US3137504A - Practice swing bat - Google Patents
Practice swing bat Download PDFInfo
- Publication number
- US3137504A US3137504A US192117A US19211762A US3137504A US 3137504 A US3137504 A US 3137504A US 192117 A US192117 A US 192117A US 19211762 A US19211762 A US 19211762A US 3137504 A US3137504 A US 3137504A
- Authority
- US
- United States
- Prior art keywords
- bore
- bat
- ball
- practice swing
- movable element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B47/00—Devices for handling or treating balls, e.g. for holding or carrying balls
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0062—Monitoring athletic performances, e.g. for determining the work of a user on an exercise apparatus, the completed jogging or cycling distance
-
- 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
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0062—Monitoring athletic performances, e.g. for determining the work of a user on an exercise apparatus, the completed jogging or cycling distance
- A63B2024/0068—Comparison to target or threshold, previous performance or not real time comparison to other individuals
-
- 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
- A63B2209/00—Characteristics of used materials
- A63B2209/08—Characteristics of used materials magnetic
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/50—Force related parameters
- A63B2220/51—Force
-
- 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
Definitions
- V. C. ZORDAN ETAL PRACTICE SWING BAT Filed May 3, 1962 Fig-2 V INVENTOR5 - 40% T// k ATTORNEYS United States Patent 3,137,504 PRACTICE SWING BAT Victor C. Zordan, St) Andrews St., and Angelo L.
- This invention relates to an improvement in articles of this type which have been used to improve the swing of a user and has for its objects the perfection of swing to provide for the greatest desired effect.
- Another object of our invention is to provide a practice swing bat, or other striking implement, in which the accomplishment of a proper swing is accompanied by a noise and vibrant sensation to the swinger.
- a further object is to provide an article of the character described which may be mass produced from plastic, wood or other suitable material according to the invention by means of which the above and other objects may effectively be attained as will hereinafter appear.
- the invention comprises an elongated body, a longitudinal bore therein extending through a substantial portion of the body, and means at one end of said bore for releasably holding a movable element at said end until the body is swung through an arc with sufficient force to dislodge the movable element and cause same to travel the bore to its opposite end with resulting sound and sensible vibration.
- FIG. 1 represents, in side elevation, a ball bat including the bore and movable element (shown in two positions), said bore and element, with the means for releasably holding the latter, being shown in dotted lines.
- FIG. 2 represents an enlarged section taken on the line 2-2 of FIG. 1, looking in the direction of the arrows.
- FIG. 3 represents a transverse section, on an enlarged scale, taken on the line 33 of FIG. 1, looking in the direction of the arrows, and
- FIG. 4 represents a transverse section, on the scale of FIGS. 2 and 3, taken on the line 44 of FIG. 1, looking in the direction of the arrows.
- the elongated body is denoted by 1, having a handle portion 2 and the usual annular knob 3.
- the enlarged portion of the body 1 is denoted by 4 and same is provided with a longitudinal bore 5 extending throughout a substantial portion thereof.
- a movable element 6 Located within the bore 5 is a movable element 6,
- Said means 7 comprises a magnet having its ball engaging surface slightly concave, although the shape of said surface is not an important feature of the invention.
- the ball will arrive at location 13 causing a slight noise and vibration of the bat both of such magnitude as to be heard and sensed through the handle 2.
- the bat may vary in length from twenty four (24") inches to thirty six (36") inches, and the hollow bore may extend about one third the overall length of the bat, being located in the thicker end thereof.
- the magnet is designed to releasably hold a ball substantially twice the weight of the ball actually used so that a proper swing is required to furnish the force necessary to dislodge the ball and cause same to travel the bore to contact with its other end.
- An article of the character described comprising an elongated tapered body, a longitudinal interior bore therein, an element movable throughout the length of said bore and contained therein and means at one end of said bore and fixed therein for releasably holding said movable element thereagainst until same is dislodged therefrom by substantial arcuate movement of said elongated body, said means for releasably holding the movable element comprising a magnet fixed in one end of the bore, said magnet being of sufiicient strength to hold a movable element of greater weight than the single movable element.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Percussion Or Vibration Massage (AREA)
Description
June 16, 1964 Fig.1
V. C. ZORDAN ETAL PRACTICE SWING BAT Filed May 3, 1962 Fig-2 V INVENTOR5=- 40% T// k ATTORNEYS United States Patent 3,137,504 PRACTICE SWING BAT Victor C. Zordan, St) Andrews St., and Angelo L.
