generally , during the game of golf it is often necessary to mark the location of the player &# 39 ; s golf ball on the green , after which the ball is removed from the green , only to be returned to the marked location when it is the golfer &# 39 ; s turn to putt . this is typically done in order to permit another golfer to make his or her putt without risking contact with another golfer &# 39 ; s ball . the marking of the ball &# 39 ; s location is usually accomplished through a somewhat ad hoc method . for example , golfers may place a coin , a tee , a piece of paper or some debris at the ball &# 39 ; s location . naturally , such devices have limitations and deficiencies when it comes to being used as a ball position marker . a coin may fall between the blades of longer grass losing its specific location and may still serve as an obstacle to another golfer &# 39 ; s putt . a tee or other debris may also remain an obstacle while being somewhat imprecise for marking . paper or other similar devices can easily be lost or change locations , especially in less than ideal weather conditions . in all of these devices a golfer is required to have or find an item that will work on an ad hoc basis . also , many existing marking devices tend to become litter on the course . such litter both diminishes the esthetics of the course and can be harmful to the green and / or grounds keeping equipment . this invention is a device that provides an easy way to accurately mark a ball &# 39 ; s location on the green of a golf course that will not interfere with or is an obstacle to another golfers putt . this invention works by dispensing a powder ; chalk , baking soda , flour and the like , on the desired green location in a controlled and easy to use manner . the present invention is provided in two embodiments : a hand held sized embodiment and a golf club handle embodiment . each embodiment includes a container for holding the powder , a removable container cap with a ball opening , and a spring - loaded ball . in order to release powder the ball is pressed ( typically by contact with the ground ), compressing the spring and uncovering the opening in the cap , thereby permitting the powder to fall from the container onto the ground . when the ball is released , the spring forces the ball back into the ball opening , thereby closing the opening and ending the release of the powder . additional detail on the present preferred embodiments of this invention is shown in the figures and is described below . fig1 shows a perspective view of the hand - sized embodiment 100 of this invention . a powder container 101 , which in its present preferred embodiment is a generally transparent plastic tube , composed of a side wall 108 , a bottom 106 and an open top 109 , although in alternative embodiments can be made of another composite material , metal , glass , cardboard , and / or stiffened paper products or the like . although it is desirable that the container 101 be transparent in order to permit a user to easily identify the quantity of powder available , alternative embodiments need not be transparent in order to function . also , alternative shaped containers , including spherical , cylindrical , rectangular box shapes or the like can be substituted with departing from the concept of this invention . within the container 101 is a quantity of powder 107 . the powder 107 is preferably a chalk , a water - soluble mixture , or a biodegradable substance . the powder 107 preferably is granulized and colored so as to contrast with the color of the turf of the green . typically , the powder 107 is a white chalk , although alternatives , as noted above , can be substituted without departing from the concept of this invention . also located within the container is a spring element 105 . this spring 105 has one end on the inner bottom 106 of the container and the other end in contact with or placing spring pressure a ball closure 104 that is provided within the opening 103 in the cap 102 that is attached or fixed to the top 109 of the container . in alternative embodiments of this invention , the spring 105 need not extend to the bottom 106 of the container and may be extended through an extension to place force on the ball closure 104 without the spring 105 physically coming into contact with either the ball closure 104 or the bottom 106 of the container . the cap 102 may , in some embodiments , be removable to facilitate refilling of powder 107 within the container 101 or may be fixed in place on the top 109 of the container 101 by pressure fit , adhesive , clips , heat treatment , or other similar means . the ball closure 104 operates , under force from the spring 105 , to keep the cap opening 103 normally closed , thereby keeping the powder 107 from being released or lost unintentionally . however , when pressure is placed on the exterior 110 of the ball closure 104 , the spring 105 is compressed , exposing the opening 103 in the cap 102 , thereby permitting the powder 107 to be released . typically , the device 100 is inverted , with the pressure on the exterior 110 of the ball closure 104 being accomplished