Patent ID: 7431358

Claim:
A non-metallic adapter facilitating rotation of a door knob having a supporting shaft, said adapter comprising: a cap; the cap being adapted to receive the knob; a handle extending outwardly from the cap; a pressure ring adapted to pass over and around the supporting shaft, the cap adapted to be frictionally attached to the knob by axial force between the ring and the cap producing a required frictional engagement; the pressure ring being formed having substantially C-shaped configuration having two end walls separated by a gap and having inner and outer walls and an inner space formed therebetween; wherein a plurality of stiffening members extends within said inner space between said inner and outer walls separating the inner space of the pressure ring into a plurality of substantially isolated areas, a plurality of reinforcing members disposed within said inner space, the width of each said reinforcing member being substantially greater than the width of the respective stiffening members; and to enhance structural strengths of the pressure ring distal reinforcing members are positioned adjacent to the respective end walls, and said reinforcing member situated in a central part of the pressure ring is disposed between two adjacent stiffening members.