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Zenith bauxite mill has high output among the other milling machines. Several major ore deposits classified as "untreatable" in the past were developed recently thanks to stirred milling technology. The most successful application is stirred milling technology as it meets three major criteria: capacity, efficiency and reliability. It is however an energy intensive process and as conventional equipment is not capable of providing economically sound production, new solutions are being implemented. Different types of stirred mills are being used in various applications and demand for stirred mills is growing rapidly.Fine grinding of metalliferous ores has become increasingly important for the Australian mining industry, as many of the remaining ore-bodies are very fine-grained and refractory.

With abundant sand sources, India's mining business has wide improvement space. Sand washing machine for sale in India plays a vital role in the mining procedure. Within the mining process, it will need to have crushing equipment, grinding machine along with the beneficiation equipment such as sand washing machine, dryer and so on.

Adopting the rotor analysis, every PFW impact crusher can ensure excellent stableness and reliability. In addition, reformative adjusting device reduces the overhaul time of machine. Typically, tantalum stone crushing machine refers to the crushers used in the tantalum stone crushing process, which can have a great impact on the effect of tantalum ore concentrate. Impact crusher is often used as secondary crushing machine in the process of tantalum mining.In the tantalum mining process, the crushing stage serves as the basic role. The PFW series impact crusher is also called European style impact crusher, often used in the secondary crushing and fine crushing. PFW series impact crushers are adopted by heavy-duty rotor design, unique hammer locking system, and interchangeable wearing parts. It is very suitable for open-pit crushing in quarries.

golds gym mill creek wa

Based on years’ development, our Raymond barite mill will give you the high efficiency production line with less operation costs.From SBM, the Raymond mill is special designed for the barite ore processing line. In the whole production line, the Raymond mill has two main spare parts: grinding roller and the grinding ring, which are made of 65Mn and Mn13G2.

Tailings are usually not generated in this process step.This process step prepares the ore for further size reduction (grinding) or for feeding directly to the classification and/or concentration separation stages.

DE3061156D1(en)*1979-08-241982-12-30Dunlop LtdMethod of making games racket frameNL190305C(en)*1979-08-301994-01-17Int Chem Eng EtsDevice for curvating a hose from stretched plastic material. For less efficient rackets, it is also possible to use a mixture of carbon fibers and or glass fibers, in a proportion of more than 15% by weight.2, a first form of profile;- Fig.12, a diagram showing the coextrusion of the compound and the wicks of fiber;- Fig.In the usual technique, the components of the compound are intimately mixed in an extruder which delivers granules.Another manufacturing process is shown in Fig. The profile is introduced into a bender made up of two branches 23 and 24, substantially in the extension of one another but articulated one on the other around an axis 25 located near a conformation core 22 which reproduces the internal outline of the frame.Sporting equipment constructed with composite materials having composite rods interspersed with bias pliesUS5922255A(en)*1997-04-041999-07-13Highlander Sports, LlcMethod of manufacturing a racket frame and throatGB2344292B(en)*1998-12-032003-01-22Dunlop Slazenger Group LtdHybrid composite racket frameUS7297080B2(en)*2001-05-042007-11-20Wilson Sporting Goods Co. Thus, the two branches 5 and 6 are very joined together and there is no risk of separation even under the most violent efforts, the torsional strength being maximum.6). Of course, the drills 28 (Fig.6. This allows, although at the cost of a slight increase in the number of holes (70 against 64) to reduce the diameter and, consequently, to increase the overall resistance of the racket.In Fig. 4 to 9 schematically represent the different stages of a method of manufacturing a racket frame according to the invention. It is also possible to coextrude, at the periphery of the frame,bands 18 which decorate and maintain the profile. Of course, the choice of this material results from the characteristics of the material of the compound.Optimized thermoplastic racquetUS10653924B2(en)2018-03-122020-05-19Wilson