Adjustable golf tee

Abstract

An adjustable golf tee that provides a simple adjustable golf tee for use on driving ranges. The general purpose of the present invention is to provide a new and simple adjustable golf tee that can be rotationally adjusted in height and contains a plurality of screw threads that add stability and durability to the golf tee. The inventive device includes an adjustable first unit and a base supporting unit which contains a base and a planar bottom surface that can be embedded underneath a commercial mat of a driving range. The adjustable first unit and base support unit contains a plurality of screw threads which provides stability, durability and allows for the adjustable first unit to be rotationally adjusted in height, while retaining its user customizable height position despite enduring constant and repeated strikes from a typical golf club. The top end of the adjustable first unit contains a concave structure to accommodate a golf ball and a lower end having an arrowhead like structure slightly larger that the central aperture of the base support unit. The base support unit comprising of a threaded bore, bore and bore walls. Base consisting of a cylindrical support. The planar bottom surface is preferably circular but can be of any configuration and is preferably placed underneath a driving range mat.

1 . An adjustable golf ball tee, comprising:
 a). A base support unit having an aperture in the center;   b). An adjustable first unit inserted perpendicularly into said aperture of said base support unit;   c). Said adjustable first unit being rotationally adjustable in height to extend beyond said base support unit;   d). Said adjustable first unit having a plurality of screw threads;   e). A concave structure at the top of said adjustable first unit to accommodate a golf ball;   f). Said base support unit containing a plurality of screw threads;   g). Said base support unit containing a planar end surface;   h). Said plurality of screws in said adjustable first unit and said base support unit; and   i). Said adjustable first unit containing an arrowhead structure at the bottom which is slightly larger than said central aperture in said base support unit, to prevent disassociation of said adjustable first unit from said base support unit.   
   
   
       2 . The adjustable golf tee of  claim 1 , wherein all the elements are made of synthetic material, which will endure repeated striking with a golf club. 
   
   
       3 . The adjustable golf tee in  claim 1 , wherein said end surface is adapted to lay underneath a commercial mat. 
   
   
       4 . The adjustable golf tee of  claim 1 , wherein said plurality of screws of both said adjustable first unit and said base support unit, provide increased stability and prevent said adjustable first unit from deviation from user customizable height position.