US3623724A - Bat balancer - Google Patents

Bat balancer Download PDF

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US3623724A
US3623724A US9839A US3623724DA US3623724A US 3623724 A US3623724 A US 3623724A US 9839 A US9839 A US 9839A US 3623724D A US3623724D A US 3623724DA US 3623724 A US3623724 A US 3623724A
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Prior art keywords
bat
sleeve member
training device
balancer
center
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US9839A
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Leon A Lande
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/06—Handles
    • A63B60/14—Coverings specially adapted for handles, e.g. sleeves or ribbons
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
    • A63B59/50—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/02—Ballast means for adjusting the centre of mass
    • A63B60/04—Movable ballast means
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/52—Details or accessories of golf clubs, bats, rackets or the like with slits
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
    • A63B59/50—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball
    • A63B59/58—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball characterised by the shape
    • A63B2059/581—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball characterised by the shape with a continuously tapered barrel
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/18—Baseball, rounders or similar games
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/0002—Training appliances or apparatus for special sports for baseball
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A63B69/3623—Training appliances or apparatus for special sports for golf for driving
    • A63B69/3632—Clubs or attachments on clubs, e.g. for measuring, aligning
    • A63B69/3638—Normal golf clubs with directly attached weights

Definitions

  • This invention relates generally to the baseball bat art, and more particularly, to a bat balancer for a baseball bat for use in improving the batting ability of a batter.
  • the bat balancer comprises a frustoconically shaped sleeve member which is adapted to be slipped over the bat, from the knob end thereof, and to be seated on the barrel end of the bat at a point where an equal amount of weight is added above and below the balance point of the bat, so that the bat balance is similar to the balance of the bat before the bat balancer is added.
  • the bat balancer provides a balances bat so that there is less of a tendency to develop bad batting habits when swinging a warm-up bat.
  • FIG. 1 is a perspective view of a baseball bat provided with a bat balancer made in accordance with the principles of the present invention.
  • FIG. 2 is an enlarged perspective view of the bat balancer illustrated in FIG. 1.
  • FIG. 3 is an end elevational view of the large end of the bat balancer illustrated in FIG. 2, taken along the line 33 thereof, and looking in the direction of the arrows.
  • FIG. 4 is an end elevational view of the small end of the bat balancer illustrated in FIG. 2, taken along the line 4-4 thereof, and looking in the direction of the arrows.
  • FIG. 5 is an elevational view of the structure illustrated in FIG. 1, taken along the line 5-5 thereof, and looking in the direction of the arrows.
  • the numeral 10 designates a conventional baseball bat on which has been slidably mounted a bat balancer 11 made in accordance with the principles of the present invention.
  • the bat balancer I1 is a frustoconically shaped sleeve member which has a frustoconically shaped bore formed therethrough. Therefore, the center of gravity of the balancer 11 is located along the center axis thereof.
  • the numeral l3 designates the large end of the bat balancer 11.
  • FIGS. 1, 2 and 4 the numeral 14 designates the small end of the bat balancer.
  • the bat balancer 11 As shown in FIG. 1, the bat balancer 11, as shown, has an inner bore with a nonadjustable diameter along its length and is slid over the knob end, or smaller end of the bat 10, until it is frictionally seated in engagement with the bat 10 toward the barrel end thereof.
  • the numeral 12 in FIG. 1 designates the center of weight or balance point of the bat.
  • the bat balancer 11 is formed so that an equal amount of weight of the bat balancer is added to the bat 10 above and below the balance point 12.
  • the center of gravity of the balancer or sleeve member 11 is disposed at substantially the same location as the center of gravity of the bat 10 so that the bat 10 remains balanced around its center of gravity and the natural swing of the bat then will be substantially unchanged. That is, weight of the bat is thus increased but the bat balance is similar to the bat without the balancer 11.
  • the center of weight or balance point 12 of the bat 10 is usually about eleven or twelve inches from the barrel end of the bat.
