US20060217220A1 - Instructional baseball - Google Patents

Abstract

An instructional baseball used for the art of teaching the proper techniques of throwing a curveball is shown having a spherical body with an integrally formed fin extending from the body in a figure-8 path which extends around the outer surface of the body in a figure-8 path similar to the stitching of a conventional baseball. In other preferred embodiments an elongated V-shaped groove is formed in the outer surface of the body with a fin disposed within the groove also following the same figure-8 path as the V-groove. The fin acts as an air shield creating greater drag forces on the baseball as it is thrown through the air with a spinning motion. The greater drag forces increase the Magnus force on the ball, allowing it to curve move dramatically then that of a conventional baseball. Increasing the curve rate of the baseball will serve to help pitchers more easily see the results of their throwing techniques and ultimately improve their curveball throwing skills. To fill the gap left on each side of the fin in the grooved embodiments and give the pitcher a surface to grasp, cross braces are set perpendicular to the fin member and are spaced evenly along the figure-8 path of the groove and fin.

Description

CROSS REFERENCE TO RELATED APPLICATIONS
• This is a continuation in part of application Ser. No. 10/950,548, filed Sep. 28, 2004.
FIELD OF THE INVENTION
• This invention relates to a baseball, and more particularly, to an instructional baseball which is designed to curve more dramatically when thrown than that of a conventional baseball. The instructional baseball is intended to help pitchers learn the art of throwing curveballs. Generally, according to the principle behind throwing a curveball, as the ball travels through the air in a spinning motion, the side which is spinning toward the direction of travel is traveling at a greater speed than the side which is spinning away from the direction of travel and therefore, the side which is traveling at a higher speed has more drag forces applied to it, creating a Magnus force which moves the ball in a sideward, curving direction. This invention is intended to increase the drag forces on the spinning baseball creating a larger Magnus force which results in improved curving action compared to conventional baseballs. With conventional baseballs, the general surface of the baseball provides some drag forces against the ball, although, much of the drag forces are created from the stitching or seam area of the ball when it is thrown with a rotating spin. Some balls are provided having raised seams to help obtain more action on the ball for both pitching and general play. Learning the art and skill of throwing a curveball is a very difficult process. Even if the pitcher uses the proper techniques it is sometimes hard to see the results, especially when first learning. The premise of this new baseball is that it will exaggerate and highlight the curve rate so that a pitcher will know whether or not that the techniques that are being used are correct. Once the pitcher believes that the techniques are proper, he can then build upon them making the learning process simpler.
BACKGROUND OF THE INVENTION
• U.S. Pat. No. 6,612,942 B1 describes and claims a baseball that is designed for repeated use with a pitching machine. The baseball has a smooth surface upon which a plurality of dimples or indentations are provided. The said indentations serve to induce turbulent airflow over the surface of the baseball, thereby reducing the drag on the ball and serving to stabilize the flight of the ball. The ball further includes a plurality of slot-shaped depressions formed in a pattern similar to the stitch pattern of an actual baseball.
• U.S. Pat. No. 6,592,477 relates to a baseball which includes a core and two 8-shaped cover pieces which are glued to the outer surface of the core. The outer surface also has an 8-shaped seam designed to form two 8-shaped recesses into which the two 8-shaped covers are received. The seam has a number of bulges intended to simulate the stitches of a typical baseball.
• U.S. Pat. No. 6,190,273 relates to a construction for a baseball or softball having a raised seam for better pitching performance where the underlying hot melt adhesive has the same durometer hardness comparable to that of the core of the ball, so that the ball will perform in the same manner whether it is hit on or off of the seam.
• U.S. Pat. No. 5,984,813 relates to an instructional baseball designed for teaching the proper manner of throwing a curveball. The instructional baseball comprises a generally spherical ball having a continuous seam, in the same manner as a typical baseball. The seam pattern creates four horseshoe shaped boundary areas on the surface of the ball, also in the same manner as a typical baseball. In the center of each of each boundary is a depression, each having substantially the same volume. The purpose of said depressions is to create a greater drag force against surface of the ball to increase the rate in which the ball will curve.
• U.S. Pat. No. 4,286,783 relates to a practice baseball designed to curve in a controllable manner when thrown in the same manner in which a conventional ball is thrown as a straight ball. The practice baseball is mostly spherical except for one area which is flat. This ball is intended to help train batters in the skill of hitting curveballs. The pitching techniques used to curve this ball differ from that of pitching techniques used to curve a conventional baseball; therefore this ball does not make a practical pitch training aid.
SUMMARY OF THE INVENTION
• An object of the current invention is to provide an instructional baseball designed to help pitchers learn how to throw curveballs.
• Another object of the invention is to provide a baseball which, when pitched with a rotating spin, curves greater then conventional balls that have the same amount of spin.
• It is another object of the invention to provide a baseball which has the same size and weight of a conventional baseball.
