Patents by Inventor Derek Murray Squires

Derek Murray Squires 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).

  • System for processing big refuse such as a spring-containing mattress and the like
    Patent number: 6016979
    Abstract: A system of processing big refuses such as spring-containing mattresses according to the present invention includes a crushing process for crushing big refuses such as spring-containing mattresses by a single axial crusher capable of crushing them into a certain particle size or less, a magnetic-force grading process for grading iron material by a magnetic-force grader from crushed pieces crushed in said crushing process, and a wind-force grading process for removing light-weight refuses such as fiber adhering to iron material graded in said magnetic-force grading process by a wind-force grader.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: January 25, 2000
    Assignees: Integrated Recycling Systems Ltd., Fuji Car MFG. Co., Ltd.
    Inventors: Derek Murray Squires, Kanichi Saito, Shinji Otuji