  • the bat balancer 11 is made with a constant thickness wall throughout the entire length thereof. As shown in FIGS. 1, 2 and 4, the bat balancer 11 is provided with a pair of slits 15 which extend longitudinally of the balancer 11 from the small end 14 thereof. The slits 15 extend through the wall of the sleeve member which comprises the balancer ll. The length of the slits 15 is about one-third of the length of the balancer 11.
  • the small end 14 of the sleeve member of the balancer 11 is provided with slits 15 to permit the balancer 11 to be sufficiently flexible to be slid over the knob end of the bat, which normally is Z-lfiinches diameter. This knob size is the maximum size of the knob presently used on baseball bats.
  • the balancer 11 could function with one slit, but two or three slits are preferably. The illustrative embodiment shows the use of two slits in FIG. 4.
  • the bat balancer 11 may be constructed of a suitable flexible material, as for example, a suitable plastic or rubber which is sufficiently flexible to adjust readily to the varying diameters of a bat. The material used should not mark or scratch the wood to which it is attached.
  • the bat balancer 11 is slid over the bat toward the barrel end until it seats in position and is held in such position by a friction grip.
  • the larger end 13 of the balancer ll in one embodiment measured approximately 2%inch in outer diameter and graduated in outer diameter to about lhinch on the smaller end 14.
  • the wall of the balancer sleeve member was about iinch in thickness.
  • the thickness of the balancer sleeve member wall should be relatively uniform throughout the length thereof, but it could vary in some degree in thickness, so long as when the balancer 11 is mounted on the bat, an equal amount of weight is added and distributed above and below the balance point 12 on the bat 10.
  • the thickness of the balancer sleeve wall would vary in accordance with the flexibility of the material is used to make the balancer 11.
  • the bat balancer 11 functions to not only add weight to a hat, but that it also maintains the balance of a bat.
  • a batter normally swings a number of bats, or a heavier bat than the usual bat, before taking his batting turn at the plate in a baseball game.
  • the batter will have more of a change to maintain the same swing at all times.
  • a bat is made heavier, as caused by adding weight on the extreme barrel end of a bat, the tendency is to drop the barrel end of the bat as opposed to swinging the bat on a more level plane.
  • the bat balancer ll of the present invention is preferably made to a length of approximately 12 inches, and the amount of centrifugal force in swinging the bat is lessened to a much greater degree than when the weight is concentrated at a point near the barrel end of the bat.
  • the bat balancer 11 could be approximately two pounds in weight so that when the balancer 11 is added to a bat the bat will be similar in weight to that of two bats.
  • the regular bat By swinging a bat provided with a bat balancer l 1 for a short period of time, the regular bat will give the sensation of being lighter, that is, if a regular bat is swung immediately after swinging a heavier bat.
  • the bat balancer 11 can be used for the purpose of developing the batting muscles and the muscle control necessary for proper hitting. This can be accomplished by using a bat provided with a balancer 11 as an exerciser for a period of time during the off-baseball season, as well as during the baseball season.
  • a sleeve member having an inner bore through which a ball bat may be frictionally engaged and having a center of gravity located long the center axis thereof
  • said inner bore having a nonadjustable diameter along its length
  • said diameter being related to the increasing diameter of the bat so as to seat the sleeve member at a location along said bat whereby the center of gravity of the sleeve member is disposed at substantially the same location as the center of gravity of the bat so that the bat remains balanced around its center of gravity and the natural swing of the bat will be substantially unchanged.
  • said sleeve member is frustoconically shaped and has a frustoconically shaped bore formed therethrough.
  • said sleeve member is frustoconically shaped and has a constant wall thickness throughout its length.
  • said sleeve member is made from a flexible material and is held in place by a friction grip on the bat.
  • said sleeve member is made from a flexible material and is provided with at least one longitudinally extended slit which extends through the wall thereof, from the smaller end thereof and toward the larger end thereof.
  • said sleeve member is frustoconically shaped and is composed of a flexible material selected from the group consisting of rubber and plastic.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toys (AREA)

Abstract

A bat balancer comprising a frustoconically shaped weight sleeve member which is adapted to be slid onto a baseball bat from the knob end thereof. The bat balancer adds weight to a bat but maintains the balance of the bat by adding an equal amount of weight above and below the balance point of the bat.

