  This paper deals with a kind of design of a ruled surface. It combines
concepts from the fields of computer aided geometric design and kinematics. A
dual unit spherical B\'ezier-like curve on the dual unit sphere (DUS) is
obtained with respect the control points by a new method. So, with the aid of
Study [1] transference principle, a dual unit spherical B\'ezier-like curve
corresponds to a ruled surface. Furthermore, closed ruled surfaces are
determined via control points and integral invariants of these surfaces are
investigated. The results are illustrated by examples.
