Patents by Inventor Todd Berdell Colburn

Todd Berdell Colburn 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: 5919104
    Abstract: A racquet with strings and a handle has at least a portion of the strung length of at least some of its strings at least partially within a cavity defined by the racquet's handle, and/or, in the case of a racquet having a shaft, a cavity defined by the racquet's shaft. Typically two, or some multiple of two, strings are extended in strung length by at least a portion of the length of the handle's (shaft's) cavity. The cavity may be but only slightly recessed into the handle (shaft), and may be nearly as long as is the handle (shaft) itself. Particularly in the case those racquetball racquets qualified by the 1996 rules of the American Amateur Racquetball Association to twenty one inches (21") in total length, each of preferably two or more "long" strings commonly extend at least fifteen and one-half inches (.gtoreq.51/2"), and may extend as long as twenty and one-half inches (>201/2"), in strung length by virtue of extending within the cavity of a hollow handle.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: July 6, 1999
    Assignee: EF Composite Technologies, L.P.
    Inventors: Raymond Lee Mortvedt, Ronald Alan Grimes, Todd Berdell Colburn