Grating assembly with bi-directional bandwidth control

摘要: A bidirectional bandwidth controlled grating assembly. spring housing is connected to one of two end plates extending away from the lined surface grating. An adjustment rod threaded through other plate extends into housing. Inside in a preferred embodiment are compression springs mounted between pressure surfaces and piston which fixed on rod. The can be made more concave (or less convex) by screwing direction compressing push apart convex concave) out pull toward each other.