Spacer for resistance adjustment in resistance training apparatus

Abstract

A spacer may be provided for tension adjustment for apparatus for resistance training. The spacer may effect this adjustment by, e.g., changing the relative positions of some elements of the apparatus, which may thereby change the amount that a particular movement stretches an elastic band. The spacer may effectively shorten a connector supporting an arm supporting an elastic band serving as a resistance element in the resistance training apparatus. In embodiments, the spacer may be U-shaped; it may have a substantially flat lower surface and a sloped upper surface opposite the lower surface; it may have a first height and a second height that differs from the first height; and it may be configured to be capable of shortening the connector consequent to being removably clipped to the connector.

1 . A spacer for effectively shortening a connector supporting an arm supporting an elastic band serving as a resistance element in an apparatus used for resistance training, wherein:
 the spacer is U-shaped;   the spacer has a substantially flat lower surface and a sloped upper surface opposite the lower surface;   the spacer has a first height and a second height that differs from the first height; and   the spacer is configured to be capable of shortening the connector consequent to being removably clipped to the connector.   
     
     
         2 . The spacer of  claim 1 , comprising at least one groove, formed in the U, for securing the spacer to the connector. 
     
     
         3 . The spacer of  claim 2 , comprising two grooves configured to correspond to a connector comprising two substantially parallel lengths of flexible cord. 
     
     
         4 . The spacer of  claim 1 , wherein:
 the lower surface of the spacer is substantially parallel to a first notional plane;   the upper surface of the spacer is substantially parallel to a second notional plane intersecting the first notional plane at an angle; and   the angle is between 2 degrees and 10 degrees.   
     
     
         5 . The spacer of  claim 4 , wherein the angle is between 3 degrees and 8 degrees. 
     
     
         6 . The spacer of  claim 4 , wherein the angle is between 4 degrees and 6 degrees. 
     
     
         7 . The spacer of  claim 1 , wherein the spacer is made of a material selected from the group that consists of polyoxymethylene, epoxy resin, and polycarbonate. 
     
     
         8 . The spacer of  claim 7 , wherein the spacer is made of polyoxymethylene.