Vibration dampening racket

Claim 2

A racket for playing tennis or similar ball games comprising (a) a frame which has an annular ball hitting part and a bar type stem part having two ends, one end attached to said ball hitting part and the other end having a grip part thereon, (b) a net which is extended across said ball hitting part, (c) a hole which is provided on a straight bar part between said grip part and said ball hitting part of the stem part of said frame and which is open at least at its one end, (d) at least one cover which is attached to the opening of said hole, and (e) a vibration absorbing member which is accommodated in said hole, wherein said vibration absorbing member comprises at least one buffer layer of a gel material which is fixed to be deformable in said hole, and at least one mass member for weighing said racket which is supported by said buffer layer so that said mass member does not come in contact with the internal surfaces of said hole and cover.

Claim 3

A racket in accordance with claim 1, wherein said buffer layer is made of a silicone gel material.

Claim 4

A racket in accordance with claim 2, wherein said silicone gel material is a silicone gel having a penetration value of approximately 50 to 200.

Claim 5

A racket in accordance with claim 2, wherein said silicone gel material is made up by mixing 1 to 4 weight percent of fine hollow particles in a silicone gel having a penetration value of approximately 50 to 200.

Claim 6

A racket in accordance with claim 1, wherein said vibration absorbing member comprises a round columnar mass member stored in a cylindrical buffer layer.

Claim 7

A racket in accordance with claim 5, wherein an engaging projection is provided on said mass member and engaged with an engaging recess provided on the internal surface of said buffer layer.

Claim 8

A racket in accordance with claim 1, wherein said mass member is supported by a pair of wall type buffer layers respectively coupled to both ends of the mass member.

Claim 9

A racket in accordance with claim 1, wherein said mass member has a through hole provided in its axial direction and said buffer layer passes through said through hole.

Claim 10

A racket in accordance with claim 1, wherein said vibration absorbing member has a plurality of mass members and a plurality of buffer layers, said mass members and said buffer layers are alternately stacked and an external surface of said vibration absorbing member is formed by the buffer layer.

Claim 11

A racket in accordance with claim 1, wherein said cover attached to said hole is a lens.

Claim 12

A racket in accordance with claim 10, wherein said cover is made with a concave lens and at least one end face of said vibration absorbing member opposed to the internal side of said convex lens is given an artistic design of appearance.

Claim 13

A racket for playing tennis or similar ball games comprising (a) a frame which has an annular ball hitting part and a bar type stem part having two ends, one end attached to said ball hitting part and the other end having with a grip part thereon, (b) a net which is extended across said ball hitting part, (c) a hole which is provided on a straight bar part between said grip part and said, ball hitting part of the stem part of said frame and which is open at least at one end, (d) an outer casing which is inserted and fixed in said hole, and (e) a vibration absorbing member which is accommodated in said outer casing, wherein said vibration absorbing member comprises at least one buffer layer of a gel material which is accommodated and fixed to be deformable in said outer casing and at least one mass member for weighing said racket which is supported by said buffer layer so that said mass member does not come in contact with the internal surface of said outer casing.

Claim 14

A racket for playing tennis or similar ball games comprising (a) a frame which has an annular ball hitting part and a bar type stem part having two ends, one end attached to said ball hitting part and the other end having with a grip part thereon, (b) a net which is extended across said ball hitting part, (c) a hole which is provided on a straight bar part between said grip part and said, ball hitting part of the stem part of said frame and which is open at least at one end, (d) an outer casing which is inserted and fixed in said hole, and (e) a vibration absorbing member which is accommodated in said outer casing, wherein said vibration absorbing member comprises at least one buffer layer of a gel material which is accommodated and fixed to be deformable in said outer casing and at least one mass member for weighing said racket which is supported by said buffer layer so that said mass member does not come in contact with the internal surface of said outer casing.

Claim 15

A racket in accordance with claim 12, wherein said buffer layer is made of a silicone gel material.

Claim 16

A racket in accordance with claim 13, wherein said silicone gel material is a silicone gel having a penetration value of approximately 50 to 200.

Claim 17

A racket in accordance with claim 13, wherein said silicone gel material is made up by mixing 1 to 4 weight percent of fine hollow particles in a silicone gel having a penetration value of approximately 50 to 200.

Claim 18

A racket in accordance with claim 12, wherein said vibration absorbing member comprises a round columnar mass member is stored in a cylindrical buffer layer.

Claim 19

A racket in accordance with claim 16, wherein an engaging projection is provided on said mass member and engaged with an engaging recess provided on the internal surface of the buffer layer.

Claim 20

A racket in accordance with claim 12, wherein said mass member is supported by a pair of wall type buffer layers respectively coupled to both ends of the mass member.

Claim 21

A racket in accordance with claim 12, wherein said mass member has a through hole in its axial direction and said buffer layer passes through this through hole.

Claim 22

A racket in accordance with claim 12, wherein said vibration absorbing member has a plurality of mass members and a plurality of buffer layers which are alternately stacked and the external surface of said vibration absorbing member is formed by the buffer layer.

Claim 23

A racket in accordance with claim 12, wherein said outer casing comprises a barrel part which has an opening at least at its one side and a cover attached to said opening.

Claim 24

A racket in accordance with claim 21, wherein said cover is a lens.

Claim 25

A racket in accordance with claim 22, wherein said cover is made with a convex lens and at least one end face of said vibration absorbing member opposed to the inside of said convex lens is made to provide an artistic design in its appearance.

Claim 26

A racket in accordance with claim 21, wherein the cover of said outer casing is screwed to be freely remountable to the opening end of said hole and the barrel part of the outer casing is fixed by said screw-fitted cover in the hole.

Claim 27

A racket in accordance with claim 24, wherein an 0 ring is provided between said cover and said barrel part.