| 摘要 |
construction engineering. SUBSTANCE: device has vertical suspension bracket made of paired members joined together for relative displacement and locking; upper paired member is made in the form of cantilever and lower paired member, in the form of knife incorporating ceiling-slab cutting depth limiter and locking member. Cantilever may have two horizontal arms; vertical arm and knife may be made in the form of plates bent along axis through 45-135 deg. and provided with ceiling- slab cutting depth limiter and with locking member on each of surfaces formed as result of bending the knife blade. EFFECT: simplified design; enhanced reliability and assembly effectiveness. 2 cl, 3 dwg
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