Sporting Goods Co.The use of thermoplastic products quickly implemented makes it possible to reduce the number of operations necessary for the manufacture of a frame. The same references designate the same elements as in Fig.308 in the name of DUNLOP) which brings the advantage of a hollow structure with central reinforcements and integrated junction between branches but results in an extremely expensive manufacture;- by assembly of injected elements leading to a continuous internal rib (EUA patent N ° 4194 738 in the name of ). EP83401206A1982-06-141983-06-13Tennis racket frame and method of manufacturing itExpiredEP0108652B1(en)Priority Applications (4)Application NumberPriority DateFiling DateTitleFR82102921982-06-14FR8210292AFR2528318A1(en)1982-06-141982-06-14Tennis racquet frames of hollow thermoplastic extrudate - subsequently shaped and filled, pref.In GB-A-1 362 116, the core of the frame consists of a thermoplastic foam and on this core is wound a reinforcing tape.9 for the entire frame, to introduce into the compound hollow glass microbeads such as those which are known by the name of "filite" (Trademark).Fig.1). 11, the wicks 28 of carbon fibers or any other material having similar characteristics and capable of being impregnated are unwound from a coil 33 and pass into a bath 29 containing a solution of a resin polyamide or more generally of a thermoplastic material, such as polyurethane. 2. A method according to any preceding claim, characterized in that coextruded retaining strips (18) are disposed around the periphery of the frame, parallel to the plane of the cording.9. The profile is then cut by a saw 20 into frame lengths.Game racquet with separate head and handle portions for reducing vibrationUS6684554B2(en)*2001-09-272004-02-03Kuo-Pin YuHand net frameUS20030213189A1(en)*2002-05-162003-11-20Goldman Arthur S. The two branches are thus joined by gluing which avoids vibrations and increases torsional rigidity.Preferably, the section of the frame being substantially rectangular, a wick of carbon fibers is placed in each of the angles of the rectangle.The already old principle of a frame made from a metal profile is only reliable with hardened steel with a brazed junction between branches, but it does not avoid the need for absolute centering of the bale and the vibrations which are detrimental to the player. It is also possible, in order to obtain a density of the order of 0. Ing. 8.10, a variant of the manufacturing process;- Fig. It has in fact been observed that this part of the frame does not intervene in any way in the bending and torsional forces of the racket after stringing and the total weight can thus be lightened by a few grams. The upper spacer 2 will be called the heart of the racket by the after.l.In Fig.Optimized thermoplastic racquetUS9192822B2(en)2012-11-272015-11-24Wilson Sporting Goods Co.According to the present invention, the method of manufacturing a tennis racket frame or other games, which frame consists of a profiled element which from the middle of its total length is symmetrically arched to form the head of the frame and whose ends are joined at their connection point by at least one overmolded spacer and extend parallel to each other to form the frame of the handle, a handle being overmolded on the parallel ends by injection on the profile after bending of the latter is characterized in that said profile is a profile made of extruded thermoplastic resin then hot bent. These two cavities are subsequently filled with a polyurethane foam, the density of which is chosen as a function of the final weight of the racket.As indicated above, the invention aims to keep the length of the carbon fibers as long as possible. This groove guides the profile as it leaves the extruder. A method according to any preceding claim, characterized in that rating material is inserted in the longitudinal compartment (12).10.7. Thus, the continuity of the locks is not affected when drilling the holes necessary for the passage of the strings.All of these patents relate to rackets, the frame of which is in some casesplastic material whose frame is first shaped, then polymerized by heating to take its final shape. Finally, the frame has, on the inside, a cutaway 17.For rackets with medium sieves, the total weight after stringing can vary from ten grams to ten grams from 365 to 395 grams, the weight of the profile alone being approximately 270 grams.Publications (2)Publication NumberPublication DateEP0108652A1EP0108652A1(en)1984-05-16 EP0108652B1true EP0108652B1(en)1987-09-23FamilyID=26222949Family Applications (1)Application NumberTitlePriority DateFiling