by pressing the ball closure 104 against the turf of the green . under such circumstances , the exposed opening 103 in the cap 102 becomes the exit for the powder 107 simply by virtue of gravitational force on the powder 107 . the released powder leaves a small , temporary but distinct mark on the green of the placement location of the golf ball . as soon as a small amount of powder 107 has been released , the typical user will lift the device 100 so that the ball closure 104 is no longer in contact with the turf , the spring 105 will press the ball closure 104 and the opening 103 in the cap 102 will be closed , thereby keeping further powder 107 from escaping . since the powder 107 is typically released in small portions and is either water soluble or biodegradable , essentially no permanent marking of the green is made . in alternative embodiments of this invention , the ball closure 104 need not necessarily be a ball . any number of other shapes , including but not limited to , cones , pyramids , other more complex combinations of three - dimensional shapes can be substituted without departing from the concept of this invention . a ball closure 104 is presently used in the preferred embodiment for the sake of simplicity . fig2 a , 2 b and 2 c show top , side and bottom view of the present hand sized embodiment 101 of this invention . in the top view , of fig2 a , the ball closure 104 is shown within the cap opening 103 , which is located approximately in the center of the cap 102 . in this embodiment , the cap 102 is fixed to the top 109 of the container 101 , shown here as a dotted line within the cap . fig2 b , shows the side view of this present embodiment 100 of the invention . this view , fig2 b , better shows the extent of the spring 105 , which in this embodiment extends , within the container 101 , from the ball closure 104 to the bottom 106 of the container 101 . fig2 c shows the present bottom 106 of the container 101 . as can be seen , in this present embodiment 100 , the container 101 is generally cylindrical in shape . when the container 101 is in an upright position , the powder 107 tends to settle towards the bottom 106 of the container and will generally fill some but not all of the interior of the container 101 . fig3 shows a perspective view of the golf club embodiment of this invention . in this embodiment 300 , the marker device 310 , while generally constructed in a manner similar to that described above , is fitted into a cavity 301 in the top of a standard golf club or other pole 305 . the cap 302 extends from the top surface 306 of the club or pole 305 , with the ball closure 304 in place normally closing off the opening 303 . in use , the club or pole 305 is inverted , with the golfer pressing the spring loaded ball closure 304 against the turf of the green , exposing the opening 303 and permitting the powder to escape . fig4 shows a cut - away view of the golf club embodiment 300 of this invention . this view shows the detail of the present marker device within the cavity 301 of the club or pole 305 . the powder 308 is shown inside the container 307 , normally settled toward the bottom 309 of the container 307 , and the spring 306 is shown to apply spring pressure on the ball closure 304 , thereby keeping the opening 303 in the cap 302 normally closed . in the present preferred golf club embodiment 300 of this invention the marker device 310 is removable and replaceable , typically , although not exclusively , by gripping the cap 302 and drawing the cap 302 along with the rest of the marking device 301 outward from the handle of the club or pole 305 . it is to be understood that the above described and referenced embodiments and examples are merely illustrative of numerous and varied other embodiments and applications , which may constitute applications of the principles of the invention . these example embodiments are not intended to be exhaustive or to limit the invention to the precise form , connection or choice of components disclosed herein as the present preferred embodiments . obvious modifications or variations are possible and foreseeable in light of the above teachings . these embodiments of the invention were chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to make and use the invention , without undue experimentation . other embodiments may be readily devised by those skilled in the art without departing from the spirit or scope of this invention , as determined by the appended claims when they are interpreted in accordance with the breadth to which they are fairly , legally and equitably entitled .
a golf ball location marker is provided that provides controlled release of a powder under user control for marking the location of a golf ball on a green in a manner so as to avoid the possibility of interfering with subsequent golf putts , while precisely marking the ball &# 39 ; s location and without permanently marking the green or causing harm to the green . several embodiments of this invention are provided , specifically for use as a hand - held device , or alternatively as installed in the end of a golf club or a walking stick or pole .