Abstract: An automatic string weaving system for weaving strings for a stringed sports racquet, comprising a weave assembly that the strings for the stringed sports racquet are weaved through; and an automated string feeder assembly to automatically weave the strings for the stringed sports racquet through the weave assembly.

Abstract: A stringing device for a sports racket includes a base and a cleat. The base has a pair of opposing side ends, an upper surface and a bottom surface. The base further has a guiding groove with an open end and a string engaging surface. The cleat extends downward from the bottom surface of the base and has a guiding channel with an inlet and an outlet. The inner diameter of the guiding channel is larger than the outer diameter of the racket string. The string engaging surface of the guiding groove has a suspending portion corresponding to the inlet of the guiding channel for guiding a racket string entering/exiting from the open end of the guiding groove to thread through the guiding channel from the inlet or outlet thereof without touching the inner wall of the guiding channel.

Abstract: A racquet stringing system for use with a stringing machine configured for stringing a racquet having a string bed of racquet string formed of a plurality of main string segments and a plurality of cross string segments. The stringing system includes a control unit and at least one racquet string algorithm operably coupled to the control unit. The control unit is coupled to the racquet stringing machine and includes a processing unit. The racquet stringing algorithm is configured to enable the control unit to produce at least three different string tension signals for tensioning the main string segments and/or cross string segments of the racquet on the stringing machine based upon one or more racquet head profiles and/or one or more player characteristics.

Abstract: A racquet stringing system for use with a stringing machine configured for stringing a racquet having a string bed of racquet string formed of a plurality of main string segments and a plurality of cross string segments. The stringing system includes a control unit and at least one racquet string algorithm operably coupled to the control unit. The control unit is coupled to the racquet stringing machine and includes a processing unit. The racquet stringing algorithm is configured to enable the control unit to produce at least three different string tension signals for tensioning the main string segments and/or cross string segments of the racquet on the stringing machine based upon one or more racquet head profiles and/or one or more player characteristics.

Abstract: A tension head for a racquet stringing machine in which roller bearings are used between the outer vice plates and the vice jaws. Also, a pin on one vice jaw extends into a slot in an outer vice plate and in the slot is an adjustable screw which allows override of the compression on string upon contact with the pin. Also a follower is mounted on the lead screw and steadied by a guide bar in order to reduce spurious movement of the snatch vice during operation.

Abstract: A clamping assembly for stringing machine includes a slide member, a positioning device, a control device and a rail. The positioning device and a tube are located on two ends of the slide member. The control device includes a pin, a ring-shaped member and a knob. The pin is pivotably connected with the knob. The tube includes an engaging section and a receiving section. The receiving section has a positioning pin and a spring which biases the positioning pin so as to move the positioning pin axially. The knob having a pin hole defined in an underside thereof and can be securely positioned by inserting the insertion member into the pin hole. The knob includes a release button which is connected with a bolt. When pressing the release button, the bolt moves the insertion member which releases the knob.

Abstract: A stringing machine includes a base and an adjustable stringing platform coupled to the base. The stringing platform includes a turntable rotatable about a first axis, and a first releasable resistance assembly coupled to the turntable. The first releasable resistance assembly is selectable between an engaged operating mode in which the releasable resistance assembly resists rotation of the turntable about the first axis, and a disengaged operating mode in which the releasable resistance assembly does not resist rotation of the turntable about the first axis. The releasable resistance assembly includes a magnetorheological fluid for resisting rotation of the turntable about the first axis when in the engaged operating mode.

Abstract: A customized racquet stringing system for a racquet having a plurality of main and cross string segments. The stringing system includes a stringing machine having a base and a stringing platform, and a control unit. The stringing platform is coupled to the base. The stringing platform includes a turntable and a string tensioning assembly. The string tensioning assembly is configured to receive one or more string tension control signals. The control unit is operably coupled to the string tensioning assembly and is configured to execute a string tensioning program and to provide a plurality of the string tension control signals based off of the string tensioning program to the tensioning assembly. The control unit includes a processor and a memory. The tension control signals correspond to at least three separate string tension values applied to the plurality of main string segments and/or the plurality of cross string segments.

Abstract: A stringing device of a racket stringing machine includes a shell whose internal surrounding surface is defined with a track extending along a straight line; a sliding base accommodated in the track of the shell, with wheels on its opposite sides to roll on the surrounding surface of the track; a stringing head fixed on the sliding base by its bottom end; a transmission mechanism connected to the sliding base to drive the sliding base to slide along the track, concurrently driving the stringing head on the sliding base to move along a straight line.

