Patents Examined by D. Jones
  • Tank having fluid flow controlling apparatus
    Patent number: 5367719
    Abstract: A swim tank slightly longer than a human and slightly wider than the maximum spread between fingertips is divided into upper and lower channels by polycarbonate or members extending across the width of the tank and having a rectangular outlet at the top front through which water is expelled. A vaned wheel at the rear is driven by an induction motor from a power source of controlled frequency.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: November 29, 1994
    Assignee: SwimEx Systems Inc.
    Inventor: Seymour Mermelstein
  • Process for preparing filter rods
    Patent number: 4798570
    Abstract: An improved process for preparing fiber rods useful as cigarette filter tips comprises feeding a synthetic fiber tow through an air jet bulker directly into the garniture of a conventional cigarette filter making apparatus. The process allows production of filters with lower denier tow than has heretofore been possible while affording to the manufacturer greater versatility to change filter characteristics more readily.
    Type: Grant
    Filed: December 9, 1982
    Date of Patent: January 17, 1989
    Assignee: Hercules Incorporated
    Inventor: George Jurkiewitsch