Patents Assigned to Olympic Engineering Co.
  • Apparatus for manufacturing non-woven fabric tubular filter
    Patent number: 4071394
    Abstract: A non-woven fabric web is converted to a tubular shape by forming the web between a cylindrical mandrel and surrounding sleeve, and passing reciprocating barbed needles through the region where the sides of the web abut each other, to form a butt joint thereat. The apparatus includes a pair of rollers for drawing the tubular shaped web between the mandrel and sleeve, as well as a motor and control circuit for operating the reciprocating needles.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: January 31, 1978
    Assignee: Olympic Engineering Co.
    Inventor: Harry Ball