Description

ilited States atent 72] Inventor Leon A. Lande 1054 Riverbank, Lincoln Park, Mich.
[21] Appl. No. 9,839
[22] Filed Feb. 9, 1970 [45] Patented Nov. 30, 1971 [54] BAT BALANCER 9 Claims, 5 Drawing Figs.
[52] US. Cl 273/26 B. 273/72 [51] 1nt.Cl A63d 15/10 [50] Field of Search 273/26 R.
67 DA, 67 DB, 72; 128/165. 156. 80. 8|
[56] References Cited UNITED STATES PATENTS 2,608,409 8/1952 Pinkerton 273/26 B 3.521.883 7/1970 Hamilton 273/26 B 250L565 3/1921 Halley. 128/165 Primary Examiner-Anton O Oeehsle Assistant 'Examiner- Theatrice Brown Attorney-Donnell Mentag and Harrington ABSTRACT: A bat balancer comprising a frustoconically shaped weight sleeve member which is adapted to be slid onto a baseball bat from the knob end thereof. The bat balancer adds weight to a bat but maintains the balance of the bat by adding an equal amount of weight above and below the balance point of the bat.
PAIENIED Novsmsn 1623724 1 INVENTOR.
[eon C2. Lana e AT TORNE Y5 BAT BALANCER SUMMARY OF THE INVENTION This invention relates generally to the baseball bat art, and more particularly, to a bat balancer for a baseball bat for use in improving the batting ability of a batter.
Heretofore various devices have been provided for adding weight to a baseball bat so that a batter could swing a bat with added weight for a short period of time so that the regular bat would seem to be lighter when it is swung immediately after swinging the heavier weighted bat. A disadvantage of some of the prior art weighted bat constructions is that a special bat is required, whereby the batter does not get the same feeling at the handle end of the bat when he changes from the weighted special bat to his regular bat. A further disadvantage of some of the weighted prior art baseball bats is that the weight is inserted into the barrel end of the bat, and when the barrel end of the bat is over-weighted, it is difficult to swing the bat on a level plane, and this action results in an unnatural swing. The weight added to the barrel end of the bat tends to pull the bat forward because of the greater centrifugal force which is generated when swinging such a bat. A further disadvantage of another type prior art weight addition to a regular bat, wherein a donut type weight is slidably mounted on the barrel end of a bat, is that it is subject to being accidentally discharged from the bat when the bat is swung. A further disadvantage of the last mentioned type of weight for a bat is that it is apt to be lost or misplaced. In view of the foregoing, it is an important object of the present invention to provide a novel and improved bat balancer, for adding weight and balance to a bat for practice purposes, which is adapted to overcome the aforementioned disadvantages of the prior art devices.
It is another object of the present invention to provide a novel and improved bat balancer for not only adding weight to a bat but also to maintain its balance. The bat balancer comprises a frustoconically shaped sleeve member which is adapted to be slipped over the bat, from the knob end thereof, and to be seated on the barrel end of the bat at a point where an equal amount of weight is added above and below the balance point of the bat, so that the bat balance is similar to the balance of the bat before the bat balancer is added.
It is a further object of the present invention to provide a novel and improved bat balancer which can be quickly and easily slipped onto a bat to provide a similar balance to the bat as when used in competition, whereby the batter will maintain the same type of swing during a warm-up session. The bat balancer provides a balances bat so that there is less of a tendency to develop bad batting habits when swinging a warm-up bat.
It is still a further object of the present invention to provide an improved bat balancer which is simple and compact in construction, economical to manufacture, and efficient in use.
Other objects, features and advantages of this invention will be apparent from the following detailed description, appended claims, and the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view of a baseball bat provided with a bat balancer made in accordance with the principles of the present invention.
FIG. 2 is an enlarged perspective view of the bat balancer illustrated in FIG. 1.