Menegus, 27 Mount Pleasant Terrace, both of Torriugtou, Conn.
Filed May 3, 1962, Ser. No. 192,117 1 Claim. (Cl. 273-26) This invention relates to an improvement in articles of this type which have been used to improve the swing of a user and has for its objects the perfection of swing to provide for the greatest desired effect.
Another object of our invention is to provide a practice swing bat, or other striking implement, in which the accomplishment of a proper swing is accompanied by a noise and vibrant sensation to the swinger.
A further object is to provide an article of the character described which may be mass produced from plastic, wood or other suitable material according to the invention by means of which the above and other objects may effectively be attained as will hereinafter appear.
Broadly, the invention comprises an elongated body, a longitudinal bore therein extending through a substantial portion of the body, and means at one end of said bore for releasably holding a movable element at said end until the body is swung through an arc with sufficient force to dislodge the movable element and cause same to travel the bore to its opposite end with resulting sound and sensible vibration.
A practical embodiment of the invention is illustrated in the accompanying drawing in which:
FIG. 1 represents, in side elevation, a ball bat including the bore and movable element (shown in two positions), said bore and element, with the means for releasably holding the latter, being shown in dotted lines.
FIG. 2 represents an enlarged section taken on the line 2-2 of FIG. 1, looking in the direction of the arrows.
FIG. 3 represents a transverse section, on an enlarged scale, taken on the line 33 of FIG. 1, looking in the direction of the arrows, and
FIG. 4 represents a transverse section, on the scale of FIGS. 2 and 3, taken on the line 44 of FIG. 1, looking in the direction of the arrows.
Referring to the drawings in which the parts have been given the same numerals in the several figures the elongated body is denoted by 1, having a handle portion 2 and the usual annular knob 3. The enlarged portion of the body 1 is denoted by 4 and same is provided with a longitudinal bore 5 extending throughout a substantial portion thereof.
Located within the bore 5 is a movable element 6,
herein shown as a ball of substantial weight composed of steel or other suitable material. This ball 6 is normally releasably held by and against the means 7 fixed in one end of bore 5, as shown in FIG. 1. Said means 7 comprises a magnet having its ball engaging surface slightly concave, although the shape of said surface is not an important feature of the invention.
When the bat is properly swung through an are by grasping handle 2 and swinging same, a satisfactory swing of proper arc and power will cause the ball 6 to become dislodged from magnet 7 and travel the length of bore 5 into contact with the end of the bore. This latter position is illustrated in FIG. 1, wherein the ball 5 is in the location denoted by B in said figure.
As previously indicated, the ball will arrive at location 13 causing a slight noise and vibration of the bat both of such magnitude as to be heard and sensed through the handle 2.
Experience has shown that the bat may vary in length from twenty four (24") inches to thirty six (36") inches, and the hollow bore may extend about one third the overall length of the bat, being located in the thicker end thereof.
The magnet is designed to releasably hold a ball substantially twice the weight of the ball actually used so that a proper swing is required to furnish the force necessary to dislodge the ball and cause same to travel the bore to contact with its other end.
Since it is evident that various changes may be made in the form, construction and arrangement of the several parts without departing from the spirit and scope of the invention. We do not intend to be limited to the specific embodiment herein shown and described except as set forth in the appended claim.
What we claim is:
An article of the character described comprising an elongated tapered body, a longitudinal interior bore therein, an element movable throughout the length of said bore and contained therein and means at one end of said bore and fixed therein for releasably holding said movable element thereagainst until same is dislodged therefrom by substantial arcuate movement of said elongated body, said means for releasably holding the movable element comprising a magnet fixed in one end of the bore, said magnet being of sufiicient strength to hold a movable element of greater weight than the single movable element.