• It is also an object of the invention to provide a baseball that has a similar shape and feel as a conventional baseball.
• It is also an object of the invention to provide an instructional softball which has the same characteristics of the instructional baseball, except that is larger in size and weight.
• Briefly, a baseball made in accordance with the present invention comprises a generally spherical body member formed with single recessed V-shaped groove, projected inward from the surface of the body member, and following a lined figure-8 path around the outer surface of the body member, basically in the same manner as that of the seam or stitching of a conventional baseball. In accordance with a preferred embodiment, inserted into the V-groove and following theFIG. 8 path is a series of V-shaped vent member sections having a center fin member which acts as an air deflecting fin increasing the drag forces against the ball as it is thrown through the air with a rotating spin motion, causing the ball to curve more dramatically. In a modified preferred embodiment, the fin member is formed integrally with the body member and modified fin-less vent member sections are disposed over the fin member. In another modified preferred embodiment, a plurality of fin members are formed in each of the vent member sections. In still another modified embodiment, a fin extends outwardly from the generally spherical outer surface of the body member along the sameFIG. 8 pattern as in previous embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
• The accompanying drawings, which provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate preferred embodiments of the invention and, together with the description, serve to explain the principles of the invention.
• FIG. 1 is a perspective view of a preferred embodiment of the instructional baseball made in accordance with the invention.
• FIG. 2 is a slightly smaller scale perspective view of theFIG. 1 preferred embodiment shown with one of the vent member sections removed for clarity. For ease of illustration, the separate vent member sections in place on the baseball are shown as a single continuing vent member section inFIGS. 1 and 2.
• FIG. 3 is a perspective view of theFIG. 1 preferred embodiment, shown without the vent members.
• FIG. 4 is a front elevation view of theFIG. 1 preferred embodiment, shown without the vent members.
• FIG. 5 is a side elevation section view of theFIG. 1 preferred embodiment, shown without the vent members, as viewed from section lines5-5 ofFIG. 4.
• FIG. 6 is a perspective view, using generally the same scale as that ofFIG. 1, of one of the vent member sections of theFIG. 1 preferred embodiment.
• FIG. 7 is an enlarged front elevation view of theFIG. 6 vent member section.
• FIG. 8 is a side elevation section view of theFIG. 6 vent member section as viewed from section8-8 ofFIG. 7.
• FIG. 9 is a perspective view of a modifiedvent member section50.
• FIG. 10 is a front elevation view of the modifiedvent member section50.
• FIG. 11 is a side elevation section view of the modifiedvent member section50 as seen from section line11-11 ofFIG. 10. Also show inFIG. 11 is an outline view in dashed lines of a modifiedbase member60 incorporatingfin member61.
• FIG. 12 is a perspective view of another modifiedvent member70.
• FIG. 13 is a perspective view of another modifiedfin member81.
• FIG. 14 is a cross sectional view of theFIG. 13 fin member showing the fin having opposed flat face surfaces.
• FIGS.15(a)-15(e) are broken away cross sectional views showing other variations of the profile offin member81, including positive and negative tapers, spaced depressions in the surface, foraminous and foam.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
• With reference to the drawings, and in particular toFIGS. 1-10 thereof, a baseball embodying the principles and concepts of the present invention will be discussed.
• FIG. 1 illustrates a perspective view ofbaseball10 made according to a preferred embodiment of the present invention. The baseball comprises acore body member20 and a plurality of V-shapedvent member sections40 which follow a lined figure-8 path around the ball's surface, basically in the same manner as that of the stitching of a conventional baseball.Fin member41 ofvent member section40, (see in particularFIG. 8) acts as an air deflecting shield which increases the drag forces against the ball as it is thrown through the air with a rotating spin motion, causing the ball to curve more dramatically. Cross braces42 help supportcenter fin member41 and also provide anouter surface43, filling the gap betweenfin member41 andcore body member20, essentially forming a continuation of the outer peripheral surface of the body member, allowing the pitcher to holdbaseball10 with a feel similar to a conventional baseball.
• FIG. 2 is similar toFIG. 1 but additionally shows one of thevent member sections40 removed for better understanding of howvent member sections40 mate with V-groove24 ofbody member20. During assembly, twenty fourvent member sections40 are aligned into V-groove24 ofbody member20 and glued to one another and to the side walls of the groove. It will be understood that the particular number of vent members used is a matter of choice.
• FIGS. 3-5show body member20 withoutvent member sections40.Body member20 is composed of a single solid composite material which forms a generally spherical shape having one continuous recessed V-groove24 that follows a figure-8 path around the otherwise spherical surface of the body member, basically in the same manner as that of the stitching of a conventional baseball. V-groove24 comprises twoside walls25 and26 which taper down and inward from the body member's outer surface atedges27 and28, respectively, and come together atinner edge29.Body member20 has two figure-8 shapedouter surface members21 and22 which are defined byedges27 and28 of V-groove24. During assembly, V-groove24 is filled withvent members40 leavingouter surfaces21 and22 as the only visible areas ofbody member20.