FIG. 3 is an end elevational view of the large end of the bat balancer illustrated in FIG. 2, taken along the line 33 thereof, and looking in the direction of the arrows.
FIG. 4 is an end elevational view of the small end of the bat balancer illustrated in FIG. 2, taken along the line 4-4 thereof, and looking in the direction of the arrows.
FIG. 5 is an elevational view of the structure illustrated in FIG. 1, taken along the line 5-5 thereof, and looking in the direction of the arrows.
DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENT Referring now to the drawing, and in particular, to FIG. 1, the numeral 10 designates a conventional baseball bat on which has been slidably mounted a bat balancer 11 made in accordance with the principles of the present invention. The bat balancer I1 is a frustoconically shaped sleeve member which has a frustoconically shaped bore formed therethrough. Therefore, the center of gravity of the balancer 11 is located along the center axis thereof. In FIGS. 1 through 3, the numeral l3 designates the large end of the bat balancer 11. In
FIGS. 1, 2 and 4, the numeral 14 designates the small end of the bat balancer.
As shown in FIG. 1, the bat balancer 11, as shown, has an inner bore with a nonadjustable diameter along its length and is slid over the knob end, or smaller end of the bat 10, until it is frictionally seated in engagement with the bat 10 toward the barrel end thereof. The numeral 12 in FIG. 1 designates the center of weight or balance point of the bat. The bat balancer 11 is formed so that an equal amount of weight of the bat balancer is added to the bat 10 above and below the balance point 12. In other words, the center of gravity of the balancer or sleeve member 11 is disposed at substantially the same location as the center of gravity of the bat 10 so that the bat 10 remains balanced around its center of gravity and the natural swing of the bat then will be substantially unchanged. That is, weight of the bat is thus increased but the bat balance is similar to the bat without the balancer 11. The center of weight or balance point 12 of the bat 10 is usually about eleven or twelve inches from the barrel end of the bat.
The bat balancer 11 is made with a constant thickness wall throughout the entire length thereof. As shown in FIGS. 1, 2 and 4, the bat balancer 11 is provided with a pair of slits 15 which extend longitudinally of the balancer 11 from the small end 14 thereof. The slits 15 extend through the wall of the sleeve member which comprises the balancer ll. The length of the slits 15 is about one-third of the length of the balancer 11. The small end 14 of the sleeve member of the balancer 11 is provided with slits 15 to permit the balancer 11 to be sufficiently flexible to be slid over the knob end of the bat, which normally is Z-lfiinches diameter. This knob size is the maximum size of the knob presently used on baseball bats. The balancer 11 could function with one slit, but two or three slits are preferably. The illustrative embodiment shows the use of two slits in FIG. 4.
The bat balancer 11 may be constructed of a suitable flexible material, as for example, a suitable plastic or rubber which is sufficiently flexible to adjust readily to the varying diameters of a bat. The material used should not mark or scratch the wood to which it is attached. The bat balancer 11 is slid over the bat toward the barrel end until it seats in position and is held in such position by a friction grip.
The larger end 13 of the balancer ll in one embodiment measured approximately 2%inch in outer diameter and graduated in outer diameter to about lhinch on the smaller end 14. The wall of the balancer sleeve member was about iinch in thickness. The thickness of the balancer sleeve member wall should be relatively uniform throughout the length thereof, but it could vary in some degree in thickness, so long as when the balancer 11 is mounted on the bat, an equal amount of weight is added and distributed above and below the balance point 12 on the bat 10. The thickness of the balancer sleeve wall would vary in accordance with the flexibility of the material is used to make the balancer 11.
It will be seen that the bat balancer 11 functions to not only add weight to a hat, but that it also maintains the balance of a bat. A batter normally swings a number of bats, or a heavier bat than the usual bat, before taking his batting turn at the plate in a baseball game. It will be seen that by swinging a regular bat which has a balance similar to the balance when hitting in the regular game, the batter will have more of a change to maintain the same swing at all times. When a bat is made heavier, as caused by adding weight on the extreme barrel end of a bat, the tendency is to drop the barrel end of the bat as opposed to swinging the bat on a more level plane. By swinging a balanced bat provided with a bat balancer 1 1 made in accordance with the principles of the present invention, there is less change to develop bad habits as when swinging an unbalanced bat.
