[특허]Sports racket having a uniform string structure

Brandt,Richard A.

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Sports racket having a uniform string structure

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A63B-049/02
미국특허분류(USC)	473/543
출원번호	US-0971830 (2001-10-04)
발명자 / 주소	Brandt,Richard A.
출원인 / 주소	Brandt,Richard A.
대리인 / 주소	Schiff Hardin LLP
인용정보	피인용 횟수 : 5 인용 특허 : 14

초록
▼

A sports racket, for tennis and the like sports, has an elongated handle attached to a head having a racket face, which is spanned by a uniform string structure. The head has four sides, forming a non-elliptical shape, in which the opposite sides are substantially parallel. Longitudinal strings, all of which are substantially identical in length and run essentially parallel to each other, and transversal strings, all of which are substantially identical in length and run essentially parallel to each other and perpendicular to the longitudinal axis, span the racket face. The racket has a larger racket face than conventional rackets, while maintaining the length and weight measurements of conventional rackets, resulting in a very large sweet spot and more good hits. The racket has maximally long strings at all points on the racket face and strings substantially identical in length at all points on the racket face resulting in a uniformity of response for off-center hits, an increase in the ball rebound speed, a decrease in angular deflection for off-center hits, and the ability to set the tension of the strings such that they vibrate with the same frequency. The racket has a greater moment of inertia than conventional rackets, resulting in reduced racket rotation and a reduction of injuries to players, such as "tennis elbow".

대표
청구항
▼

What is claimed is: 1. A racket comprising: a frame having a handle defining a longitudinal axis; a head connected to the handle and defining a racket face, wherein the head has parallel first and second transversal sides and parallel first and second longitudinal sides, wherein the first and second transversal sides and the first and second longitudinal sides are firmly connected together at their ends such that each of the sides is substantially inflexible in relation to the other sides; a plurality of transversal strings extending between the first and second longitudinal sides and substantially covering the racket face, wherein the transversal strings are of substantially identical length, wherein the transversal strings run essentially parallel to each other, wherein the transversal strings are generally perpendicular to the longitudinal axis, and wherein at least three of the transversal strings are strung from a first single string; and, a plurality of longitudinal strings extending between the first and second transversal sides and substantially covering the racket face, wherein the longitudinal strings are of substantially identical length, wherein the longitudinal strings run essentially parallel to each other, wherein the longitudinal strings are generally parallel to the longitudinal axis, and wherein at least three of the longitudinal strings are strung from a second single string; wherein the transversal strings and the longitudinal strings are of unequal length, and wherein the tension and/or mass values of the transversal strings and the longitudinal strings are selected so that the vibrational frequencies of the transversal and longitudinal strings are equal. 2. The racket of claim 1 wherein the head and the racket face are rectangular shaped. 3. The racket of claim 1 wherein at least a pair of the first and second transversal sides and the first and second longitudinal sides curve slightly. 4. The racket of claim 3 wherein the curved sides have a curvature such that the string tension of the strings between the curved sides brings the curved sides back to a substantially straight and parallel position. 5. The racket of claim 1 wherein the distances between all intersection points of the string are equal. 6. The racket of claim 1 wherein the space between the transversal strings varies, and wherein the space between the longitudinal strings varies. 7. A racket comprising: a frame having a handle defining a longitudinal axis; a head connected to the handle and defining a racket face, wherein the head has parallel first and second transversal sides and parallel first and second longitudinal sides, and wherein the first and second transversal sides and the first and second longitudinal sides are firmly connected together at their ends such that each of the sides is substantially inflexible in relation to the other sides; a plurality of transversal strings extending between the first and second longitudinal sides and substantially covering the racket face, wherein the transversal strings are of substantially identical length, wherein the transversal strings run essentially parallel to each other, and wherein the transversal strings are generally perpendicular to the longitudinal axis; and, a plurality of longitudinal strings extending between the first and second transversal sides and substantially covering the racket face, wherein the longitudinal strings are of substantially identical length, wherein the longitudinal strings run essentially parallel to each other, wherein the longitudinal strings are generally parallel to the longitudinal axis, and wherein at least three of the longitudinal strings and at least three of the transversal strings are strung from a single string; wherein the transversal strings and the longitudinal strings are of unequal length, and wherein the tension and/or mass values of the transversal strings and the longitudinal strings are selected so that the vibrational frequencies of the transversal and longitudinal strings are equal. 8. The racket of claim 7 wherein the head and the racket face are rectangular shaped. 9. The racket of claim 7 wherein at least a pair of the first and second transversal sides and the first and second longitudinal sides curve slightly. 10. The racket of claim 9 wherein the curved sides have a curvature such that the string tension of the strings between the curved sides brings the curved sides back to a substantially straight and parallel position. 11. The racket of claim 7 wherein the distances between all intersection points of the strings are equal. 12. The racket of claim 7 wherein the space between the transversal strings varies, and wherein the space between the longitudinal strings varies. 13. A racket comprising: a frame having a handle defining a longitudinal axis; a head connected to the handle, wherein the head has parallel first and second transversal sides and parallel first and second longitudinal sides, wherein the first end second transversal sides and the first and second longitudinal sides has holes therethrough and are firmly connected together at their ends such that each of the sides is substantially inflexible in relation to the other sides; a plurality of transversal strings being strung through the holes in the first and second longitudinal sides, wherein the transversal strings are of substantially identical length, wherein the transversal strings run essentially parallel to each other, and wherein the transversal strings are generally perpendicular to the longitudinal axis; and, a plurality of longitudinal strings being strung through the holes in the first and second transversal sides, wherein the longitudinal strings are of substantially identical length, wherein the longitudinal strings run essentially parallel to each other, wherein the longitudinal strings are generally parallel to the longitudinal axis, and wherein the transversal and longitudinal strings are secured to the frame by at least one knot; wherein the transversal strings and the longitudinal strings are of unequal length, and wherein the tension and/or mass values of the transversal strings and the longitudinal strings are selected so that the vibrational frequencies of the transversal and longitudinal strings are equal. 14. The racket of claim 13 wherein the head has a racket face covered by the longitudinal and transversal strings, and wherein the head and the racket face are rectangular shaped. 15. The racket of claim 13 wherein at least a pair of the first and second transversal sides and the first and second longitudinal sides curve slightly. 16. The racket of claim 15 wherein the curved sides have a curvature such that the string tension of the strings between the curved sides brings the curved sides back to a substantially straight and parallel position. 17. The racket of claim 13 wherein the distances between all intersection points of the strings are equal. 18. The racket of claim 13 wherein the space between the transversal strings varies, and wherein the space between the longitudinal strings varies.

이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 (5)

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Sports racket having a uniform string structure

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 (5)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Sports racket having a uniform string structure

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 (5)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