E - Fixed Constructions – 21 – F
Patent
E - Fixed Constructions
21
F
E21F 1/14 (2006.01)
Patent
CA 2328552
A stopping system for use in mines. The stopping system includes a king post truss for reinforcing the stopping panels against excessive deflection due to a pressure differential across the stopping panels. The truss has a variable length to accommodate convergence and divergence of the mine walls on which the truss is mounted.
Kennedy John M.
Kennedy William R.
Jack Kennedy Metal Products And Buildings Inc.
Smart & Biggar
LandOfFree
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