held in place by a screwed member having an internal spherical surface

Adjustable joints; Joints allowing movement > Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction > with partly-spherical engaging surfaces > held in place by a screwed member having an internal spherical surface

Adjustable joints; Joints allowing movement (of the quick-acting type F16L37/50; for double-walled or multi-channel pipes or pipe assemblies F16L39/04 ) > Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction > with partly-spherical engaging surfaces > held in place by a screwed member having an internal spherical surface