Threaded mounting for extruded pole

DETAILED DESCRIPTION The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1.
An assembly comprising: a tubular member and a plate member releasably locked to said tubular member.
the tubular member having a plurality of spaced-apart longitudinal partial first bores integral therewith; the plate members having a plurality of second bores therein, each second bore being aligned with a partial first bore of said tubular member, to form an aligned bore passage; a spindle housed in each aligned bore passage and extending into the partial first bore and second bore thereof; means connected to the tubular member to close said partial first bores to mount each said spindle to said tubular member; and locking means engaging each said spindle and said plate member such that said plate member is releasably locked to said tubular member.
2.
An assembly according to claim 1, wherein said tubular member is an elongate extruded member having an extruded tube wall and a plurality of pairs of elongate rib members co-extruded with said wall, an arcuate race formed between the rib members of each pair defining said partial first bore, and a separately formed elongate clamp member matingly secured to each rib of a pair and complementary to said race to complete the first bore partly defined thereby.
3.
An assembly according to claim 2, wherein said first bores and said spindles are in threaded engagement.
4.
An assembly according to claim 3, wherein each rib of a pair comprises: a body terminating in a tongue, a flange extending from said body and spaced from said tongue to define a channel therebetween, and each said clamp member comprises: a body portion having a head terminating in opposed ears, and a trough defined between said body portion and each ear, each said clamp member being force-fittingly slid on a pair of ribs with a said tongue of each rib of said pair engagingly received in a said trough of said clamp member, and each ear received in a said channel