Patents Assigned to Progressive Plastics, Inc.
  • Multiple bowl arrangement for water pipe or bong
    Patent number: 4171703
    Abstract: A multiple bowl arrangement for a water pipe, bong or other smoking device in the form of a mounting base in place of the conventional bowl and a turret or magazine with multiple bowls rotatably mounted on the base so that each bowl is brought into successive, selective registry with the primary smoke inlet passageway of the smoking device. Visual indicators may be provided on the base and the turret to assure registry of any one bowl in use with the primary smoke inlet passageway of the smoking device.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: October 23, 1979
    Assignee: Progressive Plastics, Inc.
    Inventor: Frank B. Locke