MAGNETIC DISPLAY FOR USE BY COACHES AND TRAINERS OF VARIOUS SPORTS

Abstract

A display device (10) for diagramming a play includes a housing (12) having a handle (14) for lifting and carrying the housing. A bottom (16) and sides of the housing form a recess is filled with a layer (18) of magnetic particles and a display panel (20) on which an outline of a field of play, or a portion thereof, is drawn. The panel fits over the layer. A stylus (24) has a tip end (26) which, when brought into contact with, or in close proximity to, an outer surface of the panel attracts the magnetic particles to the underside of the form an image (28-32) visible to anyone looking at the panel. The user can create as many images as he needs to diagram a play for his team. When done, the user draws a slide (36) underneath the length of the panel to erase the display.

Description

DESCRIPTION OF THE DRAWINGS

In the accompanying drawings which form part of the specification:

FIG. 1 is a perspective view of the display device of the present invention for diagramming plays, a portion of the device being shown in section, and including a stylus for writing on the surface of the display; and

FIG. 2 is a perspective view of the display device displaying one-half of a basketball court;

FIG. 3 is a perspective view of the display device displaying a portion of a football field;

FIG. 4 is a perspective view of the display device displaying a portion of a soccer field;

FIG. 5 is a perspective view of an alternate embodiment of a display device;

FIG. 6 is a perspective view of a bottom of the display device; and

FIG. 7 is a enlarged perspective view of a clip of the display device.

Corresponding reference numerals indicate corresponding parts throughout the several figures of the drawings.

DETAILED DESCRIPTION

The following detailed description illustrates the invention by way of example and not by way of limitation. The description clearly enables one skilled in the art to make and use the invention, describes several embodiments, adaptations, variations, alternatives, and uses of the invention, including what is presently believed to be the best mode of carrying out the invention. Additionally, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

As shown in FIGS. 1-4, an embodiment of the present invention, generally referred to as a display device 10, includes a generally rectangular case or housing 12 preferably made of a molded, lightweight, high-impact plastic material, and non-magnetic material. A molded handle 14 extends from one end of housing 12 for convenient lifting, holding and carrying of the display device 10. The housing 12 includes a generally flat lower member 16 with side members 17 extending upwardly from the edges of the lower member 16. A display panel 20 extends between the side members 17 to define a compartment within the housing 12. A layer of magnetic particles 18 reside within in the compartment 19 (FIG. 1).

The display panel 20 and magnetic particles 18 interact to form images on the display panel 20, preferably using a type of magnetophoretic phenomena. For example, the magnetic particles 18 can comprise either microcapsules of a magnetic material or a beehive cone of particles. A display device 10 using such magnetophoric phenomena allows a user to repeatedly form images on the display panel 20, that can be readily erased without leaving a residual image.

A template 21 on the display panel 20 represents a playing surface of a sport or athletic activity. The template 21 can be applied to the display panel 20 using any appropriate method, such as silk-screening, engraving, etching, printing, an adhesive label, or other suitable method. The template 20 can represent the playing surface of any sport or athletic activity, such as, baseball, soccer, basketball, football, tennis, volleyball, hockey, rugby, field hockey, lacrosse, cricket, dodgeball, or other sports. For example, the template 120 illustrated in FIG. 2 represents half of a basketball court having a basket B, backboard BB, free throw line FL, three-point arc TP, and a portion of the center circle CC at the half-court of the basketball court. Three dots 28 representing different players are shown on the display.

In FIG. 3, the template 220 represents a portion of a football field with lines L extending completely across the field at five-yard intervals, together with hash marks H on either side of the field, and along the side of the field (four marks in all) denoting each yard of play. Again, three dots 28 representing different players are shown on the display.

In FIG. 4, the template 320 represents a soccer field with goals G at each end of the field, corner kick areas CK at each corner of the field, a goalie box GB, a penalty kick area PK, a center line CL, and a center circle CE.

A writing instrument, preferably a stylus 24, includes a magnetic tip 26 for writing on the display panel 20. When not in use, the stylus 24 can be stored within a cavity 27 of the housing 12. As a user brings the tip 26 into contact with or in close proximity to the outer surface of the display panel 20, the tip 26 attracts the magnetic particles 18 to the inner surface of the display panel 20 with a magnetic field so that the particles 18 form an image (e.g., a dot 28) which is visible on the outer surface of the display panel 20. In this way, the user can move the tip 26 of the stylus 24 about the display panel 20 to form a desired image. The user lifts the tip 26 from the display panel 20 to stop formation of the image. If the user then places the stylus against or adjacent another location on the display, he will create another dot, and can begin another image. For example, a desired image can include a straight line 30, curved line 32, dot 28, an arrow 34 to indicate a direction of movement, words, such as, “block” or “pass” to indicate a particular activity, or any combination thereof.

The image on the display panel 20 can be erased with a slide member 36 moveably mounted with a slot 37 of the housing 12 and positioned below the inner surface of the display panel 20. The slide member 36 produces a magnetic field opposite to that created by the tip 26 of stylus 24 and repels the magnetic particles away from the inner surface of the display panel 20, thereby erasing the display panel 20. The display panel 20 is now “clean” and the user can use the stylus 24 to create a new image. The slide member 36 erases the display without the need for any other cleaning materials, such as an eraser, or a spray bottle and rag.