The bat balancer ll of the present invention is preferably made to a length of approximately 12 inches, and the amount of centrifugal force in swinging the bat is lessened to a much greater degree than when the weight is concentrated at a point near the barrel end of the bat. The bat balancer 11 could be approximately two pounds in weight so that when the balancer 11 is added to a bat the bat will be similar in weight to that of two bats. By swinging a bat provided with a bat balancer l 1 for a short period of time, the regular bat will give the sensation of being lighter, that is, if a regular bat is swung immediately after swinging a heavier bat. The bat balancer 11 can be used for the purpose of developing the batting muscles and the muscle control necessary for proper hitting. This can be accomplished by using a bat provided with a balancer 11 as an exerciser for a period of time during the off-baseball season, as well as during the baseball season.
It has been found that there is less change of injury when using a bat balancer 11 as compared to the prior art devices because the material from which the bat balancer 11 is made is more flexible and also because of its construction. The bat balancer 11 has a large gripping surface and cannot fly of a bat when it is being swung. The bat balancer 11 is less apt to be lost or stolen because of its size. It is apt to be more durable since it is made of a single material as compared with the prior art devices which employ a combination of plastic and metal materials. It is a good exerciser for baseball players because a natural swing can be maintained during a batting exercise.
While it will be apparent that the preferred embodiment of the invention herein disclosed is well calculated to fulfill the objects above stated, it will be appreciated that the invention is susceptible to modification, variation and change.
I claim:
1. In a training device used in combination with a ball bat,
the improvement comprising:
a. a sleeve member having an inner bore through which a ball bat may be frictionally engaged and having a center of gravity located long the center axis thereof,
. said inner bore having a nonadjustable diameter along its length,
c. said diameter being related to the increasing diameter of the bat so as to seat the sleeve member at a location along said bat whereby the center of gravity of the sleeve member is disposed at substantially the same location as the center of gravity of the bat so that the bat remains balanced around its center of gravity and the natural swing of the bat will be substantially unchanged.
2. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped.
3. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and has a frustoconically shaped bore formed therethrough.
4. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and has a constant wall thickness throughout its length.
5. In a training device as defined in claim 1 wherein said sleeve member is made from a flexible material and is held in place by a friction grip on the bat.
6. In a training device as defined in claim 1 wherein said sleeve member is made from a flexible material and is provided with at least one longitudinally extended slit which extends through the wall thereof, from the smaller end thereof and toward the larger end thereof.
7. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and is composed of a flexible material selected from the group consisting of rubber and plastic.
8. In a training device as defined in claim 7 wherein said flexible material is composed of rubber.
9. In a training device as defined in claim 1 wherein said sleeve member is elongated and has a distributed weight equally divided on each side of the natural balance point of the unweighted bat.

Claims (9)

1. In a training device used in combination with a ball bat, the improvement comprising: a. a sleeve member having an inner bore through which a ball bat may be frictionally engaged and having a center of gravity located along the center axis thereof, b. said inner bore having a nonadjustable diameter along its length, c. said diameter being related to the increasing diameter of the bat so as to seat the sleeve member at a location along said bat whereby the center of gravity of the sleeve member is disposed at substantially the same location as the center of gravity of the bat so that the bat remains balanced around its center of gravity and the natural swing of the bat wilL be substantially unchanged.
2. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped.
3. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and has a frustoconically shaped bore formed therethrough.
4. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and has a constant wall thickness throughout its length.
5. In a training device as defined in claim 1 wherein said sleeve member is made from a flexible material and is held in place by a friction grip on the bat.
6. In a training device as defined in claim 1 wherein said sleeve member is made from a flexible material and is provided with at least one longitudinally extended slit which extends through the wall thereof, from the smaller end thereof and toward the larger end thereof.
7. In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and is composed of a flexible material selected from the group consisting of rubber and plastic.
