Patents Assigned to Ida Engineering, Inc.
  • Patent number: 4102533
    Abstract: This invention relates to an improved racquet frame of the type having a stringable head characterized by a construction wherein said head comprises a loop formed intermediate the ends of an elongate rod of springable material, said end portions being crossed over one another to define the throat and then bent into spaced substantially parallel relation to produce the handle. Means are interposed between the handle-forming limbs within the throat operative upon actuation to vary the spacing therebetween and thus enlarge or reduce the size of the head thereby varying the string tension to suit the wishes of the user. The crossed over section at the juncture between the head and handle have opposed surfaces thereof cut away to produce elongate notches that cooperate with one another to define a string-receiving slot therebetween atop which is placed an apertured member, the apertures of which overlie the slot and maintain the strings in fixed-spaced relation within the crossed over section.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: July 25, 1978
    Assignee: Ida Engineering, Inc.
    Inventor: Noble N. Ida