| 摘要 |
FIELD: building, particularly intrusion-protective fences. ^ SUBSTANCE: protective fence block comprises a number of annular serrated members. The members are spaced apart equal angular intervals one from another around common axis to create ball-like body. The serrated members are fixed at pole points of the ball-like member. Additional annular serrated member is inserted in the ball-like member. The member is installed along ball-like member equator. Protective fence includes screw spiral serrated member installed along perimeter of zone to be protected and located at border thereof. Ball-like blocks are inserted in the member. The ball-like blocks are made of annular serrated members spaced equal angular distances one from another about common axis so that annular serrated members are fixed in ball-like member pole points. Additional annular serrated member is inserted in each ball-like block and extends along ball-like body equator. ^ EFFECT: increased fence firmness and reliability, strength and protective reliability of fence units, as well as simplified fence installation process without sufficient cost increase. ^ 8 cl, 4 dwg |
