sentences:  In the 1930s Phelan took over and ran the Taylor Company, now a subsidiary of Carrier Corporation, manufacturer of conventional and soft serve commercial ice cream freezers.In 1946 he organized more than 40 of Taylor's employees as Tekni-Craft, one of America's first worker cooperatives, to which he sold Taylor's manufacturing and distribution rights.Phelan also invented the "Zest-O-Mat" frozen custard freezer and founded Zesto Products Dairy, which grew into a chain of more than 50 drive-in restaurants.