Abstract: An apparatus that lays strings on top of each other within a frame; the overlying of the strings, once the process is finish, will create the arrays of intersections between the vertical and horizontal strings that create the net in a racquet, such as a tennis racquet, or squash racquet. The apparatus is new, very useful and has of a main section, a complementary overlap cover for the main section, a way of securing and undoing the main section to and from the frame of the racquet, and an inlet and outlet passage for the strings to and from the main section. In addition, a preferred embodiment includes the main section with vertical and horizontal routes that overpass each other made of transparent plastic, and consisting of any number of vertical and horizontal routes. A preferred embodiment includes the complementary overlap with a design of any geometric shape.

Abstract: An ergonomically-designed racquet stringing machine. The stringing machine includes an electronic control unit coupled to a platform and/or to a height adjustment assembly. The control unit is capable of generating a control signal to automatically adjust at least one parameter of the machine, such as machine height, angle of stringing platform, or string tension, based upon a selected user profile. A method of controlling tension in a racquet while stringing the racquet entails the use of the stringing machine.

Abstract: A stringing machine includes a base and an adjustable stringing platform coupled to the base. The stringing platform includes a turntable rotatable about a first axis, and a first releasable resistance assembly coupled to the turntable. The first releasable resistance assembly is selectable between an engaged operating mode in which the releasable resistance assembly resists rotation of the turntable about the first axis, and a disengaged operating mode in which the releasable resistance assembly does not resist rotation of the turntable about the first axis. The releasable resistance assembly includes a magnetorheological fluid for resisting rotation of the turntable about the first axis when in the engaged operating mode.

Abstract: An ergonomically-designed racquet stringing machine. In certain embodiments, the stringing machine includes a stand extending from a base at an angle between about 70 and about 89 degrees from horizontal. In certain embodiments, the stringing machine includes a releasable resistance assembly configured to provide resistance to rotation of the turntable about an axis.

Abstract: An ergonomically-designed racquet stringing machine. In certain embodiments, the stringing machine includes a stringing platform supporting at least one racquet mount for securing the racquet in a stringing plane at an angle of about 1 to about 15 degrees from a horizontal surface. A control unit may be coupled to the stringing platform and operably coupled to a platform tilt assembly for adjusting the position of the stringing platform and the angle of the stringing plane. Additionally, the stringing machine may include a tool storage tray coupled to the stringing platform, with the tool storage tray having a bottom surface that is in a plane non-parallel with the stringing plane.

Abstract: A racket stringing machine comprises includes a horizontal adjustment device and a brake device. The adjustment device is fixed to a base by a horizontal mounting seat which includes a horizontal rail and a base plate with one end slidably mounted to the rail. Thus, the string pulling device can be horizontally moved to adjust the angle of the string relative to the racket, so as to eliminate the friction between the string and the racket, improving the stringing quality and extending life of the racket frame. The brake device includes a disc and a clamping device disposed on a rotary shaft of the base. The clamping device is connected to hand and foot switches by two brake cables. When the operator leaves or stops the machine for a while during a stringing operation, he can stop the stringing operation conveniently by using the hand or foot switch.

Abstract: A string clamping device includes a base with two first sidewalls and a movable unit is located between the two first sidewalls and a guide member is connected to an end of the movable unit. A pair of clamping members are pivotably connected between two second sidewalls of the movable unit so as to clamp a string which is guided by the guide member. Each of the two first sidewalls has a first slot and a second slot defined in an inside thereof. The first slots are close to the guide member and inclined to a horizontal plane. Two bearings are connected to the two second sidewalls and movably received in the first and second slots. The movable unit together with the clamping members is pivoted along the inclined first slots when pulling the string such that the string needs not to be bent.

Abstract: A string clamping device includes a base with two first sidewalls and a movable unit is located between the two first sidewalls and a guide member is connected to an end of the movable unit. A pair of clamping members are pivotably connected between two second sidewalls of the movable unit so as to clamp a string which is guided by the guide member. Each of the two first sidewalls has a first slot and a second slot defined in an inside thereof. The first slots are close to the guide member and inclined to a horizontal plane. Two bearings are connected to the two second sidewalls and movably received in the first and second slots. The movable unit together with the clamping members is pivoted along the inclined first slots when pulling the string such that the string needs not to be bent.

