A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

Systems and methods described herein may provide an adjustable magnetic attachment force for flag football and for determining a location in flag football. In some embodiments, a system comprises a flag and a wearable item, wherein the flag and the wearable item are configured such that a magnetic attachment force exerted between a first connector and a second connector attaches the flag to the wearable item. In some embodiments, a set comprises one or more flags and one or more wearable items, wherein an adjustable magnetic attachment force attaching the flags and wearable items is adjusted by replacing one or more magnetic components. In some embodiments, a system comprising a flag and a wearable item is configured to detect that contact between a first connector and a second connector has been broken and to automatically indicate a location associated with the contact being broken.

A barbell grip for a barbell shaft is disclosed. The grip is removably attachable to the barbell shaft. The grip includes a cantilever grip arm and a brace arm which is normal or oblique to the cantilever grip. A pair of grips may be used when exercising with the barbell, for example, with a modified bench press.

This disclosure relates to exercise weight plates that contain custom images such as color, lettering and/or logos, and more particularly to exercise weight plates having a removable ring that contains a custom image. The exercise weight plate may include a weight body having one or more recessed areas and one or more rings, each of which fits in one of the recessed areas. Each of the rings may be secured to the weight body so that it remains affixed during use.

A golf club fitting apparatus and a method for fitting using the apparatus are provided. The golf club fitting apparatus may be attached to a golf club and provide fitting information including effective lie angle and effective loft angle. The golf club fitting apparatus includes a lower surface that contacts a butt end of a grip, an upper surface opposite the lower surface, and a side surface connecting the upper and lower surfaces. An angle indicator is disposed at a predetermined angle relative to a shaft axis of the golf club so as to rest in a neutral position when the golf club is in a normal address position.

A practice alignment tool to align a golf ball and putter during practice. The alignment tool is useful for creating a repeatable/consistent aligned squared swing with all golf clubs. A preferred embodiment of the alignment tool has a substantially “L” shaped profile as well as strategically placed tee holes, notches, and markings that allow a golfer to align a golf shot to better hit a target during practice.

A golf club head includes a body having a recessed channel formed in the outer surface. A weight assembly that includes a weight disposed within the recessed channel and a cover extending over the recessed channel. A shelf is defined in the cover and slidably receives the weight. The weight assembly also includes a fastener coupling the cover to the body. The fastener is adapted to retain the weight in the recessed channel only indirectly by the cover. The cover is positionable in an unlocked configuration whereby the cover is raised at least partially out of the recessed channel and the weight is slidable within the shelf and the recessed channel, and a locked configuration whereby the cover is disposed within the recessed channel and the weight is secured within the recessed channel and the shelf. The weight moves with the cover between the unlocked configuration and the locked configuration.

A golf club head includes a body having an outer surface with a recessed channel formed therein. A weight assembly that includes a weight at least partially disposed within the recessed channel, a cover extending over the recessed channel, and a fastener coupling the cover to the body. The fastener is adapted to retain the weight in the recessed channel only indirectly by the cover. The weight assembly is selectively positionable between at least three configurations: a first configuration where the weight is secured within the recessed channel; a second configuration where the weight is slidable within the recessed channel; and a third configuration where the weight is completely removable from the golf club head. The cover is coupled to the body in all three configurations.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.