DateEP83401206AExpiredEP0108652B1(en)1982-06-141983-06-13Tennis racket frame and method of manufacturing itCountry Status (6)CountryLinkUS(1)US4643857A(en)EP(1)EP0108652B1(en)AU(1)AU1575283A(en)DE(1)DE3373783D1(en)ES(1)ES523252A0(en)IN(1)IN159325B(en)Cited By (1)* Cited by examiner, † Cited by third partyPublication numberPriority datePublication dateAssigneeTitleDE4031180A1(en)*1990-10-031992-04-09Matthias S BotheRackets, especially tennis, squash, badminton or racketball racketsFamilies Citing this family (21)* Cited by examiner, † Cited by third partyPublication numberPriority datePublication dateAssigneeTitleJPH0687903B2(en)*1989-12-051994-11-09住友ゴム工業株式会社Tennis racket frameUS5176868A(en)*1991-01-241993-01-05Prince Manufacturing, Inc. Of course, the groove 26 can be heated and lubricated.The design of frozen tennis rackets, for fifty years, has evolved very rapidly over the past ten years. The carbon fibers can thus retain a greater length. It is these granules which are again extruded to give a profile.In FR-A-2 352 562 a racket is described having a frame made of fiber-reinforced plastic comprising a groove intended for damping vibrations.5) and the polyurethane foam is introduced into the grooves 12 where it expands, by a press 21 (Fig. As mentioned above, the preferred choice of polyamides 11 or 12 or 6-12 results from the criterion of low water absorption.AU625048B3(en)*1992-01-131992-04-29Shen-Ching WangRacquetEP0556495B1(en)*1992-02-211996-09-11Tsai Chen SoongThrough-hole frame sports racketUS5498381A(en)*1994-12-211996-03-12Milsco Manufacturing CompanyMethod of forming and piercing a thermoplastic strip in one stepUS5876641A(en)*1995-07-311999-03-02Andersen CorporationIn-line process for injection of foam material into a composite profileCA2216508A1(en)*1997-02-131998-08-13Lisco, Inc. Continuous fibers, totally impregnated, give better results in traction and flexibility.The next operation is the bending shown diagrammatically in Fig.The expansion of tennis and the evolution in quantity and quality of players poses a problem of material made more sensitive by the transfer of manufacturing to countries with low labor costs and the generalization of new forms of frames authorized by lack of regulation.Figs. The disadvantage of this second process however comes from the need to drill the holes, after cooling, while the frame has taken its final shape. The compounding and extrusion operations are such that the residual length of the fibers is greater than 1 millimeter. Carbon fibers are preferably used for their high modulus of elasticity. As a result, these, without prior impregnation, remain dry so that their mechanical action is practically zero.4, an extruder 19, of the conventional type, inside which a polyamide-carbon fiber compound is introduced and melted, pushes through a die a section 1 of the type shown in section in Figs. They possibly make it possible to ensure the calibration of the racket or to constitute a decoration. Preferably, the holes 11 for passage of the strings are seventy in number for a racket with a medium sieve and a single string passes through a hole.1, the frame 1 has the general shape of an oval, symmetrical with respect to its longitudinal axis, but asymmetrical with respect to its transverse axis.Due to the industrialization of wooden rackets, the selection of trunks has become less rigorous, natural drying has been replaced by steam drying and the uncoiling of wood has replaced the assembly of slices sliced in the direction fibers, which results in a decrease in the performance of these rackets. Gluing, machining, drilling, carried out by semi-automatic means do not allow to obtain a quality equal to that obtained by artisanal ways. The spacers 2, 3 and the weld 4 are formed by injection of a polyamide 11, 12 or 6-12, a polyurethane or an acetal resin, similar to that of the frame profile, but which can be a polyamide 6-6. The other thermoplastic materials however have the advantage of having wider softening ranges than those of the polyamides mentioned.Process for producing a shaped bodyDE102007047012A1(en)2007-10-012009-04-02Thermoplast Composite Process for producing a molded plastic bodyUS8740733B2(en)2011-11-112014-06-03Dennis F.1, a racket frame according to the invention;- Fig. After bending the profile, a second plate is brought in front of the extruder and a new extrusion-bending occurs. Given the position of the cut, a hole 11 allows the passage of a rope (not shown). The sections are then drilled flat (Fig.The following operations which consist of successive injections have been shown diagrammatically in FIG.Thermoplastic polymer extrusion bendingUS7491141B1(en)*2004-01-092009-02-17Stx, LlcLacrosse head having a skeletal memberDE102006017771A1(en)*2006-04-152008-03-27Börger, Herbert, Dr.5) are spaced so that, after bending, the holes 10 are regularly distributed at the periphery of the frame. In the present invention, the section of the profile remains constant during the bending operation. 