Abstract: A work table tilting apparatus for a stringing machine for tennis rackets which allows free tilt at any angle toward the front of the user.

Abstract: A height adjusting device for use in a string pulling block of a stringing machine includes a rod member combining with a string pulling block of the stringing machine for moving relative to the rod member. A tilted coupling seat is mounted on the upper side of a base of the stringing machine. The tilted coupling seat includes a rail arranged thereon and with which the rod member is axially connected for moving along the rail. Thus, a string inserted between a frame and a string puller of the string pulling block is in a horizontal state, thus avoiding friction of the frame and the string to protect the string and the frame from harm.

Abstract: A height adjusting device for a string puller of a string pulling block of a stringing machine includes a rod member. The string pulling block is allowed to move relative to the rod member and includes the string puller and a lever disposed thereon. The string pulling block includes an upper support provided therein and having a tilted slidable mount disposed thereon. The string pulling block further includes a lower support mounted on the rod member and having a tilted coupling seat affixed thereon. The coupling seat is obliquely coupled with the lower support and involves an inclined rail arranged thereon for axially moving a sliding member therein. By attaching the coupling seat onto the sliding member, the upper support may obliquely move upward and downward along the rail, thus adjusting the height of the string puller.

Abstract: An ergonomically-designed racquet stringing machine. In certain embodiments, the stringing machine includes a stringing platform supporting at least one racquet mount for securing the racquet in a stringing plane at an angle of about 1 to about 15 degrees from a horizontal surface. A control unit may be coupled to the stringing platform and operably coupled to a platform tilt assembly for adjusting the position of the stringing platform and the angle of the stringing plane. Additionally, the stringing machine may include a tool storage tray coupled to the stringing platform, with the tool storage tray having a bottom surface that is in a plane non-parallel with the stringing plane.

Abstract: An ergonomically-designed racquet stringing machine. In certain embodiments, the stringing machine includes a stand extending from a base at an angle between about 70 and about 89 degrees from horizontal. In certain embodiments, the stringing machine includes a releasable resistance assembly configured to provide resistance to rotation of the turntable about an axis.

Abstract: A height adjusting device for use in string pulling block of string machine comprises a rod member combining with a string pulling block of the stringing machine for moving relative to the rod member, a titled coupling seat mounted on the upper side of a base of the stringing machine, wherein the coupling seat includes a rail arranged thereon, with which the rod member is axially connected for moving along the rail, such that a string inserted between a frame and a string puller of the string pulling block is in a horizontal state, thus avoiding the friction of the frame and the string to protect the string and the frame from harm.

Abstract: A clamping device for stringing machine includes a slide member, a positioning device, a control device and a rail. The positioning device and a tube are located on two ends of the slide member. An extension of a clamping device is inserted into the tube. The control device includes a pin, a ring-shaped member and a knob. The pin is pivotably connected with the knob. A torsion spring is received in an annular space of the knob so as to rotate the knob to its original position. The tube includes an engaging section and a receiving section. The receiving section has a positioning pin and a spring which biases the positioning pin so as to move the positioning pin axially. The knob having a pin hole defined in an underside thereof and can be securely positioned by inserting the insertion member into the pin hole.

Abstract: A string tensioning force controlling apparatus for a racket stringer includes a string pulling mechanism having a support housing, a string pulling head movably supported by the support housing for engaging a string, and a drive arrangement drivingly coupled to the string pulling head. The apparatus also includes an encoder disposed adjacent to the string pulling mechanism for sensing displacement of the string pulling head relative to the support housing and generating a digital output signal representative thereof, and a central processing unit for receiving the digital output signal and in response thereto controlling operation of the drive arrangement to move the string pulling head such that a desired tensioning force is accurately applied to the string so as to produce a tensioned string.

Abstract: A string-pulling device of a racket-stringing apparatus, including a housing, a driving unit, a string-pulling head, a control box and a memory. The driving unit is arranged in the housing. The driving unit includes a collective circuit. The string-pulling head mounted on one side of the housing and rotationally drivable by the driving unit. The control box is detachably mounted on the housing. A main circuit is arranged in the control box for controlling and driving the driving unit. The main circuit is electrically connectable with the collective circuit of the driving unit for controlling and driving the driving unit. A control panel is disposed on the control box. The control panel has several control buttons corresponding to the main circuit for controlling the main circuit.

