referring to fig1 and 2 , shown therein and generally designated by the reference character 10 is a preferred embodiment of the retractable projectile device constructed in accordance with the following description . the device 10 includes a strap 11 , a housing 20 , a leash 30 , and a projectile 40 . as may be seen more clearly in fig2 , the housing 20 includes a generally tear shaped body 21 that includes a longitudinal bore 22 that runs though the pointed portion 23 of the housing 20 for the leash 30 to pass through . the housing 20 includes the retracting mechanism that is common in the prior art and includes a spool 24 that is used to hold the leash 30 . the spool 20 is functionally adapted to a spring 25 such that when the leash 30 is pulled from the spool 24 the spring 25 is put under tension . when the tension in the leash is below that of the spring 25 , the tension in the spring 25 is released and the spool 24 is reversed and the leash 30 is retracted back into the housing 20 through the bore 22 . adapted to this common retracting mechanism is a pulley 26 , which partially engages the leash 30 and allows the leash 30 to enter and exit the housing 20 through the bore 22 in a direction that is substantially perpendicular to and pointing toward the center of the spool 24 rather than in a direction that is more tangential . this substantially perpendicular association allows the leash 30 to pass more freely through the bore 22 . the pulley 26 is mounted to the housing by use of a pin 27 , which allows the pulley 26 to freely rotate about its axis . the strap 11 can be made of a variety of materials such as elastic , velcro ™, rubber , plastic , or any other material that allows a user to securely attach the device 10 to the user ( e . g . wrist or shin ) or some other object . the leash 30 can be made of a variety of materials such as common rope , string , chord . as shown in fig1 and 2 , the projectile 40 is fixedly attached to the leash 30 by means common in the art , such as a clip , loop , sewn or any other means whereby the projectile can be fixedly attached to the leash but also where the projectile can be switched from one form to another by the user based on the type of game to be played . in the first embodiment , as also shown in fig4 , the projectile is substantially ball shaped and includes a front surface 41 and rear surface 42 for attachment to the leash 30 . the front surface 41 may include retrieving means such as a magnet or velcro ™ so that when the projectile comes in contact with a receptive surface on an item of interest , the item will attach to the projectile and the item 51 will be retrieved with the projectile . see fig2 , for an example and below for further discussion of the operation of the device 10 . preferably , the projectile is comprised of a been - bag type material so that it can partially absorb the impact when a user advances the projectile toward the item of interest 51 . the partial absorption allows for the improved attachment of the projectile to the item of interest 51 , and lessens the chance that the projectile merely bounces off the item 51 . projectiles 40 of other forms are contemplated and include a projectile 40 with suction cups 43 about its front 41 and rear surface 42 . see fig5 . the projectile 40 may also be formed in different shapes , such as the spider shown in fig6 . another retrieving means is shown in fig7 . here the projectile 40 is made of a sticky semi - malleable material such as tpr that is common in the art and adheres to a broad range of materials . the projectile 40 does not have to include retrieving means and an example of such a projectile is shown in fig8 . referring now to fig3 , a method of using the projectile in a retrieving game is shown . in this example , a board 50 is used in conjunction with the retractable projectile device 10 . the board may include various items 51 that are shaped or colored in different ways . the items 51 detachably adhere to the board using various attachment means such as , magnets , velcro ™, suction cups , hooks or any other similar mechanism that allows the items 51 to be detachably attached to the board 50 . a user or player would strap the device to the wrist , just above the hand , and in a way so that the body 21 would be adjacent to the under surface of the wrist ( opposite the way a conventional wristwatch is worn ). in this orientation the user would be able hold the projectile in the palm of the hand . the user would then select the item of interest 51 that it wished to retrieve . the user would then advance the projectile 40 preferably in an underhand motion toward the item 51 . fig3 b . the force of the throw would overcome the spring 25 and the leash 30 would unwind from the spool 24 and exit through the bore 22 . in this example , the front surface 41 of the projectile 40 would include retrieving means such as the loop portion of a velcro ™ hook and loop assembly ; the item 51 would then have the hooked surface 52 , or vice versa . once , the projectile 40 makes contact with the item 51 , the front surface 41 engages the surface 52 of the item and the two surfaces detachably bind to one another . fig3 c . after contact with the item 51 , the projectile &# 39 ; s forward motion is stopped and the tension in the leash is now lower than the tension created in the spring 25 causing the spool 24 to reverse direction and the leash 30 is drawn back into the housing 20 . fig3 d . as the projectile returns the user attempts to catch the projectile 40 and the attached item 51 in the palm of its hand . fig3 e . the item is removed and either the player goes again until he or she fails , or the other player gets a chance . if , however , the player engages the wrong item , point may be taken away . the player that successfully removes their items first is deemed the winner . it should be appreciated that the actual method of how the game is played could be varied and yet not fall outside the scope of the present disclosure . further , the retrieving mechanism in the above - described game could be a projectile 40 with a magnetized , suction cup , sticky , or any other surface that would allow for the detachable attachment to the item of interest 51 . in a further embodiment , the projectile 40 does not have to include retrieving means and the user instead may use the projectile to knock specific targets down with retractable projectile device 10 . in this embodiment , a cluster of objects are arranged and a player then picks and possibly announces the target in the cluster that he or she is electing to knock over . the cluster of objects would be so arranged so that certain targets would have a greater point value because the level of skill required to knock them down would be higher than others . if the player fails to knock down the intended target he or she would receive no points . if the player instead knocks down a different target or targets , the player would lose points . the retractable projectile device 10 may also be used as a practice device for certain sports such as golf , tennis , baseball , or any other sport where the instant retraction of the projectile , in this case the ball associated with the given sport , would increase the efficiency and effectiveness of a given practice session . for example with golf , the projectile could be an actual golf ball that is fixedly attached to the leash 30 . the user would then secure the device 10 to an object such as a grounded stake by the strap 11 or other means . the user would then hit the ball with a golf club and would thereby receive feedback on the quality of the shot based on the height , distance and direction of the ball . once the leash 30 and ball retracted back to the housing 20 , the user would be ready for the next shot . while the present disclosure has been described in connection with what is considered the most practical and preferred embodiment , it is understood that this disclosure is not limited to the disclosed embodiments , but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements .
this application relates to a retractable device that takes the retractable leash concept and adapts it to a projectile . the tethered projectile can be advanced by the user by kicking , throwing , hitting , or any other method of advancing a projectile . when the user initially advances the projectile , for example by throwing , the momentum of the projectile overcomes the spring force and the projectile advances a certain distance relative to the force applied to it . once the projectile &# 39 ; s momentum diminishes to a level below the spring force , the spring causes the spool to reverse direction and the slack is taken up and the projectile is retrieved .