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WO/1983/003998A1 |
In the method for manufacturing strings, a plurality of narrow strip layers (22) of synthetic material are successively and coaxially helically wound on the cylindrical surface of a continuous core. The winding (3) thus produced is conve...
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WO/1983/003358A1 |
In a tennis or squash racket, the strings (22, 24) are mounted without friction on the frame (12) and arranged at the surface of the frame in such a way that two parallel strands (22c, 22d) of the same string are distant by at least one ...
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WO/1983/003454A1 |
A mechanical seal for a shaft (10) exiting a housing (12) has an end plate (22) secured to the housing and a sleeve (26) secured to the shaft. The sleeve (26) carries a rotary seal element (40) and the end plate a stationary seal element...
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WO/1981/003431A1 |
Strings are provided for use in racquets for sports such as tennis, squash, badminton, racquetball and the like. The strings have a main section of string (10A, 10B, 10C, 10D, 10E, 10F) with a string retaining means (11A, 11B, 11C, 11D, ...
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WO/1981/001797A1 |
The guts are comprised of braided, twisted or perforated metal wires which, compared to the natural or plastic material guts, are less sensitive to outer effects and exhibit a higher tensile strength and constant flexibility and tension....
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WO/1980/002511A1 |
A paddle racquet (10) having a substantially solid contact surface (12) is provided for indoor and outdoor racquet sports The racquet has a grip (15) for a hand manipulation thereof connected to the substantially solid contact surface (1...
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WO/1980/001757A1 |
The racket is comprised of a frame (10) and strings (11). The strings (11) are comprised of two intercepting networks formed by two nylon threads (12, 13) tensioned between two eyebolts (14, 15) and two tensioning devices (16, 17). These...
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WO/1980/001649A1 |
A racket-stringing machine having a racket head holding fixture and a carriage (6) and string clamp (7) mounted for reciprocation toward and away from the fixture for engaging a string (8) drawn through a racket head mounted on the fixtu...
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JP7429401B2 |
To obtain monofilament with excellent processability, good handling, and elasticity.There is provided a composite monofilament composed of two kinds of thermoplastic resins. Of two kinds of thermoplastic resins, one is an elastomer resin...
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JP2024006294A |
The present invention provides a polyester filament with a small coefficient of friction and excellent abrasion resistance, and a polyester string that has excellent durability and vibration damping properties and provides a soft feel at...
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JP2023155013A |
To provide a fiber having an excellent property.A fiber manufacturing method has a step to obtain a fiber after being processed by twisting a fiber before being processed in a state where tensile force is applied in a lengthwise directio...
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JP7333039B2 |
Provided is a racket string having a string-making structure for side threads, the racket string being capable of being easily manufactured and exerting a plurality of functions with a single string. A string (10) includes a core thread ...
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JP7317095B2 |
A grommet (20) includes a tubular portion (21). The tubular portion extends along a first direction (DR1) and has a distal end (21a) and a proximal end (21b) opposite to the distal end in the first direction. A through hole (21c) that ex...
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JP7280096B2 |
The objective of the present invention is to enable resilience when hitting a ball to be improved while providing satisfactory strength. A racket string (10) extending in a prescribed direction is configured to be provided with a core th...
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JP7280131B2 |
To provide a string clamp mechanism capable of smoothly performing without strong force, a lock release operation of a clamp table fixing lever.An upper end part of a lock pin 9 protruding from a clamp table 2 is fitted to a semicircular...
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JP7262160B2 |
To quickly enable fixation, continuation and release in a desired rotating position of a horizontal direction of a turntable.When multiple electromagnets 13 are energized and excited, the multiple electromagnets 13 slightly come up and p...
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JP2023044828A |
To provide a badminton racket 2 which can suppress variation of a projectile path of a shuttle in a shot a hit point of which is closer to a top.A badminton racket 2 has a shaft 4, a frame 6, and a grip 12. In the racket 2, a ratio (ωo2...
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JP2023041015A |
To provide a monofilament composed of polyamide 11, which is a polyamide-based monofilament made of environmentally friendly resin that has an excellent abrasion resistance and can be suitably used for various daily necessities and indus...
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JP7231300B1 |
Kind Code: A1 The present invention provides a string that can effectively apply a spin, and a racket to which the string is strung is not only easy to apply a spin, but also has a different degree of spin applied to the front and back o...
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JP2023017526A |
To provide a string for rackets having balanced shot feeling at impact and ball flight by controlling an elastic modulus.A string 2 for rackets is composed of thermoplastic synthetic fiber filaments 3 and 4. The filaments 3 and 4 are mel...
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JP7180475B2 |
To provide a racket that can achieve a high trajectory even when a ball is hit at a position deviated from the center of a face.A grommet 8 of a racket includes cylinder parts 100a. The cylinder part 100a includes a through-home 24a for ...
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JP2022161528A |
To provide a racket string that offers a good balance between a hitting feel and durability.A method for producing a racket string 10 includes the steps of: (A) preparing an untreated string with a loss elastic modulus E" at 25°C of les...
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JP2022108959A |
To digitize a comfortableness degree of striking sound in a badminton racket.An evaluation device (10) comprises: an acquisition unit (31) for acquiring sound information related to striking sound of a shuttle by a badminton racket; an a...
