Patents by Inventor Arthur Gerard Williamson

Arthur Gerard Williamson 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).

  • Crushing, material-reducing, grinding and like machines
    Patent number: 4042182
    Abstract: A crushing part or component of a gyratory grinder or other crushing, grinding or material-reducing machine is provided with a shock-absorbing backing material which has improved toughness and resilience and is formed of a filled polyurethane resin composition the resin component of which is derived from a cold-curing system comprisingI. at least one polyether polyol having more than 2--OH groups per molecule,Ii. at least one polyol containing both ester and ether groups and having more than 2--OH groups per molecule,Iii. at least one polyether diol andIv. at least one aromatic polyisocyanate, there being an excess of CNO groups over --OH groups in the system.
    Type: Grant
    Filed: December 2, 1975
    Date of Patent: August 16, 1977
    Assignee: Mazel Holdings Limited
    Inventor: Arthur Gerard Williamson