An adjustable height golf tee system having a tee and an anchor is discussed. The tee is height-adjustable relative to the anchor. A first anchor includes a cap, a stem, and a tip. The stem can be threaded internally, externally, or a combination thereof. A second anchor includes a base, a first stem, a cap, and a second stem as well as optional spacers. The stems can be threaded internally. Both the first and second anchors can be composed multiple pieces (e.g., a detachable cap, a detachable stem, or a detachable portion thereof) to provide access to an inner cavity of the respective stems.

A racquet includes a handle; and a frame connected to an end of the handle, the frame defining a rounded interior space, the frame including a negative Poisson's ratio (NPR) foam material, in which the NPR foam material, and in which the frame has a Poisson's ratio of between 0 and −1; and a network of strings stretched across the rounded interior space defined by the frame. A golf tee includes an elongated stem; and a head disposed at an end of the elongated stem and shaped to receive a golf ball; in which at least a portion of the golf tee is formed of a negative Poisson's ratio (NPR) foam material, in which the portion of the golf tee has a Poisson's ratio of between 0 and −1, and in which the NPR foam material includes an NPR metal foam, an NPR ceramic foam, or an NPR-PPR composite foam.

A racquet includes a handle; and a frame connected to an end of the handle, the frame defining a rounded interior space, the frame including a negative Poisson's ratio (NPR) foam material, in which the NPR foam material, and in which the frame has a Poisson's ratio of between 0 and −1; and a network of strings stretched across the rounded interior space defined by the frame. A golf tee includes an elongated stem; and a head disposed at an end of the elongated stem and shaped to receive a golf ball; in which at least a portion of the golf tee is formed of a negative Poisson's ratio (NPR) foam material, in which the portion of the golf tee has a Poisson's ratio of between 0 and −1, and in which the NPR foam material includes an NPR metal foam, an NPR ceramic foam, or an NPR-PPR composite foam.

This invention is a golf tee which folds in three sections articulated to each other. When folded, the tee is compact and its pointed tip is shielded. Compactness is achieved by notching the top of the tee or by offsetting the two articulations with respect to each other. The tee is extensible by a linear ratchet or by a screw, thereby allowing the player to adjust the height. The sections can be assembled at their articulation by a snap-on mechanism. The top section can be made springy by including a coil spring between the articulation and the head of the tee. A snap-lock mechanism allows the tee to remain securely locked in the deployed configuration and in the folded configuration. The folding structure of the tee provides directional information to the player, either pointing backward to indicate the best backswing direction or forward indicating the best follow-through direction.

This invention is a golf tee which folds in three sections articulated to each other. When folded, the tee is compact and its pointed tip is shielded. Compactness is achieved by notching the top of the tee or by offsetting the two articulations with respect to each other. The tee is extensible by a linear ratchet or by a screw, thereby allowing the player to adjust the height. The sections can be assembled at their articulation by a snap-on mechanism. The top section can be made springy by including a coil spring between the articulation and the head of the tee. A snap-lock mechanism allows the tee to remain securely locked in the deployed configuration and in the folded configuration. The folding structure of the tee provides directional information to the player, either pointing backward to indicate the best backswing direction or forward indicating the best follow-through direction.

A golf tee assembly includes a support that has a plurality of arms. The support may be positioned on a support surface to define a vertically oriented arm and a plurality of supporting arms. A plurality of tees is provided and each of the tees is removably coupled to the support. The tee corresponding to the vertically oriented arm may support a golf ball thereby facilitating the golf ball to be struck. A plurality of extensions is provided. Each of the extensions is removably positioned between the arms and the tees. Thus, the tees are spaced a selected distance from the support.

This invention relates to the golf industry, it is comprised of 2 tees connected with a line that tethers the 2 tees together which minimizes the possibility of loss. The invention is used for teeing up, or elevating the golf ball from the ground when the rules allow so. The invention is designed to eliminate waste, save time, increase safety, and soften the environmental impact of traditional golf ball tee manufacture.

This invention relates to the golf industry, it is comprised of 2 tees connected with a line that tethers the 2 tees together which minimizes the possibility of loss. The invention is used for teeing up, or elevating the golf ball from the ground when the rules allow so. The invention is designed to eliminate waste, save time, increase safety, and soften the environmental impact of traditional golf ball tee manufacture.

A golf-tee mount is an apparatus that easily and effectively secures a golf-tee body into the ground. The apparatus includes golf-tee body, a mountable base, and a plurality of spikes. The golf-tee body upholds a golf ball that is about to be hit and is preferably made of a flexible material. The mountable base stabilizes and attaches the golf-tee body into the ground and allows the golf-tee body to be interchangeable as needed and is preferably made of a rigid material. Furthermore, the mountable base may remain connected with the ground while interchanging the golf-tee body. The plurality of spikes penetrates the ground and allows a user to easily fasten the mountable base, and consequently the golf-tee body, into the ground. The golf-tee body further includes a plurality of finger-receiving grooves that allows the user to better grip the golf-tee body while connecting the golf-tee body with the mountable base.

A golf-tee mount is an apparatus that easily and effectively secures a golf-tee body into the ground. The apparatus includes golf-tee body, a mountable base, and a plurality of spikes. The golf-tee body upholds a golf ball that is about to be hit and is preferably made of a flexible material. The mountable base stabilizes and attaches the golf-tee body into the ground and allows the golf-tee body to be interchangeable as needed and is preferably made of a rigid material. Furthermore, the mountable base may remain connected with the ground while interchanging the golf-tee body. The plurality of spikes penetrates the ground and allows a user to easily fasten the mountable base, and consequently the golf-tee body, into the ground. The golf-tee body further includes a plurality of finger-receiving grooves that allows the user to better grip the golf-tee body while connecting the golf-tee body with the mountable base.