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JP7106584B2 |
The present invention relates to a monofilament string for a racket, comprising a core consisting of a single filament and a sheath extending around the core and in contact with the core, the monofilament string being characterized in th...
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JP7051942B2 |
An automatic racket stringing system includes: two lens modules, respectively shooting a racket thread hole on a racket at a first preset position from different two angles, and the lens modules are based on the angles and determine a fi...
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JP2022037387A |
To provide a racket string provided with all of shock absorption, resilience and durability.A polyester resin monofilament contains 5 to 15 mass% of thermoplastic elastomer and 2 to 10 mass% of polyolefin-based resin. In a racket string,...
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JP7006485B2 |
In a tennis racket 2, longitudinal strings 20 extending in a longitudinal direction and transverse strings 22 extending in a transverse direction intersect each other to form a plurality of meshes 26. At a center, in the transverse direc...
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JP2021177820A |
To provide a string 10 for a racket which shows an excellent balance between hitting feeling and durability.A method of manufacturing a string 10 for a racket includes: (A) a process of preparing an untreated string; and (B) a process of...
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JP2021168818A |
To provide a relatively thin racket string having both of good tensile fracture elongation and tensile fracture strength, and a racket having the string.A racket string 1 has: a main thread 10 consisting of a synthetic resin core thread ...
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JP2021133084A |
To provide a racket excellent in a balance in various performance.A face of a racket has a plurality of first vertical threads 30a, a plurality of second vertical threads 30b, and a plurality of horizontal threads. The first vertical thr...
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JP3233952U |
To provide a chip type damper for a racket capable of sufficiently reducing unpleasant sounds and vibrations due to high frequency vibration of a string generated at the time of hitting a ball. Two or more straight lines and curves penet...
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JP6906091B1 |
To provide a racket grommet having high durability and a racket to which the grommet is attached, which is not damaged even when repeatedly pulled up with a high tension. This is a racket grommet 40 for stretching a string on a racket, w...
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JP2021074100A |
To provide a racket gut shift correction tool which excels in portability and handleability with a simple structure and which also has high versatility.The racket gut shift correction tool 10 that corrects shift of polymerization positio...
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JP2021029532A |
To provide a multifilament that is an unconventional, high-strength and low-water-absorbable polyamide multifilament and is particularly suitable for racket strings.A polyamide 610 multifilament for racket strings has the rates of change...
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JP6812052B2 |
Provided is a racket string which improves spin performance. The racket string (10) comprises a filamentous structure (13), and a coating film (16) formed around the filamentous structure, wherein the coating film has a surface frictiona...
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JP6812053B2 |
To provide a string set that ensures improving a hairpin performance and a cut smash performance. A string set (20) is a string set strung on a racket as a main string and a cross string, and is configured to include a first string (22) ...
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JP2020168320A |
To provide a manufacturing method of a badminton racket excellent in control of a shuttle at use while deformation of a frame is suppressed by a stretching method of strings.A manufacturing method of a badminton racket includes: a first ...
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JP6744627B2 |
To obtain a string for gut that facilitates production control, and eliminates any special problem concerning a working environment aspect and a hygiene aspect in the manufacturing process.A string for gut is provided. A core material 11...
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JP6722835B1 |
A core thread 2 containing a synthetic fiber filament, a leather thread 3 containing a synthetic fiber filament covering the core thread 2, a surface coating resin layer 4 on the outside of the leather thread 3, and a surface coating res...
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JP3226594U |
To provide a positioning structure for a frame clamp of a string machine having high positioning reliability. A frame clamp positioning structure includes a rack 10, an engaging block 20, an operating member 30, and two springs 40. The r...
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JP6698317B2 |
The present invention is configured so that an advantage can be obtained by forming a hollow section and durability can be increased. A racquet string (10) is configured provided with a core yarn (11) and a plurality of side yarns (12) w...
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JP2020070536A |
To provide a thermoplastic fiber having excellent abrasion resistance.There is provided a thermoplastic fiber that has excellent abrasion resistance, is composed of a thermoplastic resin, and comprises the following features: the thermop...
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JP6615498B2 |
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JP3220683U |
To provide a catgut tensioning support device having a simple structure and easily catgut tensioning. A racket catgut support device 1 is arranged at a metal head 2 for alternately moving one of the catgut G1 stretched on the racket up a...
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JP6443894B1 |
To provide a catgut tensioning support device for a racket capable of smoothly alternately crossing one catgut stretched earlier without imposing a burden on the catgut stretched earlier. A gut tensioning support device 10 supports to al...
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JP6433025B2 |
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JP2018187163A |
To provide a racket string having a low frictional resistance value and high durability.The racket string includes a core yarn 2, a sheath yarn 4 in the outside thereof, and a surface resin layer 5 in the outside thereof. The core yarn 2...
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JP6397857B2 |
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JP6392598B2 |
To provide a polyamide monofilament having excellent flexural fatigue resistance.There is provided a sheath-core composite polyamide monofilament by compositing polyamide 1010 and a polyamide resin other than the polyamide 1010, a cross ...
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JP6175665B2 |
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