US Patent 8939925 Tightening system for an orthopedic article

A tightening system and method for operating the same in an article for a wearer includes first and second members arranged for being connected at first ends, and separated by a distance at second ends. A tension element connects the first and second members. A tensioning mechanism is mounted on the first member and coupled to the tension element. The tensioning mechanism includes a housing and a retractable and extendable line arranged to be extended from the housing and automatically retract to the housing upon release of the line to permit one-way incremental winding of the tension element to thereby draw the first and second members closer to one another by reducing the distance therebetween.