• FIG. 6 is a perspective view ofvent member section40 which is a component part ofbaseball10.Vent member section40 hasbase walls45 and46 forming a generally V-shape complimentary to the V-shapedside walls25,26 ofgrooves24. The vent member section includescenter wall41 which serves as a portion of the elongated fin member extending upwardly from the juncture ofbase walls45 and46. Side walls are formed by cross braces42 which are also provided at evenly spaced intervals along the length of the vent member. In the preferred embodiment shown and described, there are a total of twenty four vent member sections which are glued side to side to one another and to body-member20 in V-groove24 making up the continuous figure-8 vent profile. Asvent member section40 mates with V-groove24 ofbody member20,upper edge47 seats so that it is aligned with theouter edge27 ofbase member10. Likewise,lower edge48 seats so that it is aligned withouter edge28 ofbody member10. With reference toFIG. 8, crossbrace42 has anouter surface43 formed with the same radius as theouter surfaces21 and22 ofbody member20, thereby providing a ball with a similar shape and feel to that of a conventional baseball.Base walls45 and46 mate with respective V-groove walls25 and26 ofbody member20 and are glued thereto.
• In use,baseball10 is thrown by the pitcher with a rotating spinning motion. This is accomplished by rolling the pitcher's wrist upon releasingbaseball10. Asbaseball10 travels through the air in a spinning manner, air is forced againstfin41 ofvent member sections40, creating greater drag forces against the ball which results in a greater Magnus force, moving the ball in a side curving motion. The pitcher holdsbaseball10 in a manner similar to the manner he would hold a conventional baseball. Cross braces42 and theouter surface43 ofvent member section40 fill in the V-notched gap aroundfin member41, allowing the pitcher's fingers to remain on the outer peripheral surface ofbaseball10.
• The concept of increasing the drag forces onbaseball10 could also be used in the design of a softball, enabling softball pitchers to also learn the art of throwing curveballs more effectively.
• FIGS. 9-11 relate to a modification of theFIGS. 1-8 embodiment. Modifiedvent member sections50 each comprises a curved plate like member formed without the fin and without the cross braces extending into the V-groove which were incorporated invent member sections40 of the first embodiment.Vent member sections50 also incorporate a raisedstitch pattern53 located betweenrows51,52 of slot holes. Raisedstitch pattern53 extends out beyond an imaginary continuation of the spherical outer peripheral surface of the baseball'sbody member60, that is, aboveouter surface54 ofvent member50, preferably by approximately 0.03 inches and is roughly 0.3 inches wide.
• A broken away portion of modifiedbody member60 ofbaseball10′ is shown inFIG. 11 in dashed lines.Body member60 comprises an air deflectingfin member61 which is formed integrally with the body member, as by extruding, and which extends along the entire length of V-groove64.Vent member section50 is configured to cover V-groove64 with vent memberside edge walls55 and56 angled to mate with V-groove side walls65 and66 ofbase member60. During assembly, eightvent members50 are placed within V-groove64 and glued into place forming a figure-8 type pattern. It will be appreciated that, while eight vent members are employed in the described embodiment, the particular number is a matter of choice.
• FIG. 12 shows a perspective view of another modifiedvent member section70 havingbase walls75,76 forming a generally V-shape complimentary to the V-shapedside walls25,26 ofgrooves24 ofvent member section40, described above.Edges77 and78 correspond toedges47,48 ofvent member section40. However,vent member section70 comprises a plurality ofwalls71 which serve as air deflecting fin members.
• In another modified embodiment,FIGS. 13 and 14show fin81 extending radially outwardly from the generally sphericalouter surface82 ofbody member80 along the same figure-8 path as in the previously discussed embodiments.Fin81 is flexible to enable one to grasp the ball in the same manner as a conventional baseball, bending, compressing or otherwise deforming the fin againstsurface82 of the ball.Fin81 can be formed of various materials, however porous materials such as fabric, foam or screening are particularly effective. In tests conducted, a synthetic screening material proved to be particularly efficacious in increasing the curving action of the ball.
• Preferably,fin81 is made integral withbody member80 and extends outwardly fromsurface82 sufficiently that the opposed face wall surfaces81aand81bare positioned substantially in the air stream formed upon throwing the ball. Wall surfaces81a,81bare generally parallel to each other however, if desired, a slight taper can be provided, either positive or negative, i.e., the thickness of the wall decreases or increases respectively as one goes fromsurface82 to the free distal end of the fin. Further, the fin could be formed with a roughened surface or with selected depressions. The average thickness of the fin can range generally from 0.01 to 0.125 inches, depending on the specific material employed. The height of the fin is selected to be generally between 0.25 and 0.50 inches. Whatever material and form thereof is selected, it should have the characteristic of quickly returning to its original configuration once released from a deformed condition as well as being durable and capable of withstanding the affects of being continuously struck by bats and of itself striking objects.
• Rotating a ball having afin81 positioned in the air stream will significantly increase the drag thereby enhance curvature in the path of the ball when it is thrown. As noted above, materials that are porous or foraminous in nature are particularly effective in increasing drag.
• It will be understood that the invention includes all modifications and equivalents of the described embodiments falling within the scope of the appended claims.

