Title:
Sports racquet
Kind Code:
A1


Abstract:
A sports racquet has a head including a frame defining a flat string area. The frame comprises a plurality of airflow openings in a direction substantially perpendicular to the plane of the flat string area. A plurality of interwoven strings are attached to the flat strung area by going through a plurality of holes that are parallel to the plane of the flat string area, and the strings do not go through the airflow openings.



Inventors:
Chullikattu, Jinan Kesavan (Bangalore, IN)
Application Number:
11/434903
Publication Date:
11/22/2007
Filing Date:
05/17/2006
Primary Class:
International Classes:
A63B49/14
View Patent Images:
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Primary Examiner:
CHIU, RALEIGH W
Attorney, Agent or Firm:
JACOBSON HOLMAN (WASHINGTON, DC, US)
Claims:
What is claimed is:

1. A sports racquet comprising a head including a frame defining a flat string area, wherein the frame comprises a plurality of airflow openings though its body in a direction substantially perpendicular to the plane of the flat string area.

2. The sports racquet of claim 1, wherein a plurality of interwoven strings are attached to the flat strung area by going through a plurality of holes through the periphery of the frame, the holes being parallel to the plane of the flat string area, and the strings do not go through the airflow openings.

3. The sports racquet of claim 2, wherein each of the airflow openings is located between the holes in the periphery of the frame.

Description:

FIELD OF THE INVENTION

The present invention relates in general to sports racquets, such as racquetball racquets, tennis rackets, squash racquets and badminton racquets, and more particularly to strung racquets having openings on the frame to increase the swing speed.

BACKGROUND OF THE INVENTION

Conventionally, a racquet comprises a head in connection with a handle through a throat portion. The head usually consists of a frame and a plurality of interwoven strings. The frame is provided with a number of stringing holes along the periphery thereof for attaching the strings. The stringing holes are substantially parallel to the plane of the head.

Increasing the swing speed of the racquet is important for the sports in which the racquet is used. Therefore, there is a need for increasing the swing speed of the racquet.

SUMMARY OF THE INVENTION

The object of this invention is to provide a racquet with increased swing speed than the racquets known in the art.

The aforementioned object is accomplished by a racquet according to the present invention which provides a special arrangement of airflow openings through the frame that are perpendicular to the plane of the flat strung area of the racquet. The racquet also includes a plurality of interwoven strings attached to the flat strung area by going through a plurality of holes that are parallel to the plane of the flat strung area, and the strings do not go through the air flow openings that are in a direction substantially perpendicular to the plane of the flat strung area.

These and other objects and advantages of the present invention will become apparent to those skilled in the art in view of the description of the best presently known mode of carrying out the invention as described herein and as illustrated in the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front elevational view of the racquet according to the present invention;

FIG. 2 is a partial side view of the head of the racquet according to the present invention; and

FIG. 3 is a partial enlarged perspective view of the frame of the head of the racquet according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1-2 of the drawings, the racquet comprises a head 10 in connection with a handle 24 through a throat portion 22. The head 10 consists of a frame 12 defining a flat string area 20, and. The flat string area 20 is surrounded by the frame 12. The frame 12 is in one plane so that the defined string area 20 is flat and in the same plane. The frame 12 can be made of any appropriate material, such as metal alloy or carbon fiber, and in any appropriate shape, such as round or oval. The cross section of the frame can be round, oval, rectangular, etc. For convenience of explanation, as shown in FIGS. 1-3, the frame has four side surfaces—a front surface 11, a back surface 13, an outer surface 17 and an inner surface 15. These surfaces can be flat, concave, or convex. In addition, the front and back surfaces 11, 13 can be narrower than the inner and outer surfaces 15, 17, depending on the design of the frame 12. The frame 12 has a plurality of string holes 18 through its body with exits on the inner and outer surfaces 15, 17 of the periphery, and in a direction that is parallel to the plane of the flat string area 20. Preferably, these string holes 18 are in one plane. The racquet head 10 further includes a plurality of strings 16 located in the plane of the flat string area 20. The strings 16 are attached to the frame 12 through these string holes 18 by interweaving with each other in conventional ways. For example, a string 16 goes into a string hole 18 from the inner surfaces 15 and comes out from the string hole 18 on the outer surface 17, then the same string 16 enters the next string hole from the outer surface 17 and emerges from the inner surface 16 of the frame to be interwoven with other strings, as shown in FIGS. 2-3.

Additionally, the frame 12 includes a plurality of airflow openings 14 through its body with the exits of the openings 14 on the front surface 11 and back surface 13, respectively. These airflow openings 14 are, preferably, perpendicular to the plane of the flat string area 20. The airflow opening can be of different sizes or shapes. Preferably, the airflow openings 14 are located between the string holes 18, as shown in FIGS. 2-3. Such location will ensure that the airflow openings 14 are not blocked by the strings 16 going through the string holes 18. It is important that the airflow openings 14 are not overlapped with the string holes 18 or in any way blocked by strings 16. Therefore, nothing blocks the airflow opening 14 in the frame 12 when the racquet is swung during use. Such arrangement of the airflow openings 14 will reduce the air resistance met by the racquet during swing and increase the swing speed of the racquet. Therefore, such racquet with airflow openings on the frame meets the need in the art for a racquet of increased swing speed.

While there have been shown and described what are at present considered the preferred embodiments of the present invention, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims.