# US 5,342,044 A · Game racket

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- Number: US 5,342,044 A
- Document ID: US5342044A
- Status: Granted
- Kind: A
- Application number: 08/092,819
- Filed: 1993-07-19
- Granted: 1994-08-30
- Earliest claimed: 1993-07-19
- Inventors: Chin-San You
- Web page: https://patentgrep.com/patent/US5342044A

## CPC

- A63B 49/022: String guides on frames, e.g. grommets
- A63B 49/02: Frames
- A63B 49/028: Means for achieving greater mobility of the string bed
- A63B 51/00: Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
- A63B 60/48: with corrugated cross-section
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A game racket with a head frame having an outer peripheral surface and an inner peripheral surface defining an oval area. The head frame is provided with a first set of string holes and a second set of string holes. Each of the second set of string holes is located below a center portion of two adjacent string holes of the first set. The outer peripheral surface is provided with a first groove and a second groove. A string is strung such that it is threaded through each pair of of the adjacent string holes of the same set through the oval area to crisscross and interlace each string section bridging two adjacent string holes located in the corresponding first or second groove.

## Claims

### Claim 1

A game racket comprising:
an elongated handle;
a head frame at an end of said handle forming a closed oval area, said head frame having an outer peripheral surface engaged to an inner peripheral surface which defines said oval area;
a cross-section through said outer peripheral surface and said inner peripheral surface being oval;
a plurality of string holes disposed in said head frame such that said string holes are grouped as a first set of string holes and a second set of string holes,
at least one string threaded through said string holes and extending across said oval area in a crisscross and interlaced pattern to form a string surface within said oval area;
said first set of string holes having axes located in a first plane parallel to and above said string surface, and said second set of string holes having axes situated in a second plane parallel to and below said string surface;
wherein each of said second set of string holes is respectively located below a center portion between two adjacent string holes of said first set of string holes;
a first groove in said first plane and on said head frame having a substantially semi-circular wall located below said outer peripheral surface;
a second groove in said second plane and on said head frame having a substantially semi-circular wall located below said outer peripheral surface;
said first groove and said second groove each having a length substantially equal to a length of said outer peripheral surface to protect the stringing and reinforce the structural strength of the frame against impacts with the playing surface;
said first set of string holes located in said first groove;
said second set of string holes located in said second groove;
wherein said string is threaded through said head frame such that said string enters and departs two adjacent string holes of said first set of string holes or said second set of string holes, and that said string has a string section bridging said two adjacent string holes so as to be received within said substantially semi-circular wall of either said first groove or said second groove.