Racket string and stringed rackets using the same
AssigneeGosen Co., Ltd.
InventorsKatsuo Kanno, Yutaka Takashima
Life of this patent
Estimating the term…
Abstract
A racket string consists of lengthwise sections having different tensile elastic moduli with at least one section of the string having a tensile elastic modulus higher than other sections. A stringed racket includes at least one string constituting the central stringed area of the racket with higher tensile elastic modulus, and a peripheral stringed area with sections of the string having lower tensile elastic modulus. Another stringed racket includes at least one string constituting the central stringed area of the racket with lower tensile elastic modulus and a peripheral stringed area with sections of the string having higher tensile elastic modulus.
Claims10
A racket string comprising lengthwise sections having different tensile elastic moduli, wherein at least one section of the string has a tensile elastic modulus at least 5% higher than other sections of said string.
A stringed racket comprising at least one string, said string comprising lengthwise sections with at least one of said lengthwise sections having a tensile elastic modulus higher than other sections, wherein the at least one section having a tensile elastic modulus higher than the other sections constitutes a central stringed area of said racket, and wherein the other sections having a tensile elastic modulus lower than the at least one section constitute a peripheral stringed area of said stringed racket.
A stringed racket comprising at least one string, said string comprising lengthwise sections with at least one of said lengthwise sections having a tensile elastic modulus lower than other sections, wherein the at least one section having a tensile elastic modulus lower than the other sections constitutes a central stringed area of said stringed racket, and wherein the other sections having a tensile elastic modulus higher than the at least one section constitute a peripheral stringed area of said stringed racket.
Dependencies are inferred from the claim text.