Disengagement resistant telescoping assembly and unidirectional method of assembly for such

摘要

Extension rods of a telescoping assembly (TSA) may be assembled in a single direction. The rods may optionally be threaded together from a reverse extended configuration. The rods may optionally resist disattachement during extension. The inner rod may optionally included a leading fastener and/or the outer rod may optionally include a rear fastener. Each rod may optionally be molded as a single piece. End caps may optionally be added to the TSA after extension of the rods. An end cap may optionally include a rotation stopper. In some embodiments the TSA may include a supporting shoulder.

主权项

1. A method of assembling a telescoping screw comprising:
sliding a leading end of an inner rod through a rear end of a mid rod, threading an external thread of the inner rod with an internal thread proximate a leading end of the mid rod; sliding the leading end of said mid rod into a rear end of an outer rod, threading an external thread of the mid rod with an internal thread proximate, a leading end of the outer rod, such that said leading end of said inner rod is accessible from the leading end of said outer rod, and fastening a first end cap onto said leading end of said inner rod, wherein the inner rod includes a rear flange at the rear end thereof slidable through a portion of the mid rod and being wider than the internal thread of the mid-rod, thereby being prevented from further advancement upon direct contact therewith, and the mid-rod includes a rear flange at the rear end thereof slidable through a portion of the outer rod and being wider than the internal thread of the outer rod, thereby being prevented from further advancement upon direct contact therewith.