Abstract: A string pulling head structure of a racket stringer, including a first string chuck and a second string chuck fixed with each other and a first chucking plate and a second chucking plate disposed between the first and second string chucks. Each of the opposite faces of the first and second string chucks and the first and second chucking plates is formed with two parallel slots. An antiwear slat is disposed on one side of each of the slots to serve as the bottom of the slot. The slats are inclined by equal inclination angle but in reverse direction, whereby the depths of two ends of the slots are unequal to each other.

Abstract: A string pulling device for a racket stringer includes a base, a rotation unit, a drive unit, a string pulling unit, and a top cover. Thus, the rack of the drive unit meshes with the gear of the rotation unit, so that the rotation disk is rotated rapidly to reach the destined tension unit, thereby facilitating a user adjusting the values of the pulling stress so as to control the pond and tension required for stretching the strings of a tennis or badminton racket. In addition, the string pulling device provides a precise positioning structure.

Abstract: A racket stringer includes a work table, and two opposite fixing devices each mounted on the work table and each including a rack, a guide plate, two foot posts, a support shaft, and a press rod. Thus, the fixing device has a quick positioning microadjustment function. In addition, the fixing device can be displaced easily and rapidly, thereby facilitating the user operating the racket sag stringer.

Abstract: Disclosed is a tennis racket stringing machine. The machine comprises racket fastening means including a lower supporting plate on which a head frame of a tennis racket is seated to be securely maintained in a lengthwise direction of the lower supporting plate, a fixed section which is projectedly disposed adjacent to one end of the lower supporting plate and functions to fasten one end of the head frame, a movable section which is disposed adjacent to the other end of the lower supporting plate to be capable of being moved along the lengthwise direction and functions to fasten the other end of the head frame, and a clamp which is located below the lower supporting plate to rotatably support the lower supporting plate; and tensioning force adjusting means separately located from the racket fastening means, for adjusting tensioning force of string installed through the head frame.

Abstract: A tool for adjusting string on a racket is disclosed. The tool is made up by a longitudinal body of a size comparable to that of a pen, defined by a hilt with a section that narrows at the ends, one of which is provided with a notch to push the string transversally and a hook to pull it and correct displacements in the set of strings' octagonal configuration. On the opposite side, it is provided with a notch that houses, and protects, a cutting edge to produce the necessary cuts in the string to avoid racket bending. The invention is a multi-function instrument, that may be easily carried by the player, to be used instead of the usual means that include pushing levers and cutting edges or scissors.

Abstract: A string drawing electrical device for a racquet has a casing, a string holder, an actuating device and a control unit. The string holder is rotatably attached to a panel of the casing. The actuating device is mounted in the casing and provides two functions, feeding and reversing, to the string holder. The control unit is mounted in the casing for controlling the actuating device to act. Accordingly, the string drawing electrical device can tighten and loosen the string, and the tensile force of the string of the racquet can be accurately controlled.

Abstract: A string clip positioning device of a racket string stretcher includes a slide seat, a pusher, a positioning member, and a track. The slide seat is mounted the track, and is provided with a seat tube which has a mounting section and a receiving section. The slide seat is formed with a chamber communicating with the receiving section of the seat tube. The positioning member is mounted on the slide seat, and includes a cap, and a clamping block. A support shaft is pivotally mounted in the mounting section of the seat tube. The pusher includes a push shaft pivotally connected with a link which is pivotally connected with the press handle of the string clip. A follower is mounted in the chamber of the slide seat, and includes a bearing wheel, a wheel seat, an adjusting threaded rod, and a drive block.

Abstract: A string tensioning force controlling apparatus for a racket stringer includes a string pulling mechanism having a support housing, a string pulling head movably supported by the support housing for engaging a string, and a drive arrangement drivingly coupled to the string pulling head. The apparatus also includes an encoder disposed adjacent to the string pulling mechanism for sensing displacement of the string pulling head relative to the support housing and generating a digital output signal representative thereof, and a central processing unit for receiving the digital output signal and in response thereto controlling operation of the drive arrangement to move the string pulling head such that a desired tensioning force is accurately applied to the string so as to produce a tensioned string.

Abstract: Disclosed is a tennis racket stringing machine. The machine comprises racket fastening means including a lower supporting plate on which a head frame of a tennis racket is seated to be securely maintained in a lengthwise direction of the lower supporting plate, a fixed section which is projectedly disposed adjacent to one end of the lower supporting plate and functions to fasten one end of the head frame, a movable section which is disposed adjacent to the other end of the lower supporting plate to be capable of being moved along the lengthwise direction and functions to fasten the other end of the head frame, and a clamp which is located below the lower supporting plate to rotatably support the lower supporting plate; and tensioning force adjusting means separately located from the racket fastening means, for adjusting tensioning force of strings installed through the head frame.