References Cited in the file of this patent UNITED STATES PATENTS 514,420 Jacobus Feb. 6, 1894 2,135,648 Stumpt Nov. 8, 1938
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US192117A US3137504A (en) | 1962-05-03 | 1962-05-03 | Practice swing bat |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US192117A US3137504A (en) | 1962-05-03 | 1962-05-03 | Practice swing bat |
Publications (1)
Publication Number | Publication Date |
---|---|
US3137504A true US3137504A (en) | 1964-06-16 |
Family
ID=22708332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US192117A Expired - Lifetime US3137504A (en) | 1962-05-03 | 1962-05-03 | Practice swing bat |
Country Status (1)
Country | Link |
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US (1) | US3137504A (en) |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3578801A (en) * | 1968-12-30 | 1971-05-18 | Raymond Piazza | Practice baseball bat |
US4006900A (en) * | 1975-02-05 | 1977-02-08 | Divito Joseph A | Magnetic baseball, bat and glove |
US4671508A (en) * | 1986-02-06 | 1987-06-09 | Tetreault Albert G | Practice bat |
US4794905A (en) * | 1987-05-21 | 1989-01-03 | Woolard Joseph H | Magnetic hand held ball throwing implement |
US4898386A (en) * | 1989-02-10 | 1990-02-06 | Anderson Donald A | Training bat |
US5133551A (en) * | 1991-08-15 | 1992-07-28 | Mattel, Inc. | Sound producing game bat |
WO1993014827A1 (en) * | 1992-01-24 | 1993-08-05 | Mattel, Inc. | Improved sound producing game bat |
US5277421A (en) * | 1993-04-23 | 1994-01-11 | John Rewolinski | Weighted practice bat |
US5340102A (en) * | 1993-04-19 | 1994-08-23 | Adamson Kenneth P | Racket attachment whistle |
US5360209A (en) * | 1993-05-06 | 1994-11-01 | Mollica Robert D | Batting training device |
US5451047A (en) * | 1995-01-06 | 1995-09-19 | Liu; Chao-Jih | Sound-producing apparatus |
US5590875A (en) * | 1995-08-08 | 1997-01-07 | Young; Gary | Baseball bat |
US5634856A (en) * | 1996-04-17 | 1997-06-03 | Rainey; Ron T. | Sports swing training method and apparatus |
US6302813B1 (en) | 1998-10-01 | 2001-10-16 | Mark J. Sturgeon | Noise making novelty baseball bat |
US6500074B1 (en) * | 2000-06-26 | 2002-12-31 | Geoffrey Wayne Thacker | Golf club |
US20030220173A1 (en) * | 2002-05-23 | 2003-11-27 | Parker Ernest R. | Training device |
US20050026711A1 (en) * | 2002-10-31 | 2005-02-03 | Kunihiro Tamura | Golf club with which gravity rule is realized |
US20050153797A1 (en) * | 2004-01-12 | 2005-07-14 | Nutter Mark E. | Warm-up bat |
US20050192112A1 (en) * | 2004-02-27 | 2005-09-01 | Kim Jung K. | Golf swing assistance apparatus |
GB2415636A (en) * | 2004-06-29 | 2006-01-04 | David Munk | Bat or club with sound producing element |
US20060223656A1 (en) * | 2005-04-01 | 2006-10-05 | Libonati Michael R | Ball sports training aid |
US20080305895A1 (en) * | 2007-06-05 | 2008-12-11 | Richard Alva Gant | Training bat with visual feedback of proper swing |
US20090025534A1 (en) * | 2005-05-22 | 2009-01-29 | Peter Gropp | Device for practicing percussion instrument technique |
US20090286630A1 (en) * | 2008-05-14 | 2009-11-19 | Aguirre Javier R | Soccer training device |
US20100144469A1 (en) * | 2007-06-05 | 2010-06-10 | Richard Alva Gant | Training bat with visual feedback of proper swing |
US20100184526A1 (en) * | 2007-02-24 | 2010-07-22 | Jae Sub Park | Golf club using moving ball |
US20110081968A1 (en) * | 2009-10-07 | 2011-04-07 | Kenny Mar | Apparatus and Systems for Adding Effects to Video Game Play |
