US3726476A - Helical track system - Google Patents

Helical track system Download PDF

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Publication number
US3726476A
US3726476A US3726476DA US3726476A US 3726476 A US3726476 A US 3726476A US 3726476D A US3726476D A US 3726476DA US 3726476 A US3726476 A US 3726476A
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track
running surface
track section
flanges
means
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Expired - Lifetime
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I Porter
O Smith
G Soulakis
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Mattel Inc
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Mattel Inc
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63HTOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H18/00Highways or trackways for toys; Propulsion by special interaction between vehicle and track
    • A63H18/02Construction or arrangement of the trackway
    • A63H18/04Up-and-down-hill trackways

Abstract

A helical track accessory for a toy vehicle and track layout system including three easily assembled and disassembled track sections having integral tabs which are attaChed to alignment and support poles. The poles have spaced pairs of annular flanges for receiving the tabs. A deflector arm positioned at the upper end portion of the helical track provides a bearing force upon moving toy vehicles to insure the vehicle is retained on the helical track. The track and poles are simply constructed and of synthetic resin so as to be inexpensively manufactured.

Description

United States Patent 1191 Porter et al.

[451 Apr. 10, 1973 [54] HELICAL TRACK SYSTEM [75] Inventors: Irwin C. Porter, Quinter, Kans; Or-

bert S. Smith, Hawthorne; George Soulakis, Pasadena, both of Calif.

[73] Assignee: Mattel, Inc., Hawthorne, Calif.

[22] Filed: Jan. 18, 1971 21 App1.No.: 107,377

[52] U.S. Cl ..238/10 E, 46/1 K [51 Int. Cl. ..A63h 19/30 [58] Field of Search ..238/10 R, 10 E, 10 F;

[56] References Cited UNITED STATES PATENTS 11/1945 Hess ..46/43 12/1959 Payne 10/ 1963 Wiley, Jr.

3,394,489 7/1968 Martin ..46/43 3,531,119 9/1970 Bonanno ..104/60 2,634,128 4/1953 Reed ..46/43 Primary Examiner--Gerald M. Forlenza Assistant ExaminerRichard A. Bertsch Attorney-Seymour A. Scholnick 1 5 7 1 ABSTRACT A helical track accessory for a toy vehicle and track layout system including three easily assembled and disassembled track sections having integral tabs which are attached to alignment and support poles. The poles have spaced pairs of annular flanges for receiving the tabs. A deflector arm positioned at the upper end portion of the helical track provides a bearing force upon moving toy vehicles to insure the vehicle is retained on the helical track The track and poles are simply constructed and of synthetic resin so as to be inexpensively manufactured.

7 Claims, 6 Drawing Figures PATENTEUAPR 1 0197s 3, 726,476

sum 2 [1F 2 HELICAL TRACK SYSTEM BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toy vehicle track or roadway system and, more particularly, to a toy vehicle track or roadway system wherein the track sections are helically curved.

2. Description of the Prior Art Small toy vehicles have become extremely popular among young children. These vehicles are usually sold in sets which include extruded synthetic resin track sections which allow various track layouts to be constructed. A very popular form for toy vehicles are scaled automobiles having metal bodies and riding on freely rotatable wheels, as more clearly described in U.S. Pat. No. 3,510,981 to H. W. La Branche et al. The track sections are of brightly colored material having a running surface and two oppositely disposed guide flanges for guiding the toy vehicle along the running surface. The track sections also include depending flanges which provide a channel-shaped receptacle for receiving track section connectors to allow easy connection of abutting track sections. The track system is exemplified by U.S. Pat. No. 3,487,999 to A. W. B. Nash et al. More recently, a newer self-powered toy automobile of the same scale as the above-mentioned automobile has appeared. By self-powered, it is meant the vehicle has a small motor directly connected to the rear wheels and a small rechargeable battery for energizing the motor.

The combination of small toy vehicles with freely rotatable wheels, and especially self-powered vehicles, and adaptable track sections make for extremely exciting toy vehicle systems. Added to this are various accessories such as curves, loops, starting gates, finishing gates, speed indicators, lap counters, power boosters, etc., which may be added to a track layout. In order to increase the excitement and to offer greater versatility to imaginative children, endeavors have been made to provide additional accessories. To be successful, however, each element of a toy vehicle system must be simply constructed so as to be inexpensively manufactured to allow mass marketing at a reasonable cost.

