US3594925A - Amusement device - Google Patents
Amusement device Download PDFInfo
- Publication number
- US3594925A US3594925A US788437A US3594925DA US3594925A US 3594925 A US3594925 A US 3594925A US 788437 A US788437 A US 788437A US 3594925D A US3594925D A US 3594925DA US 3594925 A US3594925 A US 3594925A
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- US
- United States
- Prior art keywords
- ball
- side members
- upstanding side
- amusement device
- members
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- 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.)
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H33/00—Other toys
Definitions
- An amusement device comprising a generally parallelepiped-shaped ,frame member in which a plurality of spherical mass retaining yokes are freely suspended.
- the frame member includes a pair of sideplates detachably connected by a plurality of elongated braces, and the mass-retaining'members are detachably mounted in the frame member, whereby the entire device may be assembled in a relatively compact package for carrying or storing.
- the present invention relates to an improved amusement device which is relaxing, and is educational in illustrating Newton's Third Law of Motionthat every action is accompanied by an equal and opposite reaction.
- the amusement device of the present invention comprises an upstanding frame member having a plurality of mass-retaining members swingably mounted therein.
- Each of the mass-retaining members freely suspends a generally spherical mass at the lower end thereof which is adapted to swing and contact the masses held by the other retaining members.
- FIG. I is an exploded perspective view of the amusement device of the present invention assembled in a compact package for carrying or storing;
- FIG. 2 is an exploded perspective view of the amusement device assembled for operation
- FIG. 3 is a perspective view of one of the sideplates of the amusement device
- FIG. 4 is a vertical sectional view of one of the ball-retaining rings of the amusement device
- FIG. 5 is a perspective view of the end of one of the braces which holds the frame of the amusement device together; 7
- FIG. 6 is a perspective view of the amusement device assembled for use
- FIG. 7 is an elevation view of one of the corners of the side plate of the amusement device.
- FIG. 8 is an elevation view of one of the corners of the side plate receiving the end of one of the braces.
- the amusement device l of the present invention comprises a generally parallelpiped-shaped frame member 12 which swingably supports a plurality ofhallretaining yokes 14, 14, I4 carrying balls 16, I6, 16 at their lower ends.
- the frame member 12 comprises a pair of sideplates I8, I8 facing one another and detachably connected by upper and lower braces 20, 20 and 22, 22, respectively.
- An adhesive pad 24 may be provided on the bottom edge of each sideplate to prevent the frame from sliding on and marring the table surface on which the device rests when in use.
- Each ball-retaining yoke 14 includes an upper support shaft 26, a ball-retaining ring 28 and a pair of suspension arms 30. 30 connected between the shaft and the ring.
- the ball 16 is preferably snap fit in its retaining ring 28 but may, of course, be otherwise suitably mounted therein.
- Each sideplate 18 includes a series of shaft-receiving sockets 32, 32, 32 adjacent its upper edge for receiving the ends of the ball-retaining member support shafts 26, 26. 26.
- Each sideplate further includes sockets 34 in each of its four corners thereof for receiving the ends of the connecting braces 20, 20 and 22, 22.
- the balls 16 are preferably made of steel, and the ballretaining yokes 14 are preferably a bendable plastic material.
- the frame, including the sideplate I8 and the braces 20, 22 may also be made of plastic.
- each of the braces 20, 22 is preferably !-shaped in cross section with one of the legs 36 of the "1 intersecting the other leg 38 at a point spaced from the center point of that leg. As shown in FIG. 8, when the end of the brace 20 is inserted in one of sockets 34, that socket and the end of the brace will deform slightly to form a more secure connection.
- one of the end balls 16 is lifted outwardly, as shown in phantom lines, and allowed to drop and contact the other balls.
- the other end ball 16 will first be forced outwardly and then drop back and contact the other two balls to force the first end ball outwardly again, and so on.
- the device may, of course, be used in a variety of ways, such as by lifting both end balls at the same time and dropping them against the center ball.
- the device has been found to provide a tranquilizing, relaxing and soothing diversion for adults, and is educational for children as illustrating Newtons Third Law of Motion. Of course, more than three ball yokes and balls may be provided, ifdesired.
