GLUELESS JOINING DEVICES FOR INTERLOCKING WITH HOLLOW SHAFTS

摘要

A glueless shaft joining system, apparatus and method are disclosed. An expandable insert, half-out insert or outsert is disposable at least partially into the inside of the shaft of an arrow or other tubular member such as a golf club shaft. A set screw can be proximally threaded inwards from a distal end of the insert to expand finger elements to lock the insert and arrowhead attached thereto in place. A component, such as a broad head or arrow nock can be coupled to the insert as desired.

主权项

1. A glueless shaft interlocking mechanism for a shaft having a hollow interior, comprising:
a base insertable into the hollow interior of the shaft, the base including a distal end disposable into the hollow interior of the shaft, a proximal end opposite the distal end, and a plurality of flexible fingers separated by a slot defined between adjacent fingers, the slots extending from the distal end towards the proximal end, the base having a hollow interior extending though an entire longitudinal length of the base, the interior including a threaded portion adjacent to the distal end and extending inwards in a proximal direction therefrom; and a set screw insertable into the threaded portion of the hollow interior of the base, the set screw comprising:
a head portion and a tail portion, the head portion being threaded and having a diameter such that no deflection of the flexible fingers occurs due to the head being disposed within the hollow interior of the base, the head portion defining a tool receiving recess therein which is oriented toward the proximal end of the base when the set screw is threaded into the base; anda tail portion, the tail portion of the set screw including a non-threaded outer surface that diverges as it extends distally away from the head of set screw such that the outer surface of the set screw deflects the finger portions of the base laterally outwardly as the set screw is advanced in the proximal direction through at least a part of the threaded portion of the base.