Elastic Cord for a Pull Exerciser

Abstract

An elastic cord includes a hollow outer elastic cord having a first end and a second end spaced from the first end in a longitudinal direction. The hollow outer elastic cord further includes a hole extending from the first end thereof through the second end thereof. The hollow outer elastic cord further includes an outer periphery and an inner periphery spaced from the outer periphery in a radial direction perpendicular to the longitudinal direction. A rib is provided in the hole of the hollow outer elastic cord and extends from the first end through the second end of the hollow outer elastic rod. The rib includes a first portion connected to the inner periphery of the hollow outer elastic cord and a second portion connected to the inner periphery of the hollow outer elastic cord.

1 . An elastic cord comprising a hollow outer elastic cord including a first end and a second end spaced from the first end in a longitudinal direction, with the hollow outer elastic cord further including a hole extending from the first end thereof through the second end thereof, with the hollow outer elastic cord further including an outer periphery and an inner periphery spaced from the outer periphery in a radial direction perpendicular to the longitudinal direction, with a rib provided in the hole of the hollow outer elastic cord and extending from the first end through the second end of the hollow outer elastic rod, and with the rib including a first portion connected to the inner periphery of the hollow outer elastic cord and a second portion connected to the inner periphery of the hollow outer elastic cord. 
     
     
         2 . The elastic cord as claimed in  claim 1 , wherein the rib further includes a third portion connected to the inner periphery of the hollow outer elastic cord. 
     
     
         3 . The elastic cord as claimed in  claim 2 , wherein the rib has substantially Y-shaped cross sections perpendicular to the longitudinal direction. 
     
     
         4 . The elastic cord as claimed in  claim 2 , wherein the rib further includes a fourth portion connected to the inner periphery of the hollow outer elastic cord. 
     
     
         5 . The elastic cord as claimed in  claim 4 , wherein the rib has substantially cruciform cross sections perpendicular to the longitudinal direction.