The display device 10 is preferably made of plastic materials that provide both durability and can withstand exposure to elements that are present during both indoor and outdoor athletic activities.

Changes can be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. For example, the template can be removeable and replaceable, such as an overlay.

In an alternate embodiment (FIGS. 5-7), the display device 10 does not include a handle 14, but rather includes a clip 40 protruding from the lower surface of the display device 10. The alternate embodiment also includes feet 42, such as rubber or felt, that support the display device 10 when placed on a supporting surface. The feet 42 reduce slipping of the device on the supporting surface. In addition, the stylus 24 is attached to the display device 10 with a tether 44, such as a cord, string, and the like.

Claims

1. A display device for diagramming a play for a player or team, comprising: a housing;a display panel attached to the housing and defining a compartment within the housing, the display panel having a template representing a playing surface for an athletic activity;a plurality of magnetic particles within the compartment; anda writing instrument that can engage the display panel to create an image representing a players position and movement during a play, the writing instrument creating a magnetic field drawing the magnetic particles to an inner surface of the display panel where they are visible by the player.

2. The display device of claim 1, the writing instrument comprising a stylus having a magnetic tip which, when brought into contact with, or in close proximity to, an outer surface of the display panel attracts the magnetic particles to the inner surface of the display panel to form an image visible to the player looking at the panel.

3. The display device of claim 1, further comprising a slide member moveably attached to the housing and positioned adjacent the inner surface of the display panel so that the slide member moves along the inner surface of the display panel to remove the magnetic particles from the display panel.

4. The device of claim 1, further comprising a means for erasing the display on the panel.

5. The display device of claim 4, the erasing means comprising a slide member moveably attached to the housing and positioned adjacent the inner surface of the display panel so that the slide member moves along the inner surface of the display panel to remove the magnetic particles from the display panel.

6. The display device of claim 1, in which a drawing surface provided by the display panel employs magnetophoretic phenomena to produce the display.

7. The display device of claim 1, the housing comprising a handle for lifting and carrying the device.

8. The display device of claim 1, wherein the template is a playing surface selected from the group consisting of baseball diamond, soccer field, basketball court, football field, tennis count, volleyball court, hockey rink, rugby field, field hockey field, lacrosse field, cricket field, or dodgeball court.

9. A display device for diagramming a play for a player or team, comprising: a housing;a display panel attached to the housing and defining a compartment within the housing, the display panel having an image of at least a portion of a field of play; and,a plurality of magnetic particles within the compartment;a diagramming means by which a user diagrams a play to be performed on the field of play including indicating the starting position of at least one player on the field of play and his movements subsequent to the start of play on the field of play, the diagramming means creating a magnetic field drawing the magnetic particles to a surface of the display panel where they are visible by the player, with the particles depicting the player and his movements.

10. The display device of claim 9, the diagramming means comprising a stylus having a tip which, when brought into contact with, or in close proximity to, an outer surface of the display panel attracts the magnetic particles to the inner surface of the display panel to form an image visible to the player looking at the panel.

11. The display device of claim 9, further comprising means for erasing the display on the panel.

12. The display device of claim 11 in which the erasing means includes a slide member movable over the inner surface of the display panel to remove the magnetic particles from the display panel.

13. The display device of claim 9 in which a drawing surface provided by the panel employs magnetophoretic phenomena to produce the display.

14. The display device of claim 9, the housing comprising a handle for lifting and carrying the device.

15. The display device of claim 9 wherein the image is a field of play selected from the group consisting of baseball diamond, soccer field, basketball court, football field, tennis count, volleyball court, hockey rink, rugby field, field hockey field, lacrosse field, cricket field, or dodgeball court.

16. A method of diagramming a play for a player or team on a display device, comprising: providing a housing;providing a display panel attached to the housing defining a compartment within the housing, the display panel having a template representing a playing surface for an athletic activity;providing a plurality of magnetic particles within the compartment; andproviding a writing instrument;moving the tip of the writing instrument along the display panel to create an image by drawing the magnetic particles to an inner surface of the display panel where they are visible by the player or team;creating an image on the display panel with the writing instrument that represents a player or a teams movement about the playing surface during a play.

17. The method of diagramming a play for a player or team on a display device of claim 1, further comprising: providing a slide member moveably attached to the housing and positioned adjacent the inner surface of the display panel; andmoving the slide member along the inner surface of the display panel to remove the magnetic particles from the display panel.

18. The method of diagramming a play for a player or team on a display device of claim 1, wherein the template is a playing surface selected from the group consisting of baseball diamond, soccer field, basketball court, football field, tennis count, volleyball court, hockey rink, rugby field, field hockey field, lacrosse field, cricket field, or dodgeball court.

19. The method of diagramming a play for a player or team on a display device of claim 1, in which a drawing surface provided by the display panel employs magnetophoretic phenomena to produce the display