| 摘要 |
PCT No. PCT/AU82/00184 Sec. 371 Date Jul. 6, 1983 Sec. 102(e) Date Jul. 6, 1983 PCT Filed Nov. 11, 1982 PCT Pub. No. WO83/01803 PCT Pub. Date May 26, 1983.A building block or panel having the shape of a right parallelepiped having two opposed major faces (11), the remaining faces being edge faces which are formed to interlockingly engage with the edge faces of similar building blocks wherein two pairs of adjacent edge faces at opposed sides of the block are each formed with an elogate recess (13) extending from the respective corner of said adjacent edge faces to an intermediate location on each edge face, each edge face being formed with an elongate projection (15) which is able to be received in the recess (13) of a corresponding block; the one end (17) of each projection (15) adjacent the respective recess (13) being contoured to define at least a portion inclined at an angle of less than 90 DEG between the face and the base of the respective recess wherein the other end of each projection (15) has a face of a complementary configuration.
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