4 to 9, the different stages of the manufacturing process;- Fig. The branches 5 and 6 are also secured, at their lower end, by an attached part executed by over-injection, between the branches, of a polyurethane foam.7, by immersing a section in a thermostatically controlled bath, for example silicone oil, or by any other means.Long fiber reinforced thermoplastic frame especially for a tennis racquetGB2258158A(en)*1991-08-021993-02-03Kuni TsengSeamless racket.It has already been proposed to manufacture a tennis racket frame from a tube as a profiled element. The polyamides loaded with carbon fibers, forming a "compound", are used:- by simple injection, but the density of the compound requires reducing the cross-sections of the frame, hence a reduction in the moment of inertia;- by injection of a compound lightened by a blowing agent (EUA patent N ° 3. Metal or laminate reinforcements perpendicular to the stringing plane are illusory because of the drilling and their positioning, which is too often central.The present invention relates to a tennis racket frame or similar game and its manufacturing process.297.In FIG.According to another characteristic of the invention, the aforementioned profile has longitudinal compartments which are filled, after extrusion, by a more or less dense polyurethane foam which makes it possible to obtain the desired weight for the frame and protects the profile against being crushed during bending.Although in the foregoing description, the use of carbon and / or glass fibers has been mentioned, it is of course possible to integrate into the framework either boron fibers or fibers of an aromatic polyamide such as KEVLAR (registered trademark), in the form of filaments or continuous fibers. The injection of this polyamide therefore causes a fusion or a surface softening of the branches 5 and 6 which is very favorable for good attachment. A method according to any preceding claim, characterized in that at least one continuous fiber strand (32) is included in one of the angles of the section of the racquet.The profile is preferably formed by the extrusion of a thermoplastic compound such as polyamide 11, 12 or 6, 12, with low water absorption, polyurethane, an acetal resin, in which carbon fibers are incorporated, the length is greater than 1 mm and advantageously of the order of 5 to 6 mm, of the high resistance type. A bar made up of an expanded resin core and an envelope made up of a plurality of complex layers of fibers pre-impregnated with thermosetting resin is bent and then cured under pressure.13, there is a section of a frame obtained after bending similar to that of Fig.The compound is introduced in the form of granules into the extruder 19 where it is melted and directed onto a die 34. The choice of quality and the addition of cut fibers makes it possible to obtain an anisotropic material of high elasticity modulus, endowed with excellent return characteristics.In Fig.Fig.The injection supposes a limit on the rate of carbon mixed in the compound which does not allow to exploit all the characteristics of the material. Snowshoes with properly oriented fibers are reserved for the elite. In certain cases, it is not always possible to control on the one hand the length of the carbon fibers after extrusion and on the other hand the distribution of these fibers within the volume of the frame of the racket. The compound produced cannot impregnate the wicks of carbon fibers in a satisfactory manner. A method according to any one of claims 1 to 3, characterized in that the frame includes coextruded strips (15, 16) perpendicular to the plane of the cording. They improve the flexural strength of the frames but pose problems of bonding.5. provided, however, that their stress strengths are sufficient, as well as the carbon and / or glass fibers. The possible improvement of the coatings cannot eliminate the problems of shearing.8. To this end, a mold having a groove 26 of cross section equal to that of the frame is disposed at the outlet of the extruder die 19. By cons, it is highly interesting from the point of view of the mechanical strength of the frame to include in it at least two braids or wicks of carbon fibers which extend over the entire length of the frame. The cutting of impregnated fabrics does not allow the