8. In a training device as defined in claim 7 wherein said flexible material is composed of rubber.
9. In a training device as defined in claim 1 wherein said sleeve member is elongated and has a distributed weight equally divided on each side of the natural balance point of the unweighted bat.
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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833217A (en) * 1973-07-11 1974-09-03 D Greaney Practice sleeve
US4052059A (en) * 1975-05-30 1977-10-04 Rigsby Randle L Hockey stick with adjustable knob
US4336940A (en) * 1980-07-28 1982-06-29 Sprague Boyd F Golf tee holder
US5011145A (en) * 1987-09-04 1991-04-30 Bartkowicz Robert J Baseball bat with rotary grip
US5050877A (en) * 1988-10-27 1991-09-24 Alan Wales Warm-up weight for softball bat
US5131651A (en) * 1991-05-13 1992-07-21 You Chin San Ball bat
US5273278A (en) * 1990-02-02 1993-12-28 Roland Becker Sports implement with audio feedback
US5277421A (en) * 1993-04-23 1994-01-11 John Rewolinski Weighted practice bat
US5452889A (en) * 1994-02-04 1995-09-26 Tonka Corporation Ball striking device
US5605325A (en) * 1993-07-30 1997-02-25 Haringa; Kenneth R. Batting practice attachment for baseball bats
US5674138A (en) * 1996-01-03 1997-10-07 Paul V. Smith, Sr. Baseball bat and practice device combination
US5741193A (en) * 1996-01-03 1998-04-21 Paul V. Smith, Sr. Baseball bat and practice device combination
US5888154A (en) * 1998-04-24 1999-03-30 Hartman; Brian T. Resistance device for a baseball bat
US5980397A (en) * 1998-04-16 1999-11-09 Hart; David Welch Bat training weight
US6254498B1 (en) * 1996-12-11 2001-07-03 Matthew A. Tyner Instructional device with adjustable ball-striking sleeve
US6533685B1 (en) * 2000-06-13 2003-03-18 Gregg G. Otten Bat weight and protector
US6561930B2 (en) 2001-02-16 2003-05-13 Kenneth A. Mabry Training ball bat
US20030232668A1 (en) * 2002-10-01 2003-12-18 Liberatore Raymond A. Retention of weighting on athletic striker
US6681821B1 (en) * 2000-09-18 2004-01-27 Dominick Cirone Protective bat cover
US6739989B2 (en) 2002-05-29 2004-05-25 Raymond A Liberatore Weight holder attachable to athletic ball striker
US20040166949A1 (en) * 2003-02-24 2004-08-26 Smith Bret John Golf club rain ring
US20040206432A1 (en) * 2000-09-18 2004-10-21 Dominick Cirone Protective bat cover
US20060254938A1 (en) * 2005-05-16 2006-11-16 Ward John W Iii Baseball bat game storage package/container
US20070123371A1 (en) * 2002-10-01 2007-05-31 Liberatore Raymond A Retention of Weighting on an Athletic Striker
US20070232420A1 (en) * 2006-03-30 2007-10-04 Robert Esquerra Ball hitting training device
US20080234075A1 (en) * 2007-03-20 2008-09-25 Lancisi Paul F Training bat
US20110250994A1 (en) * 2010-04-08 2011-10-13 Budzielek David M Bunt training device
US20110275458A1 (en) * 2009-01-23 2011-11-10 Estrada Beisbol Llc Batting Skills Development Device
US8231484B1 (en) 2010-05-04 2012-07-31 Franklin Sports, Inc. Variable inertia bat weight
US8444500B2 (en) * 2011-05-26 2013-05-21 Philip Erkkinen Full swing weight training apparatus
US8608586B2 (en) 2011-09-01 2013-12-17 Richard E. Parente Golf putter
US8911309B1 (en) * 2011-08-17 2014-12-16 John Harihar Batting sleeve sensor systems
US8968119B2 (en) 2011-07-21 2015-03-03 Mattern Enterprises, LLC Weighted swing training apparatus