US20120157240A1 (en) * | 2010-12-17 | 2012-06-21 | Andrew Shane Morris | Swing Release Aid |
US20120252608A1 (en) * | 2011-03-31 | 2012-10-04 | AIBxC Onlus - Associazione Italiana Baseball giocato da Ciechi | Apparatus and method for the game of baseball for the blind |
US20120264550A1 (en) * | 2011-04-15 | 2012-10-18 | Ian Shwartzman | Tennis Stoke Practice Device |
US8814714B1 (en) * | 2014-03-20 | 2014-08-26 | Gabriel Hjertstedt | Swing training device |
US8834304B1 (en) | 2012-04-24 | 2014-09-16 | Brian R. Toronto | Bat swing quality indicator |
US20150005111A1 (en) * | 2013-06-26 | 2015-01-01 | Swingrite, Llc. | Bat swing training device |
US20150182771A1 (en) * | 2013-12-30 | 2015-07-02 | Francisco J. Sillik | Training Bat |
US9095739B2 (en) | 2013-12-30 | 2015-08-04 | Francisco J. Sillik | Training bat |
US20150335973A1 (en) * | 2013-12-30 | 2015-11-26 | Francisco J. Sillik | Sports or excersie training device for hand-swung implements |
US9486685B2 (en) | 2015-02-25 | 2016-11-08 | Jay Rambo | Apparatus for providing swing technique feedback |
USD784467S1 (en) | 2015-11-11 | 2017-04-18 | Matthew M. Hess | Baseball bat swing trainer |
US10755684B1 (en) | 2019-04-09 | 2020-08-25 | Gramercy Products, Inc. | Squeaker arrangement producing variable sounds |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US514420A (en) * | 1894-02-06 | Charles jacobtjs | ||
US2135648A (en) * | 1937-08-06 | 1938-11-08 | Lewis T Stumpf | Practice golf club |
-
1962
- 1962-05-03 US US192117A patent/US3137504A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US514420A (en) * | 1894-02-06 | Charles jacobtjs | ||
US2135648A (en) * | 1937-08-06 | 1938-11-08 | Lewis T Stumpf | Practice golf club |
Cited By (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3578801A (en) * | 1968-12-30 | 1971-05-18 | Raymond Piazza | Practice baseball bat |
US4006900A (en) * | 1975-02-05 | 1977-02-08 | Divito Joseph A | Magnetic baseball, bat and glove |
US4671508A (en) * | 1986-02-06 | 1987-06-09 | Tetreault Albert G | Practice bat |
US4794905A (en) * | 1987-05-21 | 1989-01-03 | Woolard Joseph H | Magnetic hand held ball throwing implement |
US4898386A (en) * | 1989-02-10 | 1990-02-06 | Anderson Donald A | Training bat |
US5133551A (en) * | 1991-08-15 | 1992-07-28 | Mattel, Inc. | Sound producing game bat |
WO1993014827A1 (en) * | 1992-01-24 | 1993-08-05 | Mattel, Inc. | Improved sound producing game bat |
US5340102A (en) * | 1993-04-19 | 1994-08-23 | Adamson Kenneth P | Racket attachment whistle |
US5277421A (en) * | 1993-04-23 | 1994-01-11 | John Rewolinski | Weighted practice bat |
US5360209A (en) * | 1993-05-06 | 1994-11-01 | Mollica Robert D | Batting training device |
US5451047A (en) * | 1995-01-06 | 1995-09-19 | Liu; Chao-Jih | Sound-producing apparatus |
US5590875A (en) * | 1995-08-08 | 1997-01-07 | Young; Gary | Baseball bat |
US5634856A (en) * | 1996-04-17 | 1997-06-03 | Rainey; Ron T. | Sports swing training method and apparatus |
US6302813B1 (en) | 1998-10-01 | 2001-10-16 | Mark J. Sturgeon | Noise making novelty baseball bat |
US6500074B1 (en) * | 2000-06-26 | 2002-12-31 | Geoffrey Wayne Thacker | Golf club |
US20030220173A1 (en) * | 2002-05-23 | 2003-11-27 | Parker Ernest R. | Training device |
US7008351B2 (en) * | 2002-05-23 | 2006-03-07 | Parker Ernest R | Training device |
US20050026711A1 (en) * | 2002-10-31 | 2005-02-03 | Kunihiro Tamura | Golf club with which gravity rule is realized |
US7144329B2 (en) * | 2002-10-31 | 2006-12-05 | Kunihiro Tamura | Golf club with which gravity rule is realized |
