Line extension and retraction mechanism

摘要

A line retraction and extension mechanism utilizing a housing having a chamber which possesses a predetermined dimension. The housing includes an entrance which leads to the chamber within. An elastomeric line is capable of passing into the chamber through the chamber entrance. A first end portion of the elastomeric line extends outwardly from the chamber while a second end portion of the elastomeric line is fixed relative to the chamber dimension. Internal structural elements in the chamber extend or store the elastomeric line to a predetermined degree to allow a large separation between the first end portion of the line and the housing when tension is applied between the housing and the first end portion of the line.