- the amusement device 10 may be quickly and easily disassembled and reassembled into a relatively small, compact package for carrying or storing. Disassembly is accomplished by simply removing the four braces 20, 20, 22, 22 from the sockets 34 in the sideplates l8, whereupon the ends of the support shafts 20 of the ball-retaining members 14 will drop out of their sockets.
- One of the sideplates 18 may then be laid on a surface with the inner surface facing upwardly, and the ball-retaining members 14 may be laid on top of it with each ball fitting in one of the cutout holes 40, 40, 40 provided in each sideplate.
- braces are then laid sideways across the ball-retaining members, and the other sideplate is placed on top of the package so that the pins 42, 42 and pin-receiving sockets 44, 44 provided on the inner surface of each sideplate register or align with one another.
- the adhesive pads 24 may be placed along the juncture of the sideplate edges to further maintain the plates in the compact carrying package.
- An improved collision ball type of amusement device which may be packaged as a compact unit, and which may be readily assembled, disassembled and reassembled; said improved amusement device comprising:
- each of said upstanding side members having an upper end; each of said upstanding members including means for engaging connecting means;
- connecting means extending between and detachably connecting said pair of upstanding side members in spaced relation to one another;
- each of said ball-retaining members including a supporting shaft detachably mounted between said upstanding side members adjacent said upper ends of said side members; each of said ball-retaining members further comprising ball-suspending means connected to said supporting shaft and extending downwardly therefrom; each of said ball-suspending means having a lower end adapted to hold a ball; and
- each of said upstanding side members comprises a substantially rectangular frame member provided with a plurality of spaced sockets adjacent its said upper end; said sockets being adapted to receive the ends of said supporting shafts of said ball retaining members.
- each of said upstanding side members comprises a substantially rectangular frame member having four corners; and wherein said means for engaging said connecting means comprises means defining a socket at each ofsaid corners; and wherein said connecting means comprises shaftlike connecting braces extending between and detachably connecting said upstanding side members; each of said connecting braces having opposite ends extending into said comer sockets of said upstanding side members.
- each of said upstanding side members comprises a substantially rectangular frame member having four corners; and wherein said means for engaging said connecting means comprises means defining a socket at each of said corners; and wherein said connecting means comprises shaftlike connecting braces extending between and detachably connecting said upstanding side members; each of said connecting braces having opposite ends extending into said corner sockets of said upstanding side members; wherein each of said corner sockets comprises a substantially circular, deformable socket; each of said connecting braces being generally r-shaped in cross section, with one leg of the 1" intersecting the other leg of the "I at a point spaced from the center of said other leg, whereby each of said brace-reeeiving sockets in said side plates will deform when the end of a con necting brace is inserted into said socket, thereby forming a secure connection.
- each of said upstanding side members comprises a substantially rectangular frame member having a web portion; and means defining a plurality of holes in said web portion for receiving and retaining the ends of said balls when said amusement device is disassembled and packaged into a compact unit.
- each of said balls comprises a spherical steel ball.
Abstract
An amusement device comprising a generally parallelepiped-shaped frame member in which a plurality of spherical mass retaining yokes are freely suspended. The frame member includes a pair of sideplates detachably connected by a plurality of elongated braces, and the mass-retaining members are detachably mounted in the frame member, whereby the entire device may be assembled in a relatively compact package for carrying or storing.
Description
United States Patent [1113,594,925
[72] lnventor Jean Pierre Abba! 3,266,175 8/1966 Palumbi 35/60 X Los Angeles County, Calif. 3,351,343 11/1967 Papp 273/58 X {f al- 1 2 3 FOREIGN PATENTS 1 e an. Patented y 27 1971 90,861 3/1897 Germany 46/130 [73] Assignee Brutoco Developement Co. OTHER REFERENCES Covina, Calif. Potomac Section of Washington Post, page 38 Hula Balls" Dec. 8, 1968 [54] AMUSEMENT DEVICE Knott Catalogue of Scientific Instruments Rec (1 Jan. 10, 1917, page 89 only, Class 35 library Leybold Physics Apparatus For Teaching Rec d July 19, 1966, page 30 only, Design Group Library Primary ExaminerHarland S. Skogquist Attorneys-John P. Scholl and Kendrick and Subkow ABSTRACT: An amusement device comprising a generally parallelepiped-shaped ,frame member in which a plurality of spherical mass retaining yokes are freely suspended. The frame member includes a pair of sideplates detachably connected by a plurality of elongated braces, and the mass-retaining'members are detachably mounted in the frame member, whereby the entire device may be assembled in a relatively compact package for carrying or storing.
