  In this study, we investigate the existence theorems for timelike ruled
surfaces in Minkowski 3-space. We obtain a general system and give the
existence theorems for a timelike ruled surface according to Gaussian
curvature, distribution parameter and strictional distance. Moreover, we give
some special cases such as the directirx of the surface is a geodesic, an
asymptotic line, a line of curvature or a general helix.
