Patents by Inventor Ashley P. Middleton

Ashley P. Middleton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for the treatment of plastic materials
    Patent number: 5494626
    Abstract: Expanded or foamed plastic material, such as expanded polystyrene, is fed into a hopper containing an auger which carries blades for cutting the plastic material into pieces and for feeding it into a chamber containing a vertically reciprocable piston and a horizontally reciprocable piston. The two pistons operate sequentially to effect compression of the plastic material and to feed the compressed material into the entry end of a horizontal chute. A hydraulically operated main ram is movable along the chute to effect additional compression of the plastic material and to displace it along the chute for discharge.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: February 27, 1996
    Assignee: Middleton Engineering Limited
    Inventor: Ashley P. Middleton