US20150111671A1 (en) * 2013-10-18 2015-04-23 Ramsey Blankenship Practice Swing Bat and Method
US20150238834A1 (en) * 2014-02-21 2015-08-27 Bruce W. Esper Batting Training Device and Method
US20150265892A1 (en) * 2015-06-10 2015-09-24 Yu-Huang Wang Hitting set that is applicable to bats
US20160051877A1 (en) * 2014-08-19 2016-02-25 AJS Marketing and Sales LLC Swing training system for use with a baseball bat
US20160121182A1 (en) * 2014-10-31 2016-05-05 Li-Hsiang Liu Baseball bat
USD759769S1 (en) * 2014-10-14 2016-06-21 Variance Technologies, Llc Weighted swing training apparatus
USD786989S1 (en) 2014-12-05 2017-05-16 Variance Technologies, Llc Weighted swing training apparatus
US9795850B1 (en) * 2016-08-01 2017-10-24 Gregory Sancier Ball striking training device
US10441861B1 (en) * 2017-06-06 2019-10-15 Erik Mattern Hittable protective bat covers
US20200188731A1 (en) * 2012-06-11 2020-06-18 Justin Niederman Wrist and forearm strengthening device
US11660512B2 (en) 2018-02-12 2023-05-30 Easton Diamond Sports, Llc Double-barrel ball bats
US11666814B1 (en) * 2019-11-14 2023-06-06 Matthew J. Bianco Hitting training tool for baseball or softball
US12005330B2 (en) 2020-02-27 2024-06-11 Easton Diamond Sports, Llc Double-barrel ball bats

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Cited By (56)

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US3833217A (en) * 1973-07-11 1974-09-03 D Greaney Practice sleeve
US4052059A (en) * 1975-05-30 1977-10-04 Rigsby Randle L Hockey stick with adjustable knob
US4336940A (en) * 1980-07-28 1982-06-29 Sprague Boyd F Golf tee holder
US5011145A (en) * 1987-09-04 1991-04-30 Bartkowicz Robert J Baseball bat with rotary grip
US5050877A (en) * 1988-10-27 1991-09-24 Alan Wales Warm-up weight for softball bat
US5273278A (en) * 1990-02-02 1993-12-28 Roland Becker Sports implement with audio feedback
US5131651A (en) * 1991-05-13 1992-07-21 You Chin San Ball bat
US5277421A (en) * 1993-04-23 1994-01-11 John Rewolinski Weighted practice bat
US6093114A (en) * 1993-07-30 2000-07-25 Tuff-Toe, Inc. Batting practice attachment for baseball bats
US5605325A (en) * 1993-07-30 1997-02-25 Haringa; Kenneth R. Batting practice attachment for baseball bats
US5695419A (en) * 1993-07-30 1997-12-09 Haringa; Kenneth R. Batting practice attachment for baseball bats
US5452889A (en) * 1994-02-04 1995-09-26 Tonka Corporation Ball striking device
US5741193A (en) * 1996-01-03 1998-04-21 Paul V. Smith, Sr. Baseball bat and practice device combination
US5674138A (en) * 1996-01-03 1997-10-07 Paul V. Smith, Sr. Baseball bat and practice device combination
US6254498B1 (en) * 1996-12-11 2001-07-03 Matthew A. Tyner Instructional device with adjustable ball-striking sleeve
US5980397A (en) * 1998-04-16 1999-11-09 Hart; David Welch Bat training weight
US5888154A (en) * 1998-04-24 1999-03-30 Hartman; Brian T. Resistance device for a baseball bat
US6533685B1 (en) * 2000-06-13 2003-03-18 Gregg G. Otten Bat weight and protector
US20060266453A1 (en) * 2000-09-18 2006-11-30 Dominick Cirone Protective bat cover
US6681821B1 (en) * 2000-09-18 2004-01-27 Dominick Cirone Protective bat cover
US20040081947A1 (en) * 2000-09-18 2004-04-29 Dominick Cirone Protective bat cover
