Patent ID: 9657764
Date: 2017-05-23
CPC Classifications: F16B,Y10T

Claim:
1. A fastening device for fastening an element in a keyhole-shaped cutout in a wall, the keyhole-shaped cutout having a narrower opening and a wider opening, the fastening device comprising: a retaining element having a first planar surface forming a first exterior planar surface of the fastening device, wherein in the fastened state of the fastening device, the first planar surface of the retaining element forming the first exterior planar surface of the fastening device is configured to directly contact and rest against a front side of the wall and at least partially cover an edge of the narrower opening of the keyhole-shaped cutout in the wall; and a locking element integrally formed with the first planar surface of the retaining element, the locking element extending perpendicularly from the first exterior planar surface of the fastening device and having a catch hook at an end located away from the first exterior planar surface, wherein in the fastened state of the fastening device, the locking element is configured to extend from the front side of the wall to the back side of the wall, across the wider opening of the keyhole-shaped cutout in the wall, such that the catch hook locks against a back side of the wall to secure the first planar surface of the retaining element against the front side of the wall and prevent relative movement between the first planar surface of the retaining element and the front side of the wall; wherein the locking element is at least partially enclosed by a protective element, and wherein the protective element is U-shaped around the locking element to cover at least the bottom surface of the locking element.