proper orientation of the fibers to be obtained and results in prohibitive material losses. A method according to claim 1 or 2, characterized in that the said elongete member has at least one longitudinal hollow compartment (12). It will be noted that with the aid of a square head, it is possible to arrange the locks geometrically in a suitable manner, whereas in the processes using molding, the problem cannot be resolved. These operations are carried out while the profile 1 has cooled and is therefore solid. According to a characteristic of the invention, the profile is preferably directly extruded, that is to say that polyamide or any other suitable thermoplastic material such as certain qualities of polyurethanes, polycarbonates or polyacetals, is introduced into the extruder. In order to carry out the hot bending, it is necessary to bring the compound to its softening temperature. Note that when the frame is made of polyamide, it is not necessary to provide special protection for the strings.EP0039377B1(en)*1980-05-071984-07-25Peter Robert MitchellThermoforming tubular articlesAT12022T(en)*1980-05-201985-03-15Cedric Nicholas ReidBat.Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axisFamily Cites Families (20)* Cited by examiner, † Cited by third partyPublication numberPriority datePublication dateAssigneeTitleFR1473356A(en)*1966-02-211967-03-17Tennis racketUS3732345A(en)*1970-04-161973-05-08Dow Chemical CoMethod for the incorporation of filamentary material in a resinous matrixFR2102585A5(en)*1970-08-111972-04-07Martel ReneUS3719737A(en)*1970-12-091973-03-06Bard Inc C RMethod of making a preformed curved epidural catheterFR2126488A5(en)*1971-02-081972-10-06CarpanoPonsTennis racquet frame - of stiff lightweight resin lined metal tubingGB1362116A(en)*1971-04-271974-07-30Callenelle UsinesSports racketsDE2153172A1(en)*1971-10-261973-05-03Engelbert KlaisA method and apparatus for producing a tennisschlaegerrahmensUS3917267A(en)*1973-03-231975-11-04Charles A McgrathTennis racketUS3981504A(en)*1974-03-181976-09-21Ppg Industries, Inc. While the extruded material is still in the pasty state, two impregnated braids 32, or more, are introduced, at the same time as the extruded profile, in a second heating die 36. This foam also prevents the profile from being crushed during bending.11, a diagram of the impregnation of a wick of carbon fibers;- Fig.9. A tennis racquet frame obtained using the manufacturing method of any one of claims 1 to 9.3.Composite racquet structureJPS5221934A(en)*1975-08-121977-02-18Toray Ind IncTennis racket frameJPS5414152B2(en)*1975-09-181979-06-05JPS5340376B2(en)*1976-05-271978-10-26US4297308A(en)*1978-03-071981-10-27Dunlop LimitedMethod of manufacturing games racketsAT2720T(en)*1979-08-241983-03-15Dunlop LimitedRacket frame. The heart is overmolded between the branches 5 and 6 by injection, into a mold 27, of a polyamide resin such as a polyamide 6-6, for example.981.Optimized thermoplastic racquetUS9199135B2(en)2012-11-272015-12-01Wilson Sporting Goods Co.In FR-A-2 102 585 is described a tennis racket frame obtained by bending a metal profile or by molding an epoxy resin. During extrusion, two longitudinal cavities 12 are formed inside the profile.10. As mentioned above, this weight can vary depending on requirements either by introducing hollow glass or aluminum silicate microballoons into the compound, or by acting on the density of the polyurethane foam introduced into the grooves 12, or again by an appropriate choice of the density and dimensions of the strips 15, 16 or 18. This can be obtained, as shown in Fig. During this same operation, the handle 7 is produced by injection of direct skin polyurethane foam. The first injection aims to form the heart of the racket by parallel spacers 2, 3 and 4 (Fig. The connection is completed by the formation of plastic rivets through the holes 10 which are injected during the same operation and which have, on the screws currently used, the advantage of not dissociating from the parts which they join.According to another characteristic of the invention, the material injected to form the spacers extends in a layer 9 on either side of the frame and passes through holes 10 so as to constitute plastic rivets, the injection being carried out at through the holes 10.3 shows another embodiment of the profile which is a section along line III-III of Fig. 2 and 3.2 is a section along line II-II of Fig. These different operations are opposed to the high-speed production of tennis rackets. It implies an application only for middle quality executives. It is based on the idea that it is possible to directly shape the frame at the exit of