PATENTEU 4112? an SHEU 1 BF '2 AMUSEMENT DEVICE FIELD OF THE INVENTION The present invention relates to an improved amusement device which is relaxing, and is educational in illustrating Newton's Third Law of Motionthat every action is accompanied by an equal and opposite reaction.
SUMMARY OF THE INVENTION Briefly, the amusement device of the present invention comprises an upstanding frame member having a plurality of mass-retaining members swingably mounted therein. Each of the mass-retaining members freely suspends a generally spherical mass at the lower end thereof which is adapted to swing and contact the masses held by the other retaining members.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is an exploded perspective view of the amusement device of the present invention assembled in a compact package for carrying or storing;
FIG. 2 is an exploded perspective view of the amusement device assembled for operation;
FIG. 3 is a perspective view of one of the sideplates of the amusement device;
FIG. 4 is a vertical sectional view of one of the ball-retaining rings of the amusement device;
FIG. 5 is a perspective view of the end of one of the braces which holds the frame of the amusement device together; 7
FIG. 6 is a perspective view of the amusement device assembled for use;
FIG. 7 is an elevation view of one of the corners of the side plate of the amusement device; and
FIG. 8 is an elevation view of one of the corners of the side plate receiving the end of one of the braces.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, the amusement device l of the present invention comprises a generally parallelpiped-shaped frame member 12 which swingably supports a plurality ofhallretaining yokes 14, 14, I4 carrying balls 16, I6, 16 at their lower ends.
The frame member 12 comprises a pair of sideplates I8, I8 facing one another and detachably connected by upper and lower braces 20, 20 and 22, 22, respectively. An adhesive pad 24 may be provided on the bottom edge of each sideplate to prevent the frame from sliding on and marring the table surface on which the device rests when in use.
Each ball-retaining yoke 14 includes an upper support shaft 26, a ball-retaining ring 28 and a pair of suspension arms 30. 30 connected between the shaft and the ring. The ball 16 is preferably snap fit in its retaining ring 28 but may, of course, be otherwise suitably mounted therein.
Each sideplate 18 includes a series of shaft-receiving sockets 32, 32, 32 adjacent its upper edge for receiving the ends of the ball-retaining member support shafts 26, 26. 26. Each sideplate further includes sockets 34 in each of its four corners thereof for receiving the ends of the connecting braces 20, 20 and 22, 22.
The balls 16 are preferably made of steel, and the ballretaining yokes 14 are preferably a bendable plastic material. The frame, including the sideplate I8 and the braces 20, 22 may also be made of plastic.
As best shown in FIGS. and 8, each of the braces 20, 22 is preferably !-shaped in cross section with one of the legs 36 of the "1 intersecting the other leg 38 at a point spaced from the center point of that leg. As shown in FIG. 8, when the end of the brace 20 is inserted in one of sockets 34, that socket and the end of the brace will deform slightly to form a more secure connection.
In use, with the amusement device assembled as shown in FIG. 6, one of the end balls 16 is lifted outwardly, as shown in phantom lines, and allowed to drop and contact the other balls. When contacted, the other end ball 16 will first be forced outwardly and then drop back and contact the other two balls to force the first end ball outwardly again, and so on. The device may, of course, be used in a variety of ways, such as by lifting both end balls at the same time and dropping them against the center ball. The device has been found to provide a tranquilizing, relaxing and soothing diversion for adults, and is educational for children as illustrating Newtons Third Law of Motion. Of course, more than three ball yokes and balls may be provided, ifdesired.
