10020results about "Racket sports" patented technology

A terminal is provided for monitoring at least one activity of a user. The terminal includes a connecting means, at least one acceleration sensor and a controller. The connecting means, which can include a strap, belt, clip, lanyard or the like, is adapted for attaching the terminal onto a body of the user. The acceleration sensor(s) are capable of measuring and providing acceleration measurement signals representative of movement of the user in performing an activity. And the controller is capable of operating an activity detection application, which is capable of receiving at least a portion of the measurement signals. The activity detection application is also capable of determining at least one value related to the user performing the selected activity based upon the acceleration measurement signals, the at least one value being an intensity value representing an intensity with which the user performs the activity.

A weight for use with a golf club head is provided. The golf club head defines a recess for receiving removable weights, and a threaded opening in a wall of each recess. The weight comprises titanium and has a total mass between about 1 gram and about 2 grams. In addition, the weight comprises a head and a threaded body. The head defines a socket for receiving an engagement end of a tool, and is configured to substantially conform to a recess of the club head. The threaded body, extends from the head and is configured to cooperatively engage the threaded opening of the club head. The threaded body also has an annular ledge, located in an intermediate region of the threaded body, which has a diameter greater than that of a threaded portion of the body.

A golf club (40) having a club head (42) with a face component (60) and an aft-body (61) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61) is composed of a crown portion (62), a sole portion (64) and optionally a ribbon section (90). The face component (60) is composed of a metal material, and the aft-body (61) is composed of a non-metal material such as a composite material or a thermoplastic material. The striking plate portion (72) preferably has an aspect ratio less than 1.7. The striking plate portion (72) preferably has concentric regions of thickness with the thickness portion in the center (102). The club head (42) has a volume in the range of 300 cubic centimeters to 600 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate portion (72) surface area in the range of 4.00 square inches to 7.50 square inches. The golf club head (42) has a coefficient of restitution greater than 0.81 under test such as the USGA test conditions specified pursuant to Rule 4-1e, Appendix II, of the Rules of Golf for 1998-1999.

A golf club head includes a body including at least one compartment, at least one positioning member removably mounted in the at least one compartment, at least one weight member mounted in at least one the positioning member, and at least one retaining member for retaining the at least one weight member in the at least one positioning member. The weight member is concealed in the compartment of the body to provide a good appearance while simplifying polishing procedure and allowing easy replacement of the weight member.

A golf club head (42) having a standard deviation of coefficient of restitution of less than 0.226 is disclosed herein. The golf club head (42) also preferably has a delta of the coefficient of restitution between a geometric face center of the face (72) and a location (806) 0.5 inch sole-ward from the face center that is less than 0.065. The golf club head (42) preferably has a volume ranging from 420 cubic centimeters to 470 cubic centimeters. The golf club head (42) preferably has a moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

A system and method for analyzing and improving the performance of an athletic motion such as a golf swing requires: instrumenting a user with inertial sensors and video cameras and monitoring a golf swing or such other athletic motion of interest; drawing upon and contributing to a vast library of performance data for analysis of the test results; the analysis including scoring pre-defined parameters relating to component parts of the motion and combining the parameter scores to yield a single, kinetic index score for the motion; providing a real-time, information rich, graphic display of the results in multiple, synchronized formats including video, color coded and stepped frame animations from motion data, and data / time graphs; and based on the results prescribing a user-specific training regime with exercises selected from a library of standardized exercises using standardized tools and training aids.

A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).

A golf club (40) having a club head (42) with a face component (60) and an interchangeable aft body (61) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61), which is attached to the return portion (74) of the face component (60), is selected from a plurality of aft-bodies, each having a different center of gravity location. Each of the aft-bodies (61) is composed of a crown portion (62), a sole portion (64), and at least one weight member (122) for adjusting location of the center of gravity. An aft-body (61) is selected from the plurality of aft-bodies (61) based on its center of gravity location, so as to provide the club head (40) with a center of gravity location suited to a particular golfer.

A golf club head (42) having a substantially square or rectangular body is disclosed herein. The golf club head (42) preferably has a volume ranging from 420 cubic centimeters to 470 cubic centimeters. The golf club head (42) preferably has a moment of inertia about the Izz axis through the center of gravity of the golf club head greater than 4000 grams-centimeters squared, and a moment of inertia about the Ixx axis through the center of gravity of the golf club head greater than 3000 grams-centimeters squared.

A golf club head includes a body having at least one recessed portion for securely receiving at least one weight member. The weight member includes a lid with a plurality of protrusions respectively received in receiving portions of the recessed portion. At least one of the protrusions has a weight different from those of other protrusions. The lid has a symmetric shape the same as that of the recessed portion of the body, allowing the lid to be mounted in the recessed portion in one of at least two orientations that correspond to at least two different locations of a center of gravity of the golf club head, thereby allowing rapid change in the center of the gravity of the golf club head.

The present invention relates to a golf club head with external weights that allows for weight modification after the manufacturing process. The golf club head comprises a face component and an aft-body. A plurality of recessed cavities are located on the aft-body. A weight component is disposed within the recessed cavities. A timesert is located at the bottom center of each of the recessed cavities. The timesert is comolded to the aft-body. The weight component is fastened to the timesert by use of a bolt. The recessed cavities are preferably circular in shape.

