A swing measuring attachment includes a base portion and a protrusion protruding from the base portion, in which the protrusion is provided with a screw thread, the protrusion including a projection at a front end of the protrusion.

A universal swing training apparatus is provided that includes a sports-related implement and a slide mechanism. The implement includes a proximal section and a distal section that are spaced apart to form a gap there-between. The slide mechanism is inserted within this gap and is connected to the upper end of the proximal section and the lower end of the distal section. The slide mechanism includes a rail guide, a plurality of front ball bearings, a plurality of rear ball bearings, and a sliding rail assembly that are cooperatively configured to insure that this upper end and this lower end are coaxial when the sliding rail assembly is situated in a coaxial position on the rail guide, and permit a lateral shift of this lower end relative to this upper end during a swinging of the implement.

A sports wrist trainer comprising a first elongated swing member with grip attached to a second elongated swing member with head by means of a one way 90 degree hinge, and an elastic return means that returns and holds said swing members at a ninety degree angle one to the other. According to alternative embodiments, the wrist trainer is a bat used for learning batting swings or a golf club used for learning golf swings. The one way hinge rotates to provide a trainer having different swing configurations and to maintain the bat or club head facing the ball at impact just like at address. The elastic return means may be removed and the trainer used without it. A second one way 90 degree rotating hinge can be added to the first providing additional versatility and accommodating both right and left handed golfers.

A golf swing training tool including an arm band (which connects the elbows) and the club shaft are connected by a cord maintain a prescribed grip angle. The arm band is configured to adjust a distance between the elbows. An elastic clip locks onto the club shaft and is configured to encircle the club shaft, and enables easy changing of the grip angle by using an opening lever to change the locking point with a single touch. As a result, frequent changes in grip angle can be made much more easily. Three types of cords are employed, a low-elasticity cord, a high-elasticity cord, and a cord combining both are used to achieve twelve different types of training methods.

Present invention discloses a golf swing practicing apparatus for practicing golf swing in a confined environment with a short-shaft golf club, practicing methods for setting up the short-shaft golf club at a proper incline angle in mid air at address position, and a mechanic model for determining the required club head weight that enables golfer to feel the same Swing Weight as he swings the short-shaft golf club or the conventional golf club.

An iron-type golf club head comprising a topline, a sole in opposed relation to the topline, and a front portion extending from the topline toward the sole. The front portion includes a leading edge, a substantially planar hitting region including a face center, and a peripheral region. The peripheral region at least partially surrounds the hitting region such that the hitting region and the peripheral region define therebetween a visually-recognizable hitting region boundary line including a sole-proximate boundary line segment such that when the club head is oriented in a reference position relative to a virtual ground plane, and in a virtual vertical plane perpendicular to the hitting region and passing through the face center, the sole-proximate boundary line segment is vertically spaced above the leading edge by a distance D1 that is no less than 2.5 mm.

A motion sensor package with an elastomer layer that encases the sensor electronics, including the sensors, a processor, an antenna, and a battery. The elastomer layer may provide shock isolation and water resistance to protect the enclosed electronics. Embodiments may also include an outer housing into which the elastomer encased package is installed. The outer housing may for example comprise two cylindrical sections that screw together to close the outer housing. In one or more embodiments part of the outer housing may be integrated into an item of sports equipment. Embodiments for golf may also include a golf club grip adapter that is inserted into the top of a grip, and which attaches to the outer housing containing the elastomer enclosed sensor package.

The golf swing training device is a device that can be attached to a golf club. It provides an easily seen visual indication of when the clubface is perpendicular to the direction that the clubface is traveling. When used in conjunction with instructional material the golf swing training device can assist a golfer in correcting a bad swing and it can assist a golf instructor in demonstrating proper swing technique.

A swing practice device for emitting light at impact through self-generation enables an impact moment to be checked with the naked eyes without needing a battery by emitting light at an impact time point through self-generation during swinging by using a golf club, a baseball bat, and the like. The swing practice device includes a power generation magnet provided to a shaft so as to slide in the longitudinal direction of the shaft during swinging; a power generation coil provided on the circumference of a section in which the power generation magnet moves; a light-emitting lamp connected to the power generation coil so as to be turned on by the movement of the power generation magnet; and a magnet control means for preventing the movement of the power generation magnet at a set swing speed or lower.

A grip device is disposed on a handle of a piece of equipment. The grip device includes a lower concave surface contacting the handle and a lower concave surface oriented away from the handle. An adhesive tape is wrapped around the handle and grip device in one embodiment. In another embodiment, an adhesive layer is disposed between the handle and grip device. The lower concave surface includes a first taper at an end of the grip device oriented toward a knob of the handle. The upper convex surface includes a second taper at an end of the grip device oriented away from the knob of the handle. The grip device bends to follow a curvature of the handle.