Patents by Inventor Juan C. Costa

Juan C. Costa 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: 5002278
    Abstract: A racket for striking a ball that has an outer frame and a inner frame attached to the outer frame between at about a 10 o'clock position and a two o'clock position. The outer and inner frames are ovoid shaped with the small end of the ovoid shape toward the crown of the outer frame. There are a plurality of first and second port means and a plurality of chamber means to facilitate stringing of a ball engaging webbing. The racket has a bifurcated extension attached to a shaft which is attached to a handle. The flexing leverage is introduced at the crown instead of at the handle allowing the ball to remain on the strings longer to yield greater accuracy and power. The inner frame tends to align in parallel with the longitudinal axis of the handle at the approximate moment of the impact of the ball when the lower part of the inner frame flexes past the outer frame.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: March 26, 1991
    Inventor: Juan C. Costa