Abstract: A gut-clamping mechanism for use in stringing tennis, badminton, squash, and racquetball rackets. The apparatus includes a support post erected on a clamp block, a pair of holders wherein one holder is secured onto the top edge of said support post and the other holder is provided on the first holder in a detachable manner and such that an expanding coil spring is inserted between them. A pressing plate that has a shaft that goes through the pair of holders when the holders are joined together and with a fastening, adjusting nut hinged on the screw unit that is etched and provided at the tip of said shaft. A clamp handle is axially attached to an edge of the pressing plate, wherein a freely rotating roller is axially attached to the part that comes into contact with the side of the holder secured onto the support post in the clamp handle.

Abstract: A racket stringing clamp for clamping diagonal racket strings which clamp has generally configured teeth projecting into spaces which are to be bordered by string segments. The clamp includes jaws for gripping two substantially parallel string segments. A handle including a cam serves to move the jaw.

Abstract: A racket stringing machine consists of a racket cradle assembly, to lock a racket frame in place, and a tension head assembly to grip and apply tension to the string during the stringing or restringing process. During the process an electronically controlled, motor-driven assembly holds the loose end of the string and applies tension as it guides it in its motion away from the racket frame. Electronics compare at each instant the tension on the string to a previously dialed-in one and when both are equal the carriage halts.

Abstract: A string tensioning device for a racquet stringing machine. The device includes a stallable electric motor for providing torque to a tensioning shaft and an electric control circuit for regulating the torque provided by the motor. A manual adjustor is provided to adjust the torque to a preselected desired torque. A gripper is located on the tensioning shaft for gripping the string to be tensioned. In use the motor stalls at a preselected torque permitting the string to be tensioned a predetermined amount.

Abstract: A clamp for stringing rackets having conventional and fan pattern designs is provided. The clamp has a body, a support shaft and a base. The body has two members which cooperate to clamp a string therebetween. The body is pivotably received on the support shaft and may swivel about the shaft in both open and closed positions. The base is slidably received on a glide bar of a racket stringing apparatus and supports the shaft in a perpendicular orientation with respect to the glide bar.

Abstract: A racquet stringing machine includes a base, a racquet mounting frame attached to the base for mounting and securing a racquet to be strung with string, a string clamping device which holds the clamped end of the string in place relative to the racquet frame while tension is being applied to the tensioning end of the string and a string tensioner having a string tensioner frame mounted to the base in offset relation to the racquet mounting frame, a tension setting mechanism movably mounted to the string tensioner frame for applying a desired amount of tension to the strings and a string gripper mounted to the tension setting mechanism for holding the tensioning end of the string while tension is applied.

Abstract: The present invention relates to a device for repairing or replacing a broken string on a racket. The device comprises a first string gripping member for gripping a portion of a broken or replacement string outside the frame of a racket; a second string gripping member for gripping a portion of the broken or replacement string inside the frame of the racket; a connector for connecting the first and second string gripping members; and a reaction member, in the form of a plate, located on the connector between the first and second string gripping members. The reaction member is arranged to bear against the frame of the racket and, together with the first string gripping member, to apply a tension to the string, and together with the second string gripping member, to hold the string under tension so as to allow the string to be connected to the frame of the racket in a tensioned state.

Abstract: A racquet stringing machine which accomplishes tensioning of the strings of a racquet by the use of one or more combination tensioning and holding clamp units which operate directly on the string inside the racquet. The present invention also provides fixed, non-rotating racquet head frame holding fixture holds the racquet stationary throughout the stringing process. The racquet is supported against distortion by compressive mounts disposed along the outer perimeter of the racquet head frame only. The racquet stringing machine further includes an offset pedestal which stabilizes the machine by counterweight effect while keeping the floor beneath the racquet holding fixture free of obstruction.

Abstract: A racket stringing machine consists of a racket cradle assembly, to lock a racket frame in place, and a tension head assembly to grip and apply tension to the string during the stringing or restringing process. During the process an electronically controlled, motor-driven assembly holds the loose end of the string and applies tension as it guides it in its motion away from the racket frame. Electronics compare at each instant the tension on the string to a previously dialed-in one and when both are equal the carriage halts.