SUMMARY OF THE INVENTION The present invention provides another exciting accessory which may be used with the above-mentioned toy vehicles and track sections and which fulfills the requirement of being suitable for mass marketing by providing a track system comprising at least one helically curved track section having a vehicle running surface and two oppositely disposed inner and outer guide flanges projecting from the running surface for guiding a vehicle along the running surface; flange means connected to an outer peripheral portion of the track section for attaching the track section to a support and alignment means; and means connected to the flange means for supporting and aligning the track section.

It is a general aim of the present invention to provide a track system having a helically curved track which is simply constructed and inexpensive to manufacture.

A corollary object of the present invention is to provide a track system having a helically curved track which is easily assembled and disassembled for com- ,vide a track system having a helically curved track which may be used in conjunction with other track system accessories to provide an exciting addition to a toy vehicle system.

Other objects and advantages of the invention will appear from the following description taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the present invention illustrated as part of a track system.

FIG. 2 is an enlarged perspective view of a modified portion of the embodiment illustrated in FIG. 1.

FIG. 3 is an enlarged elevational view partially sectioned of the embodiment shown in FIG. 1.

FIG. 4 is an enlarged plan view of a portion of the embodiment shown in FIG. 3 taken along line 44 of FIG. 3.

FIG. 5 is a plan view taken along line 5-5 of FIG. 3.

FIG. 6 is an elevational sectional view taken along line 6-6 of FIG. 5.

DESCRIPTION OF THE PREFERRED EMBODIMENTS While the present invention is susceptible of various modifications and alternative constructions, illustrative embodiments are shown in the drawings and will herein be described in detail. It should be understood, however, that it is not the intention to limit the invention to the particular forms disclosed; but, on the contrary, the invention is to cover all modifications, equivalents and alternative constructions falling within the spirit and scope of the invention as expressed in the appended claims.

Referring now to FIG. 1, there is illustrated a helical track system 10 connected to a track section 12 at one end and a track section 14 at its other end. It is to be understood that the track sections 12 and 14 connect the helical track system 10 to a track layout (not shown) which may include other accessory pieces in any of a great variety of layout formations. If non-motorized toy vehicles are used, they will be introduced to the helical track system from the track section 12 and move in a downward spiral fashion to the track section 14 by the force of gravity. If, however, a self-powered toy vehicle is used, it may be moved either upwardly or downwardly along the helical track section. Thus, the depiction of the arrows in FIGS. 1 and 3 to indicate the direction of travel of a vehicle is to indicate the usual direction taken by a vehicle but is not to be considered limiting since a self-powered vehicle can move in either direction.

In accordance with one of the important aspects of the present invention, provision is made for a helically curved track which is simply constructed and capable of inexpensive manufacture. In addition, the helically curved track is very easy to assemble and disassemble to enable compact packaging and to facilitate transportation and handling. The ease of assembly and disassembly allows even a small child to operate the track system. Referring now to FIGS. 1, 3, 5 and 6, there is illustrated in more detail the track system comprising a plurality of helically curved track sections 16, 18 and 20. Each track section includes a vehicle running surface such as the running surface 22 of the track section 16, the running surface 24 of the track section 18 and the running surface 26 of the track section 20. In addition, each track section is bounded by two oppositely disposed guide flanges extending in an oblique fashion upwardly from the running surface to provide retaining walls for guiding the toy vehicle moving over the running surface. More particularly, the track section 16 has an outer guide flange 28 and an inner guide flange 30, the track section 18 has an outer guide flange 32 and an inner guide flange 34, while the track section 20 has an outer guide flange 36 and an inner guide flange 38; it is to be noted that the outer guide flanges 28, 32 and 36 form the outer peripheral portion of the helically curved track sections. As more clearly shown in FIG. 6, the outer guide flange 28 is substantially longer than the inner guide flange 30 due to the centrifugal forces on the vehicle attempting to move the vehicle tangential to the running surface. Thistends to bring the vehicle into repeated contact with the outer guide flange which must prevent the vehicle from leaving the track system.

