Folding step exerciser

Abstract

A folding step exerciser includes a base including a front square socket projecting upwardly and including front and rear apertures, a horizontal support extending rearward from the support, and a transverse tube on the support adjacent rear of the socket; left and right handlebars; an upright having a top end adjustably secured to the handlebars; a pivot fixedly secured around a bottom end of the upright, the pivot having a U-shaped cross-section and including a front surface, a cavity on a bottom edge of the front surface, two triangular side surfaces, and a hole at a rear pointed end of either side surface; a bolt adapted to drive through one hole, the tube, and the other hole to pivotably secure the pivot and the socket together by cooperating with a nut, and a fastener adapted to threadably fasten the pivot and the socket together.

1 . A folding step exerciser comprising:
 a base including a front square socket projecting upwardly and including front and rear apertures, a horizontal support extending rearward from the support, and a transverse tube mounted on the support adjacent a rear of the socket;   left and right handlebars;   an upright having a top end adjustably secured to the handlebars;   a pivot fixedly secured around a bottom end of the upright, the pivot having a U-shaped cross-section and including a front surface, a cavity on a bottom edge of the front surface, two triangular side surfaces, and a hole at a rear pointed end of either side surface;   a bolt adapted to drive through one hole, the tube, and the other hole to pivotably secure the pivot and the socket together by cooperating with a nut, and   a fastener adapted to threadably fasten the pivot and the socket together.   
     
     
         2 . The folding step exerciser of  claim 1 , further comprising a pad mounted on the support. 
     
     
         3 . The folding step exerciser of  claim 1 , wherein the fastener comprises a wing head, a tapered shank, and threads on a rear portion of the shank, wherein the shank has a diameter slightly larger than a width of the cavity, and wherein the cavity is aligned with the apertures when the upright stands upright such that driving the fastener through the front and rear apertures until the head urges against the cavity by rotating the head will secure the pivot and the socket together by cooperating with a second nut. 
     
     
         4 . The folding step exerciser of  claim 1 , wherein a bore of the tube is larger than a diameter of a shank of the bolt for causing no interference when the bolt rotates in the tube.