US20050153797A1 (en) * | 2004-01-12 | 2005-07-14 | Nutter Mark E. | Warm-up bat |
US7147580B2 (en) * | 2004-01-12 | 2006-12-12 | Nutter Sports, L.L.C. | Warm-up bat |
US20050192112A1 (en) * | 2004-02-27 | 2005-09-01 | Kim Jung K. | Golf swing assistance apparatus |
GB2415636A (en) * | 2004-06-29 | 2006-01-04 | David Munk | Bat or club with sound producing element |
US7297078B2 (en) * | 2005-04-01 | 2007-11-20 | Libonati Michael R | Ball sports training aid |
US20060223656A1 (en) * | 2005-04-01 | 2006-10-05 | Libonati Michael R | Ball sports training aid |
US7682267B2 (en) | 2005-04-01 | 2010-03-23 | Libonati Michael R | Ball sports training aid |
US20100105495A1 (en) * | 2005-04-01 | 2010-04-29 | Libonati Michael R | Golf training aid |
US20090025534A1 (en) * | 2005-05-22 | 2009-01-29 | Peter Gropp | Device for practicing percussion instrument technique |
US20100184526A1 (en) * | 2007-02-24 | 2010-07-22 | Jae Sub Park | Golf club using moving ball |
US20080305895A1 (en) * | 2007-06-05 | 2008-12-11 | Richard Alva Gant | Training bat with visual feedback of proper swing |
US7727090B2 (en) * | 2007-06-05 | 2010-06-01 | Richard Alva Gant | Training bat with visual feedback of proper swing |
US20100144469A1 (en) * | 2007-06-05 | 2010-06-10 | Richard Alva Gant | Training bat with visual feedback of proper swing |
US8137219B2 (en) * | 2007-06-05 | 2012-03-20 | Richard Alva Gant | Training bat with visual feedback of proper swing |
US20090286630A1 (en) * | 2008-05-14 | 2009-11-19 | Aguirre Javier R | Soccer training device |
US20110081968A1 (en) * | 2009-10-07 | 2011-04-07 | Kenny Mar | Apparatus and Systems for Adding Effects to Video Game Play |
US20120157240A1 (en) * | 2010-12-17 | 2012-06-21 | Andrew Shane Morris | Swing Release Aid |
US20120252608A1 (en) * | 2011-03-31 | 2012-10-04 | AIBxC Onlus - Associazione Italiana Baseball giocato da Ciechi | Apparatus and method for the game of baseball for the blind |
US8702541B2 (en) * | 2011-03-31 | 2014-04-22 | AIBxC Onlus—Associazione Italiana Baseball giocato da Ciechi | Apparatus and method for the game of baseball for the blind |
US20120264550A1 (en) * | 2011-04-15 | 2012-10-18 | Ian Shwartzman | Tennis Stoke Practice Device |
US10709952B2 (en) * | 2011-04-15 | 2020-07-14 | Ian Shwartzman | Tennis stroke practice device |
US8834304B1 (en) | 2012-04-24 | 2014-09-16 | Brian R. Toronto | Bat swing quality indicator |
US20150005111A1 (en) * | 2013-06-26 | 2015-01-01 | Swingrite, Llc. | Bat swing training device |
US9144726B2 (en) * | 2013-06-26 | 2015-09-29 | Swingrite, Llc. | Bat swing training device |
US9095739B2 (en) | 2013-12-30 | 2015-08-04 | Francisco J. Sillik | Training bat |
US20150182771A1 (en) * | 2013-12-30 | 2015-07-02 | Francisco J. Sillik | Training Bat |
US20150335973A1 (en) * | 2013-12-30 | 2015-11-26 | Francisco J. Sillik | Sports or excersie training device for hand-swung implements |
US9433812B2 (en) * | 2013-12-30 | 2016-09-06 | Francisco J. Sillik | Sports or exercise training device for hand-swung implements |
US8814714B1 (en) * | 2014-03-20 | 2014-08-26 | Gabriel Hjertstedt | Swing training device |
US9486685B2 (en) | 2015-02-25 | 2016-11-08 | Jay Rambo | Apparatus for providing swing technique feedback |
USD784467S1 (en) | 2015-11-11 | 2017-04-18 | Matthew M. Hess | Baseball bat swing trainer |
US10755684B1 (en) | 2019-04-09 | 2020-08-25 | Gramercy Products, Inc. | Squeaker arrangement producing variable sounds |
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