the extruder, while the profile is still in a pasty state.Sandwich structures coated parallel to the plane of the rope used on a plastic neutral fiber or to reinforce a wooden structure work in shear due to the static or dynamic constraints of the rope.In Fig. It is possible to coextrude with the main profile bars 15 or 16 which are intended to ensure better grip of the profile during extrusion. ReeseRacquet putter apparatusUS9399155B2(en)2012-11-272016-07-26Wilson Sporting Goods Co. A method according to any preceding claim, characterized in that the racquet cross-bar (2, 3) is constituted by a thermoplastic material injected through holes (10) provided through the elongate member so as to form rivets, the mechanical connection between the cross-bar and the elongate member being provided, in addition, by surface melting of the plastic material of the elongate member while the cross-bar is being injected. A method of manufacturing a tennis racquet frame, said frame being constituted by an elongate member which is curved symmetrically from the middle of its total length to form the head (1) of the frame and whose ends are held together where they meet by at least one cross-bar (2, 3) moulded thereover said ends extending parallel to one another in order to form the core of the handle with a grip (7) being moulded over the parallel ends by being injected over the elongate member (1) after it has been curved, the method being characterized in that said elongate member is made of thermoplastic resin which is extruded and then curved while hot. It consists of a folded and curved profile so as to present two branches 5 and 6 joined at their lower part by spacers 2, 3, and by a weld 4. of fibre reinforced polyamide plugged with expanded polyurethane FR83067241983-04-25FR83067241983-04-25Applications Claiming Priority (1)Application NumberPriority DateFiling DateTitleAT83401206T AT29841T(en)1982-06-141983-06-13Tennis racket frame and related production process. By rotation about the axis 25, the branches 23 and 24 are folded around the core 22.4.The carbon fibers of the "high resistance" type are cut to lengths of 5 to 6 mm, and sized to 5% of the basic thermoplastic.Glass-carbon reinforced foamed resin tennis racket frameUS3986716A(en)*1974-09-231976-10-19Arundale Manufacturers, Inc. However, we note at the four corners of the section, four wicks 32 of carbon fibers or the like which extend over the entire length of the frame.13, a section of a frame obtained according to the present invention.2.1 and it shows the structure of a profile 1. Despite these drawbacks which, added to design flaws, cause clearly insufficient rigidity, excellent return characteristics have been obtained with full-section rackets injected from non-light compounds which confirm the validity of the material and make it possible to define a new solution. The assembly is molded and polymerized hot. The injection pressure and the paths through small sections cause the fibers to break such that their residual length does not allow the conservation of the theoretical characteristics. During injection, a thermoplastic sheath in contact with the mold changes the distribution of the fibers and the characteristics of the compound. This polyamide has a higher melting point than polyamide 11 or 12 or 6-12 used to form the profile.504 in the name of PPG Industries) but the loss of modulus in bending does not compensate for the possible increase in sections;- by injection on a fusible core (EUA patent N ° 4.Known solutions using the molding of continuous glass or carbon fibers, impregnated with thermosetting epoxy resins, involve a long manufacturing process, hence a high cost price. A method according to any preceding claim, characterized in that hollow microbaloons made of aluminium silicate are included in the mixture in order to obtain a mixture having a density of about 0. The edges of the holes 11 are chamfered at 13 on the outside and at 14 on the inside of the frame so that the strings do not bear on sharp angles which would damage them. Below the weld 4, there remains a slot 8 which is subsequently filled with polyurethane, the two ends of the arms 5 and 6 being trapped in an injected handle 7. This profile is composed of a compound of polyamide 11, 12 or 6-12 and fibers of carbon. Abstraction has been made of any strips or bars. A method according to claim 1, characterized in that the elongate member (1) is extruded from a mixture of thermoplastic material selected from the class constituted by polyamides, polyurethanes and acetal resins, together with fibers selected fom the class constituted by carbon, glass, boron, and aromatic