Abstract: A supporting mount for a tilting body inversion frame having standing means and spaced trunnion-bearing plates in an elevated position for bearing the trunnions carried by the tilting body inversion frame. Each of the trunnion-bearing plates has a blind slot for receiving and bearing the trunnions. At least one of the trunnion-bearing plates further include a keeper movable relative to the trunnion-bearing plate between locking position and open positions. The keeper has at one end a hook portion which in locking position secures the respective trunnion in bearing engagement, and at the other end a lever portion extending away from the trunnion-bearing plate, and in-between an axial portion through which the keeper is pivotally connected onto the outer side and proximate to the upper end of the trunnion-bearing plate.

Abstract: The present invention provides a back exercise machine, which includes a support frame, a footrest, a protrusion device, and a grasping device. The support frame is disposed with a main post thereon. The footrest is mounted on a front end of the support frame. The protrusion device, which is composed of at least two struts pivotally interconnected with one another, is pivotally connected with the main post of the support frame for rendering a raising action and is installed with at least one elastic member between the struts for resiliently self-rebounding. The grasping device is mounted on the protrusion device for the user's two hands holding. In operation, the back exercise can raise the user's back to completely stretch the user's back extensor muscles so as to get rid of weariness by means of the protrusion device's struts pivoting with one another.

Abstract: The present invention provides a back exercise machine, which includes a support frame, a footrest, a protrusion device, and a grasping device. The support frame is disposed with a main post thereon. The footrest is mounted on a front end of the support frame. The protrusion device, which is composed of at least two struts pivotally interconnected with one another, is pivotally connected with the main post of the support frame for rendering a raising action and is installed with at least one elastic member between the struts for resiliently self-rebounding. The grasping device is mounted on the protrusion device for the user's two hands holding. In operation, the back exercise can raise the user's back to completely stretch the user's back extensor muscles so as to get rid of weariness by means of the protrusion device's struts pivoting with one another.

Abstract: A foot-holding assembly of a body inversion exercise equipment having a collapsible base seat and a rotatable support assembly pivotally mounted on the base seat comprises an adjusting bar and an operating bar. The adjusting bar has an end thereof fastened to the rotatable support, a footrest disposed at distal end thereof, and a pivoting seat adjacent to said footrest. The operating bar is pivotally connected at one end thereof to said pivoting seat of said adjusting bar and has a curved segment formed from said one end of the operating bar toward another end of the operating bar with a predetermined length.