Patents Assigned to Pacemark, Inc.
  • Sealant for pneumatic inner tubes and tubeless tires
    Patent number: 5226958
    Abstract: The present invention provides mobile sealant compositions that are particularly useful for bicycle tire tubes and the like. The improvements include a novel particulate for use in the sealant composition that is greatly conformable for closing pores in a plug. Another improvement includes a balanced fiber composition as part of the sealant. Also, the carrier fluid is formulated to substantially reduce losses due to gaseous diffusion by preferably utilizing high levels of ethylene glycol, such as greater than about 60 percent.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: July 13, 1993
    Assignee: Pacemark, Inc.
    Inventors: Ronald R. Bowman, Brian C. Bowman