US7171999B2 (en) 2000-09-18 2007-02-06 Dominick Cirone Protective bat cover
US20040206432A1 (en) * 2000-09-18 2004-10-21 Dominick Cirone Protective bat cover
US6561930B2 (en) 2001-02-16 2003-05-13 Kenneth A. Mabry Training ball bat
US6739989B2 (en) 2002-05-29 2004-05-25 Raymond A Liberatore Weight holder attachable to athletic ball striker
US20070123371A1 (en) * 2002-10-01 2007-05-31 Liberatore Raymond A Retention of Weighting on an Athletic Striker
US7540813B2 (en) 2002-10-01 2009-06-02 Liberatore Raymond A Retention of weighting on an athletic striker
US20030232668A1 (en) * 2002-10-01 2003-12-18 Liberatore Raymond A. Retention of weighting on athletic striker
US7344457B2 (en) 2002-10-01 2008-03-18 Liberatore Raymond A Retention of weighting on athletic striker
US20040166949A1 (en) * 2003-02-24 2004-08-26 Smith Bret John Golf club rain ring
US20060254938A1 (en) * 2005-05-16 2006-11-16 Ward John W Iii Baseball bat game storage package/container
US20070232420A1 (en) * 2006-03-30 2007-10-04 Robert Esquerra Ball hitting training device
US7670238B2 (en) * 2006-03-30 2010-03-02 Robert Esquerra Ball hitting training device
US20080234075A1 (en) * 2007-03-20 2008-09-25 Lancisi Paul F Training bat
US7625305B2 (en) * 2007-03-20 2009-12-01 Lancisi Paul F Training bat
US20110275458A1 (en) * 2009-01-23 2011-11-10 Estrada Beisbol Llc Batting Skills Development Device
US20110250994A1 (en) * 2010-04-08 2011-10-13 Budzielek David M Bunt training device
US8231484B1 (en) 2010-05-04 2012-07-31 Franklin Sports, Inc. Variable inertia bat weight
US8444500B2 (en) * 2011-05-26 2013-05-21 Philip Erkkinen Full swing weight training apparatus
US8968119B2 (en) 2011-07-21 2015-03-03 Mattern Enterprises, LLC Weighted swing training apparatus
US8911309B1 (en) * 2011-08-17 2014-12-16 John Harihar Batting sleeve sensor systems
US8608586B2 (en) 2011-09-01 2013-12-17 Richard E. Parente Golf putter
US20200188731A1 (en) * 2012-06-11 2020-06-18 Justin Niederman Wrist and forearm strengthening device
US11938374B2 (en) * 2012-06-11 2024-03-26 Justin Niederman Wrist and forearm strengthening device
US20150111671A1 (en) * 2013-10-18 2015-04-23 Ramsey Blankenship Practice Swing Bat and Method
US20150238834A1 (en) * 2014-02-21 2015-08-27 Bruce W. Esper Batting Training Device and Method
US20160051877A1 (en) * 2014-08-19 2016-02-25 AJS Marketing and Sales LLC Swing training system for use with a baseball bat
USD759769S1 (en) * 2014-10-14 2016-06-21 Variance Technologies, Llc Weighted swing training apparatus
US20160121182A1 (en) * 2014-10-31 2016-05-05 Li-Hsiang Liu Baseball bat
USD786989S1 (en) 2014-12-05 2017-05-16 Variance Technologies, Llc Weighted swing training apparatus
US20150265892A1 (en) * 2015-06-10 2015-09-24 Yu-Huang Wang Hitting set that is applicable to bats
US9795850B1 (en) * 2016-08-01 2017-10-24 Gregory Sancier Ball striking training device
US10441861B1 (en) * 2017-06-06 2019-10-15 Erik Mattern Hittable protective bat covers
US11660512B2 (en) 2018-02-12 2023-05-30 Easton Diamond Sports, Llc Double-barrel ball bats
US11666814B1 (en) * 2019-11-14 2023-06-06 Matthew J. Bianco Hitting training tool for baseball or softball
US12005330B2 (en) 2020-02-27 2024-06-11 Easton Diamond Sports, Llc Double-barrel ball bats

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