As best shown in FIG. 1, the amusement device 10 may be quickly and easily disassembled and reassembled into a relatively small, compact package for carrying or storing. Disassembly is accomplished by simply removing the four braces 20, 20, 22, 22 from the sockets 34 in the sideplates l8, whereupon the ends of the support shafts 20 of the ball-retaining members 14 will drop out of their sockets. One of the sideplates 18 may then be laid on a surface with the inner surface facing upwardly, and the ball-retaining members 14 may be laid on top of it with each ball fitting in one of the cutout holes 40, 40, 40 provided in each sideplate. The braces are then laid sideways across the ball-retaining members, and the other sideplate is placed on top of the package so that the pins 42, 42 and pin-receiving sockets 44, 44 provided on the inner surface of each sideplate register or align with one another. If desired, the adhesive pads 24 may be placed along the juncture of the sideplate edges to further maintain the plates in the compact carrying package.
What I claim is:
1. An improved collision ball type of amusement device which may be packaged as a compact unit, and which may be readily assembled, disassembled and reassembled; said improved amusement device comprising:
a pair of upstanding side members detachably connected to one another; each of said upstanding side members having an upper end; each of said upstanding members including means for engaging connecting means;
connecting means extending between and detachably connecting said pair of upstanding side members in spaced relation to one another;
a plurality of spaced ball-retaining members detachably and swingably mounted between said upstanding side members; each of said ball-retaining members including a supporting shaft detachably mounted between said upstanding side members adjacent said upper ends of said side members; each of said ball-retaining members further comprising ball-suspending means connected to said supporting shaft and extending downwardly therefrom; each of said ball-suspending means having a lower end adapted to hold a ball; and
a ball mounted in said lower end of each of said ballsuspending means.
2. An improved collision ball type of amusement device according to claim 1, wherein each of said upstanding side members comprises a substantially rectangular frame member provided with a plurality of spaced sockets adjacent its said upper end; said sockets being adapted to receive the ends of said supporting shafts of said ball retaining members.
3. An improved collision ball type of amusement device according to claim 1, wherein each of said upstanding side members comprises a substantially rectangular frame member having four corners; and wherein said means for engaging said connecting means comprises means defining a socket at each ofsaid corners; and wherein said connecting means comprises shaftlike connecting braces extending between and detachably connecting said upstanding side members; each of said connecting braces having opposite ends extending into said comer sockets of said upstanding side members.
4. An improved collision ball type of amusement device according to claim 1, wherein each of said upstanding side members comprises a substantially rectangular frame member having four corners; and wherein said means for engaging said connecting means comprises means defining a socket at each of said corners; and wherein said connecting means comprises shaftlike connecting braces extending between and detachably connecting said upstanding side members; each of said connecting braces having opposite ends extending into said corner sockets of said upstanding side members; wherein each of said corner sockets comprises a substantially circular, deformable socket; each of said connecting braces being generally r-shaped in cross section, with one leg of the 1" intersecting the other leg of the "I at a point spaced from the center of said other leg, whereby each of said brace-reeeiving sockets in said side plates will deform when the end of a con necting brace is inserted into said socket, thereby forming a secure connection.
5 An improved collision ball type of amusement device a cording to claim 1, wherein each of said upstanding side members comprises a substantially rectangular frame member having a web portion; and means defining a plurality of holes in said web portion for receiving and retaining the ends of said balls when said amusement device is disassembled and packaged into a compact unit.
6. An improved collision ball type of amusement device according to claim 1, wherein each of said balls comprises a spherical steel ball.
7. An improved collision ball type of amusement device according to claim I, wherein said upstanding side members, said connecting means and said hall-retaining members are all molded from a bendable plastic material.
Claims (7)
1. An improved collision ball type of amusement device which may be packaged as a compact unit, and which may be readily assembled, disassembled and reassembled; said improved amusement device comprising: a pair of upstanding side members detachably connected to one another; each of said upstanding side members having an upper end; each of said upstanding members including means for engaging connecting means; connecting means extending between and detachably connecting said pair of upstanding side members in spaced relation to one another; a plurality of spaced ball-retaining members detachably and swingably mounted between said upstanding side members; each of said ball-retaining members including a supporting shaft detachably mounted between said upstanding side members adjacent said upper ends of said side members; each of said ball-retaining members further comprising ball-suspending means connected to said supporting shaft and extending downwardly therefrom; each of said ball-suspending means having a lower end adapted to hold a ball; and a ball mounted in said lower end of each of said ball-suspending means.
