Sports racquet with insert members for anchoring strings
The sides of a sports racquet, and optionally the tip and throat bridge, include axially extending cutout portions. An insert member, having a plurality of string port holes and optionally conventional string holes, is seated in each cutout portion. The frame and insert member are preferably formed of different materials.
1 . In a sports racquet comprising:
a tubular frame including a head portion defining a stringing area and a handle portion coupled to said head portion;
a first set of string segments extending at least generally parallel to one another in a first direction; and
a second set of string segments extending at least generally parallel to one another in a second direction which is at least generally perpendicular to said first direction, said first and second set of string segments being interwoven to form a string bed lying generally in a string bed plane;
the improvement wherein said head portion includes a cutout portion that includes a seat surface, and wherein said racquet further comprises an insert member having at least one string port formed therein, having an axis at least generally parallel to said string bed plane, with opposed first and second bearing surfaces for receiving a pair of string ends of said first set of string segments, respectively, to provide a predetermined spacing between said string segments, and a third bearing surface to engage said seat surface to counter the pulling force of the strings when tensioned.
2 . A sports racquet as defined in claim 1 , wherein said head portion includes a pair of opposed sides, wherein each side includes a cutout portion and corresponding insert member, and wherein the string ports of insert members on opposite sides of the string bed are offset relative to one another such that a string segment adjoining one bearing surface of one string port, after crossing the string bed, bears against the opposite bearing surface of another string port.
3 . A sports racquet according to claim 2 , wherein each insert member includes a plurality of string ports.
4 . A sports racquet as defined in claim 3 , wherein said head portion includes a tip region having a cutout portion and corresponding insert member.
5 . A sports racquet as defined in claim 4 , wherein said head portion includes a throat bridge having at least one string port formed therein, said string port being offset relative to a string port of the insert member in the tip region.
6 . A sports racquet as defined in claim 5 , wherein the throat bridge has a pair of ends, each end comprising a pair of end portions with a space therebetween lying in said string bed plane to allow at least one string to pass through.
7 . A sports racquet as defined in claim 3 , wherein said head portion includes a throat bridge having at least one string port formed therein, said string port being offset relative to a string port of the insert member in the tip region.
8 . A sports racquet as defined in claim 7 , wherein the throat bridge has a pair of ends, each end comprising a pair of end portions with a space therebetween lying in said string bed plane to allow at least one string to pass through.
9 . A sports racquet according to claim 1 , wherein said insert member further includes at least one string hole for receiving an end of another string of said first set of string segments.
10 . A sports racquet as defined in claim 1 , wherein said head portion includes a tip region which includes a cutout portion and corresponding insert member.
11 . A sports racquet according to claim 10 , wherein each insert member includes a plurality of string ports.