At each end of track section, two depending connector arms are provided forming a channel-shaped receptacle with a bottom surface to receive a track section connector to securely connect two adjoining helical track sections. For example, an end portion 40, FIGS. and 6, of the track section 18 has two depending connector arms 42 and 44 to receive about one-half of a track section connector 46. The other half of a track section connector is'received by'two connecting arms 48 and 50, FIG. 5, of the track section 16 having an end portion 52 which abuts the end portion 40. The track section connector 46 may be identical to that disclosed in the Nash et al. patent mentioned hereinabove. In a similar fashion, the other end portion 54, FIG. 3, of the track section 18 abuts and is connected to an end portion 56 of the track section 20. The second end portion 58 of the track section is connected to the track section 14, while the other end portion 60 of the track section 16 is connected to the track section 12.

In more detail, the end section 58 is shown in an ex- It is to be understood that while the preferred embodiment illustrates three helically curved track sections connected end to end, more track sections may be added to increase the vertical height and the number of spiral rotations traveled by a moving vehicle. It is also to be understood that the entire helically curved track portion may be constructed of one track section having a multiple number of spiral revolutions if desired. Thus, if the helically curved track sections are made of a substantially rigid material, then it would be preferable to provide several sections so as to allow disassembly for compact packaging. However, if the helically curved track section is made of a material sufficiently resilient, the track section may be made in one piece and then compressed to provide a compact packaging arrangement.

Referring now to FIGS. 1, 3 and 5, the helical track system includes a number of tabs about the outer periphery of the track sections. For example, tabs 80 and 82 are integral with the outer guide flange 28 of the track section 16 and extendgenerally perpendicular from the outer guide flange. In a similar fashion, tabs 84 and 86 are visible in FIG. 1 integral with the outer ploded view, FIG. 4, connected to the track section 14 by a track section connector 62. The helically curved track section 20 includes two depending connector arms 64 and 66 forming a channel-shaped receptacle to receive about half of the track section connector 62 while the other half of the track section connector is received by two depending arms 68 and 70 of the track section 14 which also forms a channel-shaped receptacle.

As an alternative to the use of a separate track section connector, such as the track section connector 62, FIG. 4, an integral track section connector may be formed at one of the end portions of each of the helically curved track sections, while the other end portion continues to have two depending connector arms. For example, referring to FIG. 2, an end portion 60a of a helically curved track section 16a includes an integral track section connector 72 which is received by a straight track section 12a. Thus, it is quite clear that either of the two alternatives shown can be used to provide the necessary connection between two adjoining track sections.

guide flange 32 of the track section 18; tabs 88 and 90 are integral with the outer guide flange 36 of the track section 20. It is noted that each of the helically curved track sections include four integral tabs spaced at 90 intervals about the track system.

Each of the tabs has a recess for attaching to a pole which in turn acts to support and align the helically curved track sections. For example, referring to FIG. 5,

the tab 80 has a recess 92 to receive a pole 94 in snug engagement. In a like manner, the four aligned tabs of the three helically curved track sections receive three other poles 96, 98 and 100. If the helically curved track sections 16, 18 and 20 are of a sufficiently ridged material to support themselves, then the poles act to align and support the track sections so as to prevent them from toppling. However, if the material of the helically curved track sections is not sufficient to support themselves, or if the track sections are flexible enough to be compressed even if to a small degree, then it is desirable for the poles to have flanges to engage the tabs and support the track section vertically as well as horizontally.

- As shown, each of the poles has a series of spaced flanges such as the pole 98 having flanges 102, 104, 106 and 108. It is noted that the flanges are spaced in a periodic manner along the length of the elongated pole and are positioned in pairs so that each pair may cooperate with a tab. The pole 98 has six pairs of flanges of which only the alternate pairs make contact with the track sections. For example, the pair of flanges 106 and 108 receive a tab 110 of the track section 18. The tab 110 isslanted so that a good friction fit is achieved between the flanges of the pole and the tab. Not only is a strong connection made so that better support is achieved, but when flexible enough material is used for the helically curved track sections, the

placement of a tab between a pair of flanges aligns the vertical height of the track sections. For example, if the tab 110 was placed between the flanges 102 and 104, the vertical height of the track section 18 between its end portions 40 and 54 would be increased by the distance between the pair of flanges 102, 104 and the pair of flanges 106, 108.