2. An improved collision ball type of amusement device according to claim 1, wherein each of said upstanding side members coMprises a substantially rectangular frame member provided with a plurality of spaced sockets adjacent its said upper end; said sockets being adapted to receive the ends of said supporting shafts of said ball retaining members.
3. An improved collision ball type of amusement device according to claim 1, wherein each of said upstanding side members comprises a substantially rectangular frame member having four corners; and wherein said means for engaging said connecting means comprises means defining a socket at each of said corners; and wherein said connecting means comprises shaftlike connecting braces extending between and detachably connecting said upstanding side members; each of said connecting braces having opposite ends extending into said corner sockets of said upstanding side members.
4. An improved collision ball type of amusement device according to claim 1, wherein each of said upstanding side members comprises a substantially rectangular frame member having four corners; and wherein said means for engaging said connecting means comprises means defining a socket at each of said corners; and wherein said connecting means comprises shaftlike connecting braces extending between and detachably connecting said upstanding side members; each of said connecting braces having opposite ends extending into said corner sockets of said upstanding side members; wherein each of said corner sockets comprises a substantially circular, deformable socket; each of said connecting braces being generally t-shaped in cross section, with one leg of the ''''t'''' intersecting the other leg of the ''''t'''' at a point spaced from the center of said other leg, whereby each of said brace-receiving sockets in said side plates will deform when the end of a connecting brace is inserted into said socket, thereby forming a secure connection.
5. An improved collision ball type of amusement device according to claim 1, wherein each of said upstanding side members comprises a substantially rectangular frame member having a web portion; and means defining a plurality of holes in said web portion for receiving and retaining the ends of said balls when said amusement device is disassembled and packaged into a compact unit.
6. An improved collision ball type of amusement device according to claim 1, wherein each of said balls comprises a spherical steel ball.
7. An improved collision ball type of amusement device according to claim 1, wherein said upstanding side members, said connecting means and said ball-retaining members are all molded from a bendable plastic material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78843769A | 1969-01-02 | 1969-01-02 |
Publications (1)
Publication Number | Publication Date |
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US3594925A true US3594925A (en) | 1971-07-27 |
Family
ID=25144488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US788437A Expired - Lifetime US3594925A (en) | 1969-01-02 | 1969-01-02 | Amusement device |
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US (1) | US3594925A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3877699A (en) * | 1972-01-26 | 1975-04-15 | Lawrence L Reiner | Tethered ball poker game |
US4028818A (en) * | 1976-10-29 | 1977-06-14 | Warner H Burt | Tracked incline teaching apparatus |
US4060029A (en) * | 1975-06-24 | 1977-11-29 | Davy-Loewy Limited | Bounce-free object arresting system |
US5046984A (en) * | 1990-04-11 | 1991-09-10 | Cane David A | Bouncing ball launcher |
US5158462A (en) * | 1991-06-11 | 1992-10-27 | Hones Edward W | Multiple-collision acceleration demonstrator and toy |
US5895221A (en) * | 1997-08-29 | 1999-04-20 | Bison Investments Ltd. | Dual action double pendulum |
US6547567B1 (en) * | 2000-07-13 | 2003-04-15 | The University Of Arizona | Bouncing ball apparatus |
