Patent ID: 8870289

Claim:
A foldable leg rest comprising: a slide base including: a slide frame having two sides and a front end; and two supporting arms respectively slidably mounted on the sides of the slide frame and each supporting arm having: a front end; a projection extending from the front end of the supporting arm; and a rolling bearing and a roller mounted on the projection; a first folding assembly including: a first frame having: a front end; a rear end pivotally connected to the front end of the slide frame; and a bottom surface having two side portions; and two guide pieces respectively secured to the side portions of the bottom surface of the first frame and each guide piece having a guide slot for allowing the projection of a corresponding supporting arm to extend therethrough and to move therealong; a second folding assembly including a second frame having a rear end pivotally connected to the front end of the first frame; a first stage drive mechanism mounted on the slide base and operated to drive the supporting arms to slide relative to the slide frame and to make the projections of the supporting arms move along the guide slots of the guide pieces so that the first frame is pivoted relative to the slide base; and a second stage drive mechanism mounted on the first frame and operated to drive the second frame to pivot relative to the first frame.