Patents Assigned to Thomas I. Baldwin
  • Apparatus for making hot asphalt paving material
    Patent number: RE29496
    Abstract: Hot asphalt paving material is made in a rotary drum mixer which has a burner at the aggregate-introducing end and an interior transverse flame shield in the path of the burner to divide the rotary drum into a drying section and a mixing section. Means are provided in the mixing section for introducing asphalt cement into the dried aggregate material and for agitating the mix. Exhaust gases from the mixing section are passed through a heating and cooling heat exchanger and returned to the burner.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: December 20, 1977
    Assignees: Thomas I. Baldwin, Frank P. Scrivener, William E. Baldwin
    Inventor: Michael Dydzyk