Panel joint

A panel joint, comprising:

• first and second non metallic upstanding panel members having front and back surfaces, and vertically extending side portions, said first and second panel members being arranged at right angles, with selected vertical side portions adjoining one another, with the back surfaces of the panels on the outside of the right angle configuration,
• a plurality of first spacer members having head and shank portions, said first spacer members being fixed to the back surface of said first panel member, in spaced relation with one another along the side portion which adjoins the second panel member, with their head portions spaced from the back surfaces of the first panel member,
• a plurality of second spacer members having head and shank portions, and a tapered cam surface which tapers inwardly from the head portion to the shank portion, said second spacer members being immovably fixed to the back surface of said second panel member, in spaced relation with one another, and adjacent to the side portion which adjoins the first panel member, and
• an elongated right angle joining member having first and second leg portions which define a corner portion at their intersection,
• said first leg portion having a plurality of spaced elongated first slots, the sides of which are parallel with the corner portion,
• said second leg portion having a plurality of spaced elongated second slots, with each of said second slots including a first portion having sides which are parallel with one another but inclined relative to the corner portion, an enlarged spacer head receiving portion, and a third portion which defines a tapered transition between the first and second portions,
• said plurality of first spacer member extending through the plurality of first slots such that said joining member is captured by, but vertically slidable relative to, said first panel member,
• said head portions of the second spacer members being insertable through the enlarged spacer head receiving second portions of the second slots, with the tapered transitions thereof cooperating with the cam surfaces of the second spacer member such that an initial downward movement of the joining member will cam the back surface of said second panel member against the second leg portion of the joining member, and continued downward movement will cause the inclined slots of the second elongated slots to cooperate with the shank portion of the second spacer members to force the first and second panel members tightly together.