US Patent 5,409,044, granted to Yao-Chang Lin of Taichung, Taiwan, on April 25, 1995, for a circular loom with improved shuttle retention. The invention adds inner and outer guide rod units between the upper and lower ring plates of the endless raceway, so the shuttle cannot be pulled out of the raceway by centrifugal force and weft tension. The scan has a USPTO database printout (text and claims) plus the patent itself, with 13 sheets of drawings (Figs. 1-6 prior art, Figs. 7-13 five embodiments), background, summary, detailed description and claims.