Patent ID: 8533919
Filing Date: 2013-09-17
Classification: F16B,Y10T

Abstract:
1. A holding element for fastening in a hole, the holding element comprising: a central shaft having a far end and a free end, the central shaft extending along a longitudinal axis between the far end and the free end, multiple supporting parts located at the far end of the shaft, the supporting parts located centrally on either side of the shaft and extending transverse to a central plane of the shaft, and multiple arms each including a distal end and a proximate end and a radially outward peripheral edge surface extending from the proximate end to the distal end and defining a first arc length, each arm flexibly fastened to the shaft at the proximate end by an integral joint defining a second arc length substantially less than the first arc length, wherein the arms each extends transverse to the longitudinal axis for a distance from the shaft and the integral joints fastening the arms to the shaft individually define elastically bendable crosspieces arranged on opposite sides of the shaft at lateral edges of the shaft; and wherein each arm includes on a front a flat front surface and an inclined and curved ramp surface and on a back a flat back surface parallel to the front surface, the arm being limited by an edge surface convexly curved radially outward with reference to the longitudinal axis which is smoothly converted into the outer surface of the crosspiece, and a supporting surface defining an end of the inclined and curved ramp surface extending freely away from the crosspiece and facing the shaft transverse to the longitudinal axis such that the supporting surface contacts the shaft to limit a movement of the arm toward the shaft.