Variable height golf tee
An adjustable height golf tee whereby a golfer can set his/her preferred tee height for whichever club he or she decides to use, employs an interference fit between two components namely a plug which is mounted on a base and has a series of external ridges, and a tee piece which is hollow and resilient and preferably has at least one internal ridge. The tee is intended to be used with an existing practice mat, which would hold the base in position. In other embodiments the tee piece may have multiple internal ridges instead of or in addition to the plug being beaded.
This invention relates to a height adjustable golf tee to be used on a practice mat at driving ranges.
BACKGROUND ARTGolf tees lift the golf ball clear from the ground in order to strike the ball more cleanly. There are in existence rubber golf tees designed to fit through a practice mat, theses are available in two sizes only.
These rubber tees do not provide a golfer with enough choice as to which height he or she plays the ball from.
SUMMARY OF THE INVENTIONAccording to the present invention a height adjustable golf tee is provided comprising a hollow resilient tee piece which is adjustably fitted onto a beaded plug mounted on a base, in which respect either the plug is provided externally with a series of ridges, or the hollow tee piece is provided internally with at least one ridge, or both are so formed, and the tee piece is slidably adjustable on the plug as an interference fit thereon. A “beaded” plug means a plug formed with at least one external ridge.
In embodiments where the plug is provided with a series of ridges, the plug may be similar to a mechanical gas tap style fitting in which a series of convex bulges are formed on the outside of a laboratory style gas tap. This plug could be a solid beaded shaft or it could be hollow.
The plug is provided with a base, which may be disc-like with a flat underside.
The plug is adapted in size and shape to secure the hollow golf tee piece, which is preferably soft and rubberised, at the preferred height for golf club selection as determined by the individual golfer.
Both the material of the tee piece and the material of the plug and its base are sufficiently strong and/or resilient to withstand being stood upon and/or being hit by a golf club.
BRIEF DESCRIPTION OF THE DRAWINGSThe invention will be described further, by way of example, with reference to the drawings in which:
Referring to FIGS. 1 to 4 of the drawings a first practical example of the golf tee of the invention comprises two separate components, namely a plug 2 and a tee piece 3. The plug 2 is externally beaded; i.e. it has a series of separate encircling convex ridges 4, and it is mounted centrally, upstanding from a circular base 5. The base may be formed integrally with the upstanding plug 2, e.g. moulded in one piece. The plug may be hollow. In use, as shown in
The tee piece 3 is formed as a tube of firm hardwearing elastic type material, such as a rubber-based compound. In order that a golfer is able to position the ball at his preferred height, the tee piece 3 fits over the plug 2 tightly, as shown in
The embodiment shown in
Although there are a series of ridges 14 in the plug 12 and grooves 24 inside the tee piece 23, these do not provide discrete adjustment positions only when they interfit. They merely facilitate the support of the tee piece 23 at any selected height, minimising risk of dislodgement, the tee piece 23 again being infinitely slidingly adjustable on the plug 12.
Plug 32 is integrally formed with circular base plate 35, and is formed externally with four shallow concave grooves 31 and three intervening ridges 34, which are not so rounded as in the previous embodiments.
A tapered section 33 is provided at the top of the plug to facilitate the placing of the tee piece 40 thereover.
The tee piece 40 is a hollow cylinder, as previously, of resilient, flexible material, such as rubber or synthetic rubber. It has a champfer 48 internally around its top edge to facilitate steady support of a golf ball 50. It also has a single internal ridge or lip 42 at a spacing from its lower end. The purpose of this lip 42 is primarily to define a lower region in which the plug 32 can be located without the tee piece 40 falling off, i.e. without complete removal. Once the tee piece 40 is pushed down further its possibility for height adjustment and being held at any selected height begins. This transition will be readily apparent by the resistance offered as the tee piece 40 is pushed down until the lip 42 engages around the surface of the plug 32.
In further embodiments, not illustrated, the plug could have a smooth cylindrical outer surface, perhaps with an enlargement at its upper end only to inhibit removal of the tee piece, while the tee piece has a series of internal ridges to make a suitable sliding interference fit with the plug.
Claims
1. A height adjustable golf tee comprising a hollow resilient tee piece which is adjustably fitted onto a plug mounted on a base, in which respect the plug is externally formed with a series of ridges and the tee piece is slidably adjustable on the plug as an interference fit thereon.
2. A golf tee as claimed in claim 1 wherein the material of the tee piece and the material of the plug and its base are sufficiently strong and/or resilient to withstand being stood upon and/or being hit by a golf club.
3. A golf tee as claimed in claim 1 wherein the plug has an enlargement at its upper end to inhibit removal of the tee piece.
4. A golf tee as claimed in claim 1 wherein the tee piece has an inward lip at or neat its lower end to inhibit its removal from the plug.
5. A golf tee as claimed in claim 1 wherein the tee piece is formed with a single internal ridge to facilitate retention of the tee piece relative to the plug in a selected adjusted position.
6. A golf tee as claimed in claim 1 wherein the tee piece is formed with a series of internal ridges to facilitate retention of the tee piece relative to the plug in a selected adjusted position.
7. A golf tee as claimed in claim 1 wherein the plug is formed with at least three external ridges.
Type: Application
Filed: Aug 11, 2004
Publication Date: Feb 16, 2006
Inventor: Paul Butterworth (Warrington)
Application Number: 10/915,414
International Classification: A63B 57/00 (20060101);