Supporting brackets for cable raceways

A cable raceway adapted to be supported form pre-existing internal building structures, said raceway including

• a plurality of channel members, each said channel member being formed of stiff sheet material and including a bottom portion, sides extending upwardly from said bottom portion, and lips extending inwardly from said sides along the upper edges of said sides, thereby having a generally upright U-shaped cross-section,
• telescope members having a cross-section complementary to said channel members and being so shaped and dimensioned as to telescopically interfit with said channel members, the extent of said interfit being continuously variable, each said telescopic member being formed of stiff sheet material and including a bottom portion, sides extending upwardly from said last-named bottom portion, and lips extending inwardly from said sides of said telescoping members along the upper edges of said last-named sides, thereby having a generally U-shaped cross-section, said telescope members each telescopically joining two said channel members at the respective proximate ends thereof, and
• brackets having securing means proximate to the upper ends of said brackets for supporting said channel members and said telescope members from said building structures at spaced intervals, said building structures being floor-supporting pedestals, said brackets having openings at their upper ends for receiving the upper ends of said pedestals, and said brackets having downwardly-extending sides leading to open and upright U-shaped lower ends dimensioned to receive said channel members with their respective said upper edges being uppermost,
• whereby said raceway has telescopic length flexibility for easy installation.