Patent ID: 6834894
Filing Date: 2004-12-28
Classification: B65H

Abstract:
A knot tying apparatus, comprising:a thread holding frame having a longitudinal axis and comprising: an engaging arm having a catch end positioning aligned with said longitudinal axis for slidably engaging a tying thread in position; a thread holder, which is extended from said engaging arm, having a rounded bottom end axially extended from said longitudinal axis and an arc-shaped holding groove communicating with said rounded bottom end wherein said holding groove is adapted for slidably holding said tying thread to form a loop thereof while said tying thread is capable of being released at said rounded bottom end of said thread holder; a resilient element provided between said thread holder and said engaging arm such that said engaging arm is capable of bending towards said thread holder to reduce a distance between said catch end of said engaging arm and said holding groove of said thread holder for providing a tension force on said loop of said tying thread, and a handle frame rearwardly extended from said thread holding frame and aligned with said longitudinal axis, whereby, when said loop of said tying thread is tensely formed at said catch end of said engaging arm and said holding groove of said thread holder, said thread holding frame is rotated about an object via said handle frame such that said tying thread is coiled around said object with predetermined number of turns in a tensely tight manner, so that said loop of said tying thread is adapted to be released at said holding groove of said thread holder through said rounded bottom end thereof while said loop of said tying thread is retained by said engaging arm until said tying thread is released as said tying thread is drawn tight to form a final knot on said object.