US8870687B2 (en) * | 2009-06-09 | 2014-10-28 | William Coleman Lay | Hitting device with resilient strap |
WO2016032747A1 (en) * | 2014-08-27 | 2016-03-03 | Mitchell Jr Robert | Ball collision demonstration device |
CN106448360A (en) * | 2016-09-23 | 2017-02-22 | 火星人视野(北京)教育科技有限公司 | Newton pendulum applied to teaching demonstration |
US20170368465A1 (en) * | 2016-06-23 | 2017-12-28 | Annette Brown | Modular toy assembly |
US10796603B2 (en) * | 2017-05-16 | 2020-10-06 | Wisys Technology Foundation, Inc. | Apparatus for demonstrating mechanical impedance |
US10926166B1 (en) * | 2019-10-22 | 2021-02-23 | Stern Pinball, Inc. | Rotatable ball momentum transfer assembly for an amusement game |
US10960316B2 (en) | 2019-04-12 | 2021-03-30 | Mechanical Design Labs, Inc. | Gyroscopic desk curios |
Citations (7)
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US831907A (en) * | 1906-01-13 | 1906-09-25 | Cort W Townsend | Toy. |
US1164686A (en) * | 1915-05-22 | 1915-12-21 | Francis A Wagner | Mechanical toy. |
US1252616A (en) * | 1917-03-02 | 1918-01-08 | Ellen W Reif | Toy. |
US2704667A (en) * | 1955-03-22 | Play apparatus | ||
US3266175A (en) * | 1964-02-14 | 1966-08-16 | Walter G Finch | Force measuring educational kit |
US3351343A (en) * | 1965-03-18 | 1967-11-07 | Stephen J Papp | Game ball and tethering means therefor |
-
1969
- 1969-01-02 US US788437A patent/US3594925A/en not_active Expired - Lifetime
Patent Citations (7)
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US2704667A (en) * | 1955-03-22 | Play apparatus | ||
US831907A (en) * | 1906-01-13 | 1906-09-25 | Cort W Townsend | Toy. |
US1164686A (en) * | 1915-05-22 | 1915-12-21 | Francis A Wagner | Mechanical toy. |
US1252616A (en) * | 1917-03-02 | 1918-01-08 | Ellen W Reif | Toy. |
US3266175A (en) * | 1964-02-14 | 1966-08-16 | Walter G Finch | Force measuring educational kit |
US3351343A (en) * | 1965-03-18 | 1967-11-07 | Stephen J Papp | Game ball and tethering means therefor |
Non-Patent Citations (3)
Title |
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Knott Catalogue of Scientific Instruments Rec d Jan. 10, 1917, page 89 only, Class 35 library * |
Leybold Physics Apparatus For Teaching Rec d July 19, 1966, page 30 only, Design Group Library * |
Potomac Section of Washington Post, page 38 Hula Balls Dec. 8, 1968 * |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3877699A (en) * | 1972-01-26 | 1975-04-15 | Lawrence L Reiner | Tethered ball poker game |
US4060029A (en) * | 1975-06-24 | 1977-11-29 | Davy-Loewy Limited | Bounce-free object arresting system |
US4028818A (en) * | 1976-10-29 | 1977-06-14 | Warner H Burt | Tracked incline teaching apparatus |
US5046984A (en) * | 1990-04-11 | 1991-09-10 | Cane David A | Bouncing ball launcher |
US5158462A (en) * | 1991-06-11 | 1992-10-27 | Hones Edward W | Multiple-collision acceleration demonstrator and toy |
US5895221A (en) * | 1997-08-29 | 1999-04-20 | Bison Investments Ltd. | Dual action double pendulum |
US6547567B1 (en) * | 2000-07-13 | 2003-04-15 | The University Of Arizona | Bouncing ball apparatus |
US8870687B2 (en) * | 2009-06-09 | 2014-10-28 | William Coleman Lay | Hitting device with resilient strap |
WO2016032747A1 (en) * | 2014-08-27 | 2016-03-03 | Mitchell Jr Robert | Ball collision demonstration device |
US9501952B2 (en) | 2014-08-27 | 2016-11-22 | Robert L. Mitchell, Jr. | Ball collision demonstration device |
US20170368465A1 (en) * | 2016-06-23 | 2017-12-28 | Annette Brown | Modular toy assembly |
CN106448360A (en) * | 2016-09-23 | 2017-02-22 | 火星人视野(北京)教育科技有限公司 | Newton pendulum applied to teaching demonstration |
US10796603B2 (en) * | 2017-05-16 | 2020-10-06 | Wisys Technology Foundation, Inc. | Apparatus for demonstrating mechanical impedance |
US10960316B2 (en) | 2019-04-12 | 2021-03-30 | Mechanical Design Labs, Inc. | Gyroscopic desk curios |
US10926166B1 (en) * | 2019-10-22 | 2021-02-23 | Stern Pinball, Inc. | Rotatable ball momentum transfer assembly for an amusement game |
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