US Patent 7810514 Connector for tent poles

A connector for tent poles has a body consisting of a single piece on the whole, an approximate half part of the body constituting a first connection part which a single pole assembly passes through and is connected to, the other approximate half part of the body constituting a second connection part to which another pole assembly or a clip is connected, a pivot hole consisting of a base hole formed through the first connection part in a direction traversing a longitudinal axis of the body and having a size corresponding to an outer diameter of the pole assembly at a central point of a cross section of the first connection part and an expansion hole widely expanded in a radially outward direction of the body from both front and rear sides of the base hole so as to correspond to a swiveling trajectory of the pole assembly so that the pole assembly is able to swivel by a predetermined angle on any plane intersecting the longitudinal axis of the body, around the base hole of a swivel center, and pivot protrusions that are fitted into a gap between an end face of a male pole and an end face of a female pole of the pole assembly so as to serve as a pivot point combining the swiveling and position-fixing functions of the pole assembly, have respectively a cam surface following a swiveling trajectory delineated by the two end faces and are formed at two points opposite to each other in the base hole of each pivot hole.