A golf club head (20) with an adjustable weight member (50) is disclosed herein. The weight member (50) is preferably positioned within a recess (40) of the golf club head (20). The weight member (50) is moved to a desired location and locked in place using a locking mechanism. The weight member (50) is preferably composed of a material having a greater density than the density of the material of a body (22) of the golf club head (20).

The present invention is directed to an iron-type golf club head with one or more passages travelling through a portion of the body. The passages may be accessible in the toe, heel, rear, or sole, or any combination thereof. The passages may be substantially vertical, substantially horizontal or a combination thereof. Weight inserts may be placed in one or more of the passages. In addition, one or more weight inserts may be coupled to the rear of the club head. The weight inserts may have varying densities. The present invention may also include a removable face insert. A plurality of weight inserts may be attached to the rear surface of the face insert.

An iron-type golf club head is disclosed having a heel portion, a sole portion, a toe portion, a top-line portion, a front portion, a rear portion, and a striking face. A back wall is also disclosed in the rear portion enclosing a portion of the rear portion to create an enclosed cavity. The cavity is defined by at least a rear surface of the striking face, an inner back wall surface, and the sole portion. A plug and a filler material is located within the enclosed cavity. The filler material surrounds the plug and is configured to hold the plug in place. The plug is lighter than the filler material.

Systems and methods for sensing and monitoring various athletic performance metrics, e.g., during the course of a game, a practice, a training session, training drills, and the like, are described. These systems and methods can provide useful metrics for players and coaches relating to athletic performances in various sports, including various team sports.

A golf club (40) having a club head (42) with a face component (60) and an aft body (61) is disclosed herein. The face component (60) has a striking plate insert (72) within an opening (45) of a return portion (74). The aft-body (61) is composed of a crown portion (62), a sole portion (64) and optionally a ribbon section (90). The return portion (74) is preferably composed of a cast metal material, the striking plate insert (72) is preferably composed of a formed or forged metal material, and the aft-body (61) is preferably composed of a non-metal material such as a composite material or a thermoplastic material. The golf club head (42) preferably has a volume in the range of 250 cubic centimeters to 600 cubic centimeters and a weight in the range of 165 grams to 300 grams.

A temporary shaft-component connection for assembling a selected golf club shaft with a club head and / or hand grip segment, to facilitate custom club design and fitting to suit the needs and preferences of an individual golfer. The temporary shaft-component connection is particularly designed for use with nonmetallic club shafts formed from a graphite-based composite material or the like having a range of different lengths and stiffness (whip) characteristics. The temporary connection includes an adapter insert for slide-fit reception into an adapter socket, wherein the adapter insert and socket include interengaging flat surfaces such as splines to prevent relative rotation therebetween. The adapter insert is mechanically seated and secured relative to the adapter socket at a pair of axially spaced locations, with a resilient compressible anchor member disposed at one of these securement points for substantially eliminating undesired intercomponent movement.

A hollow golf club head with a concave portion is disclosed and claimed. The club head includes a metallic portion and a light weight portion, which may be formed of plastic, composite, or the like. The concave portion allows the club designer to make a club head having very thin portions while still maintaining the requisite structural integrity. Convex bulges may optionally be provided to house weight inserts to enhance the playing characteristics of the golf club.

A golf club (40) having a club head (42) with a face component (60) and an aft body (61) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61) is composed of a crown portion (62), a sole portion (64) and optionally a ribbon section (90). The face component (60) is composed of a metal material, and the aft-body (61) is composed of a non-metal material such as a composite material or a thermoplastic material. The striking plate portion (72) preferably has an aspect ratio less than 1.7. The striking plate portion (72) preferably has concentric regions of thickness with the thickness portion in the center (102). The club head (42) has a volume in the range of 290 cubic centimeters to 600 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate portion (72) surface area in the range of 4.00 square inches to 7.50 square inches. The golf club head (42) has a coefficient of restitution greater than 0.81 under test conditions such as the USGA test conditions specified pursuant to Rule 4-1e, Appendix II, of the Rules of Golf for 1998-1999.

A golf club head has a body having a top, a sole, a toe end, a heel end, and a forward wall. The forward wall defines a front opening about which a face support is disposed. The face support receives a face plate, thereby enclosing the front opening of the body. The face support includes portions proximate to the top, the toe end, and the heel end, each portion having a peripheral member extending rearward from the forward wall and a rear member extending inward from the peripheral member, with respect to the front opening. The face support can be combined with a preferred face construction and weight elements to optimize club head performance to help a golfer achieve greater distance and control.

A golf club (40) having a club head (42) with a face component (60) and an aft-body (61) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61) is composed of a crown portion (62), a sole portion (64) and optionally a ribbon section (90). The face component (60) is composed of a metal material, and the aft-body (61) is composed of a metal material selected from the group consisting of magnesium alloys, aluminum alloys, magnesium and aluminum. The striking plate portion (72) preferably has an aspect ratio less than 1.7. The striking plate portion (72) preferably has concentric regions of thickness with the thickness portion in the center (102). The club head (42) has a volume in the range of 290 cubic centimeters to 600 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate portion (72) surface area in the range of 4.00 square inches to 7.50 square inches.