALLY THREADED FASTENER ELEMENT, E.G., NUT, ETC.
ExaminersPrimary: Wilson, Neill R.
Attorney, Agent or Firm
Foreign Patent References
International ClassesF16B 037/04
Foreign Application Priority Data1997-03-12 DE
AbstractAn element, for example an element with a hollow body or a bolt element, in particular a nut element, for attachment to a plate-like component, has a ring-shaped recess or annular groove present at an end face of the element facing the component within a raised ring-shaped contact surface. At least one undercut is preferably provided in a side wall of the recess, and also features radial recesses and noses which extend into the ring recess providing security against rotation. A cylindrical punch section or pilot concentric to the central longitudinal axis of the element projects at the said end face within the ring-shaped recess and the outer boundary wall of the cylindrical punch section preferably has ring-shaped undercut. A material supply is formed at or adjacent to the free end face of the cylindrical punch section and is displaceable at least locally by means of a die button on insertion of the element into the ring-shaped recess in order to capture or clamp material of the component which has previously been deformed by the die button into the ring-shaped recess between itself and the base surface of the ring recess. In this way an improved security against rotation, an increased press-out resistance and an improved behavior against alternating loads in operation is achieved.
Field of SearchNut penetrates substructure and anchors itself thereto (e.g., pierce nut)
Nut deforms wall of preformed opening in substructure during assembly
Both cooperating regions deformed
INTERNALLY THREADED FASTENER ELEMENT, E.G., NUT, ETC.
Member anchors bolt in substructure with threaded portion exposed (e.g., stud bolt)
Fastener having a deformable portion or deforms substructure (e.g., prong)