Patents by Inventor David I. Walsh

David I. Walsh 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).

  • Patent number: 5510143
    Abstract: A pattern is impressed on flocked fabric by applying a patterned cylinder to the flocked surface before the adhesive that retains the flocking has cured. The projections on the cylinder surface tilt the flock fibers contacted by them to a new orientation, thereby forming the pattern in the flocked surface. Subsequent curing of the adhesive preserves the pattern.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: April 23, 1996
    Assignee: Microfibres, Inc.
    Inventors: David I. Walsh, William F. Laird
  • Patent number: 4246308
    Abstract: The present invention relates to a method for producing a mixed flock fabric of different filaments in which highly curled filaments are straightened, sized, cut into a length of 0.1 to 0.4 inch and electrostatically flocked with non-sized fibres onto a substrate, so that when the size is removed, there is formed a mixed flock fabric having mixed, stiffened and individual fibres.
    Type: Grant
    Filed: March 21, 1979
    Date of Patent: January 20, 1981
    Assignee: Microfibres, Inc.
    Inventor: David I. Walsh
  • Patent number: 4014648
    Abstract: A continuous in-line flock cutting process is disclosed, for making flock from tow which contains a lubricant which is detrimental to the flock and must be removed.The tow is continuously fed, heat treated and immersed in an aqueous scouring liquid, and is continuously wet-processed. The excess scouring liquid is squeezed out, the tow is rinsed with water, rinse water is squeezed out, and a finish is applied to the tow and partially squeezed out in an in-line continuous process to remove a portion of the applied finish. Thus processed, the still-wet tow is continuously cut into wet flock, the wet flock is then dried and beaten to open up and separate the individual flock particles, and screened.
    Type: Grant
    Filed: November 8, 1974
    Date of Patent: March 29, 1977
    Assignee: Microfibres, Inc.
    Inventors: David I. Walsh, James P. Casey, George E. Corneau, William F. Laird
  • Patent number: 3973065
    Abstract: A synthetic suede is disclosed comprising a flexible backing having a multiplicity of upstanding flock fibers adhered to the base, and a fatty acid radical cationic softener substantially uniformly distributed over at least portions of the fibers at or near their ends. Typical cationic softeners include the fatty acid quaternary ammonium softeners.
    Type: Grant
    Filed: January 10, 1975
    Date of Patent: August 3, 1976
    Assignee: Microfibres, Inc.
    Inventors: David I. Walsh, James P. Casey