Resilient device for door handle and knob

A resilient device for a door knob or a door handle, comprising:

• two outer plates, each having a first center opening;
• two intermediate plates stacked and sandwiched between said outer plates, each intermediate plate having a second center opening whose diameter is larger than that of said first center opening and a first radial slot on said second center opening's circumference, said second center openings thereby forming a space between said outer plates;
• a rotational seat rotatably housed in said space, said rotational seat having a flat piece surrounded by a wall so as to form an H-shaped cross section and two diametrically opposing blocks positioned along an outer surface of said wall, said flat piece having a third center opening whose diameter is smaller than that of said first center opening, said third opening having saw-toothed circumference, at least one of said blocks having a second radial slot;
• and
• a spiral spring positioned in a gap between said rotation seat and said intermediate plates, said spiral spring's two ends embedded in said first and second slots, respectively;
• wherein an axle of said door knob or said door handle is extended inside and locked to said third center opening via said first center openings;
• when said door knob or said door handle is turned, said rotational seat is turned as well to tighten said spiral spring;
• and, when said door knob or said door handle is released, said spiral spring expands to restore said door knob or said door handle back to an original, un-turned state.