Inversion exerciser

Abstract

An inversion exerciser includes: a beam having a pivot part formed with retaining grooves angularly displaced along an arcuate track; a foot retaining part pivoted to the pivot part relative to the beam about a first axis; a swingable part having first and second end portions and pivoted to the foot retaining part about a second axis parallel to the first axis; a locking pin extending transversely and secured to the first end portion of the swingable part as to be co-rotatable with the swingable part to engage and disengage a selected retaining groove; an urging member for biasing the swingable part to retain the first locking pin in the selected retaining groove; and a releasing member mounted movably on the foot retaining part and connected to the second end portion of the swingable part.

1 . An inversion exerciser comprising:
 a beam having a pivot part that is formed with a plurality of retaining grooves which are angularly displaced along an arcuate track;   a foot retaining part pivoted to said pivot part so as to be rotatable relative to said beam about a first axis;   a swingable part having first and second end portions and a middle portion extending between said first and second end portions and pivoted to said foot retaining part so as to permit rotation of said swingable part relative to said foot retaining part about a second axis parallel to said first axis and so as to permit co-rotation of said swingable part and said foot retaining part about said first axis;   a first locking pin extending transversely relative to said swingable part and secured to said first end portion of said swingable part so as to be co-rotatable with said swingable part to thereby engage and disengage a selected one of said retaining grooves;   a first urging member for biasing said swingable part to rotate in a first rotation direction to retain said first locking pin in the selected one of said retaining grooves; and   a releasing member mounted movably on said foot retaining part and connected to said second end portion of said swingable part for rotating said swingable part in a second rotation direction opposite to said first rotation direction so as to disengage said first locking pin from the selected one of said retaining grooves.   
   
   
       2 . The inversion exerciser as claimed in  claim 1 , wherein said first urging member interconnects said first end portion of said swingable part and said foot retaining part. 
   
   
       3 . The inversion exerciser as claimed in  claim 1 , wherein said releasing member is movable relative to said foot retaining part along a straight path, and is operable to move in a first direction along said straight path to rotate said swingable part about said second axis in said second rotation direction, said inversion exerciser further comprising a second urging member for biasing said releasing member to move in a second direction opposite to said first direction so as to rotate said swingable part about said second axis in said first rotation direction. 
   
   
       4 . The inversion exerciser as claimed in  claim 1 , further comprising a safety lock including a swingable plate that has a heavy end portion, a light end portion opposite to said heavy end portion, and a middle portion extending between said heavy and light end portions and pivoted to said swingable part so as to permit rotation of said swingable plate relative to said swingable part about a third axis parallel to said first and second axes, said safety lock further including a second locking pin that is secured to said light end portion of said swingable plate and extending transversely relative to said swingable plate, said heavy end portion having a weight greater than that of said light end portion so as to permit rotation of said swingable plate about said third axis by gravity.