The pulsed wind is an intrinsic mechanism for removing gas from elliptical galaxies and is based upon the suggestion that Type I supernovae originate in a young stellar population. In this model, a period of gas accumulation is followed by cooling and star formation which is followed by a burst of supernova activity and a short-lived but intense wind. The process repeats on a time scale of (5--10) x 10/sup 8/ years. The model leads naturally to a bimodal distribution of elliptical galaxies in neutral hydrogen content, with ellipticals being either ''gas rich'' at the level of 10/sup 8/--10/sup 9/ M/sub sun/ of H I or ''gas poor'' with essentially no neutral hydrogen.