Claims (12)

1. An instructional ball for teaching the proper manner of throwing a curveball comprising:

a generally spherical body member,

a single recessed groove formed in the outer peripheral surface of the body member which follows a lined figure-8 path around the outer peripheral surface of the body member in the same manner as the stitching on a conventional baseball, the groove having a bottom portion and side walls,

an elongated fin member located in the center of the groove and extending up from the bottom portion of the groove out toward and beyond an imaginary continuation of the outer peripheral surface of the body member, the portion of the fin member extending beyond an imaginary continuation of said outer peripheral surface having opposed first and second generally parallel face surfaces, the fin member following the same path as the groove encompassing the figure-8 path, the fin member serving as an air dampening shield causing increased drag as the ball is thrown through the air with a rotating spin.

2-3. (canceled)

4. An instructional ball for teaching the proper manner of throwing a curveball comprising:

a generally spherical body member,

a single recessed V-shaped groove formed in the outer peripheral surface of the body member which follows a lined figure-8 path around the outer peripheral surface of the body member in the same manner as the stitching on a conventional baseball, the groove having a bottom portion and side walls, a plurality of members having a generally V-shaped cross section, the members having base walls which are configured to be closely received in the groove with the base walls of the members mating with the side walls of the groove and

an elongated fin member located in the center of the groove forming a center wall between the base walls of the V-shaped members, and extending up from the bottom portion of the groove out toward an imaginary continuation of the outer peripheral surface of the body member, the fin member following the same path as the groove encompassing the figure-8 path, the fin member serving as an air dampening shield causing increased drag as the ball is thrown through the air with a rotating spin.

5. An instructional ball as set forth inclaim 4 in which a plurality of generally parallel extending center walls are formed between the base walls forming elongated fin members.

6. An instructional ball as set forth inclaim 4 in which a plurality of generally parallel extending center walls are formed between the base walls forming elongated fin members.

7. An instructional ball set forth inclaim 1 further comprising an array of vent members supporting and connecting the fin member to the side edges of the recessed groove, the vent members including cross braces located perpendicular to the fin member and spaced evenly around the ball in a figure-8 path wherein the cross braces provide a continuation of the outer peripheral surface of the body member where a pitcher may place his fingers as he grips the ball.

8. An instructional ball as set forth inclaim 1 in which the recessed groove is V-shaped and the fin member is formed integrally with the body member and further comprising a plurality of vent members, each vent member having an elongated curved wall formed with first and second sides, each side having an edge formed at an angle complimentary to the side walls of the V-shaped groove, the elongated curved wall fitting into the recessed groove to form a continuation of the spherical surface of the body member over the groove, a plurality of slots formed in the elongated curved wall, the slots defining cross braces extending perpendicular to the fin member.

9. An instructional ball as set forth inclaim 8 in which the vent members encompass a raised continuous stitch pattern extending beyond the outer peripheral surface of the body member forming a figure-8 type path.

10. An instructional ball as set forth inclaim 8 in which the vent members have base walls complimentary to the side walls of the V-shaped groove and a center wall is formed between the base walls to serve as part of the fin member.

11. An instructional ball as set forth inclaim 1 wherein the size and weight of the instructional ball are similar to that of a conventional baseball.

12. An instructional ball as set forth inclaim 1 wherein the size and weight of the instructional ball are similar to that of a conventional softball.

13. An instructional ball for teaching the proper manner of throwing a curveball comprising:

a generally spherical body member,

a single recessed groove formed in the outer peripheral surface of the body member which follows a lined figure-8 path around the outer peripheral surface of the body member in the same manner as the stitching on a conventional baseball, the groove having bottom portion and side walls,

an elongated fin member located in the center of the groove and extending up from the bottom portion of the groove out toward an imaginary continuation of the outer peripheral surface of the body member, the fin member following the same path as the groove encompassing the figure-8 path, the fin member serving as an air dampening shield causing increased drag as the ball is thrown through the air with a rotating spin, and

an array of cross braces which support and connect the fin member to the side walls of the recessed groove, the cross braces being perpendicular to the fin member and spaced evenly along the recessed groove.

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