polyamides.3, another form of profile;- Figs. As has been said previously, the profile is hot bent so to take the desired shape.The extrusion operation, unlike injection, keeps a length and a uniform distribution of the fibers inside the frame, and thereby exploits all their qualities.DK155983C(en)*1981-01-261989-10-16Wirsbo Pex Procedure for designing pipes of form19831983-06-13USUS06/503,906patent/US4643857A/ennot_activeExpired - Fee Related1983-06-13DEDE8383401206Apatent/DE3373783D1/ennot_activeExpired1983-06-13EPEP83401206Apatent/EP0108652B1/ennot_activeExpired1983-06-14ESES523252Apatent/ES523252A0/ennot_activeExpired1983-06-14AUAU15752/83Apatent/AU1575283A/ennot_activeAbandoned1983-06-15ININ755/CAL/83Apatent/IN159325B/enunknownCited By (1)* Cited by examiner, † Cited by third partyPublication numberPriority datePublication dateAssigneeTitleDE4031180A1(en)*1990-10-031992-04-09Matthias S BotheRackets, especially tennis, squash, badminton or racketball racketsAlso Published AsPublication numberPublication dateDE3373783D1(en)1987-10-29EP0108652A1(en)1984-05-16AU1575283A(en)1983-12-22ES523252A0(en)1984-03-16IN159325B(en)1987-05-02ES523252D0(en)ES8402723A1(en)1984-03-16US4643857A(en)1987-02-17Similar DocumentsPublicationPublication DateTitleUS10500447B2(en)2019-12-10Fiber composite and process of manufactureUS2602766A(en)1952-07-08Reinforced plastic rods and methods of making sameEP0063234B1(en)1985-08-21Extruded hollow plastics profile member for window frames, window frame composed of such profile members and manufacturing method of such a window frameUS5551689A(en)1996-09-03String suspension and frame construction for sports racketsUS5407195A(en)1995-04-18Blade construct for a hockey stick or the likeUS5641553A(en)1997-06-24Cellulose surface material adhered to a reinforcement panel for structural wood membersUS6291049B1(en)2001-09-18Sandwich structure and method of making sameUS6761653B1(en)2004-07-13Composite wrap bat with alternative designsUS3972529A(en)1976-08-03Reinforced tubular materials and processCA2190431C(en)2004-03-16Stick handle for an ice hockey stick or for a stick intended for a game of similar typeCN1036126C(en)1997-10-15Long fiber reinforced thermoplastic frame especially for tennis racquetUS3313541A(en)1967-04-11Golf club including reinforced fiber glass shaftUS4065150A(en)1977-12-27Ski and method of making sameUS4874171A(en)1989-10-17Golf club setUS6241633B1(en)2001-06-05Hockey stick shaft and method of making the sameUS4439387A(en)1984-03-27Method of manufacturing a composite reinforcing structureUS6524195B1(en)2003-02-25Tubular bodyUS4358113A(en)1982-11-09Hockey stickFI102813B(en)1999-02-26Game ClubUS7258113B2(en)2007-08-21Thermoplastic composite bow riser, limb, and camUS20130116070A1(en)2013-05-09I-beam construction in a hockey blade coreUS6062996A(en)2000-05-16Formable sports implementUS5599242A(en)1997-02-04Golf club shaft and club including such shaftUS5024866A(en)1991-06-18Composite ski pole and method of making sameUS5083780A(en)1992-01-28Golf club shaft having selective reinforcementLegal EventsDateCodeTitleDescription1984-05-16AKDesignated contracting states:Designated state(s):AT BE CH DE FR GB IT LI LU NL SE. 12, an extruder 19 has been shown diagrammatically including a drive screw 35 forcing the compound in the molten state in a die 34. Compounding is then carried out directly in the extruder, in a single operation.2.In GB-A-1 122 895 is described a racket frame of synthetic material molded on a light core. The material for impregnating the carbon fibers undergoes, as a result of the heating, a slight fusion which allows it to integrate perfectly into the compound.Other characteristics and advantages of the invention will appear during the following description of particular embodiments, given solely by way of nonlimiting examples, with reference to the figures which represent:- Fig.The present invention makes it possible to obtain tennis racket frames whose modulus of elasticity of the material is of the order of 15 GPa. Claims (10) 1. Preferably, the compound + fibers assembly undergoes pultrusion as described in the French patent application FR-A-2 528 318 published on December 16, 1983 which ensures perfect positioning of the wicks 32. At the end of the bath, the solvents are evaporated in an oven 31 and the wicks of impregnated fibers 32 are wound, for example on a take-up reel 30 of sufficient radius so as not to break the fibers. The shape and dimensions of a frame impose the welding of material flow and, at the head of the racket, a local loss of resistance also observed between the holes.

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