It is now readily apparent the helically curved track sections with the integral tabs and the poles with the integral flanges may be constructed of any suitable material such as a synthetic resin which may be inex- 'pensively molded into the structure illustrated. The track system also offers versatility in that an imaginative child can add or substract track sections easily and quickly to achieve whatever track layout is desired.

Referring now to FIGS. 1 and 2, the track system includes a deflector arm 120, FIG. 1, 120a, FIG. 2, mounted to the pole 98, FIG. 1, 98a, Fig 2, and disposed across the upper end portion of the track section 16, 16a. The deflector arm is spaced from the running surface of the track section by a distance approximately the height of a toy vehicle such as the toy vehicle 122. The deflector arm includes two oblique flanges 124 and 126 and a display surface 128. It is found that unless the track section 12 is firmly supported, there is a tendency for the center of the track section to be somewhat lower than the end portion 60a of the helically curved track section 16a.

Thus, a vehicle moving along the track section 12a will be moving along in an upward incline prior to entering the track section. In the case of a toy vehicle moving at a high rate of speed, especially for those that are self-powered, there is a tendency of the vehicle to leave the track section in a jumping fashion when the track on which it is moving changes from an upward incline to a horizontal or downwardly incline direction. If the vehicle is moving fast enough, there will be a tendency for it to jump over the outer guide flange 280, FIG. 2; the slanted flange 124 of the deflector arm prevents this by contacting the upper portion of the vehicle 122 forcing it downward toward the running surface of the track section. The slanted flange 126 performs the same function when the vehicle is moving in an opposite direction; that is, upwardly along the helical track section before moving downwardly along the track section 12, 12a.

In operation, the helically curved track sections are easily assembled end to end with the track section connectors. The support and alignment poles are then attached to the tabs of the track sections to achieve the desired height characteristic. The deflector arm is placed upon the pole adjacent the highest end portion of the helical track system. The system is then in a condition to be attached to a track layout if desired, or could function by itself allowing a toy vehicle to move upwardly or downwardly along the running surfaces.

We claim:

1. A track system for toy vehicles comprising:

at least one helically curved track section having a vehicle running surface and at least one guide flange projecting generally upwardly from substantially one edge of said running surface for guiding a vehicle along said running surface;

flange means connected to an outer peripheral portion of said track section for attaching said track section to a support and alignment means; and

means connected to said flange means for supporting and aligning said track section, said means comprises an elongated pole having spaced pairs of flanges adapted to engage said flange means connected to said track section.

2. A track system as claimed in claim 1, wherein: said space pairs of flanges are integral with said elongated pole; and

said flange means comprises a tab integral with the guide flange, said tab extending generally perpendicular from said guide flange and having an opening for receiving said pole so that said tab is disposed between a pair of said flanges.

3. A track system as claimed in claim 2, including a deflector arm connected to said pole and disposed across an upper end portion of said track section spaced from said running surface for biasing a moving vehicle toward said running surface.

4. A track system as claimed in claim 1, including a deflector arm connected to and disposed across an upper end portion of said track section spaced from said running surface.

5. A track system for toy vehicles comprising:

a plurality of helically curved track sections, each track section having a vehicle running surface and two oppositely disposed inner and outer guide flanges projecting from said running surface for guiding a vehicle along said running surface;

means for connecting said track sections one to another to form an extended helically curved track;

means connected to an outer peripheral portion of said track sections for attaching said track sections to a support and alignment means; and

means connected to said attaching means for supporting and aligning said track sections, said means comprises a plurality of elongated poles, each of said poles including spaced flanges for cooperating with said attaching means to support and align said track sections.

6. A track system as claimed in claim 5, wherein:

said attaching means comprises a plurality of tabs integral with the outer guide flange, said tabs extending generally perpendicular from said outer guide flange and each having a recess; and

said poles being received within the recesses of said tabs and said tabs being received between pairs of said pole flanges.

7. A track system as claimed in claim 5, including a deflector arm connected to a pole and spaced from said running surface for biasing vehicles toward said running surface.

* i I i l

Claims (7)

1. A track system for toy vehicles comprising: at least one helically curved track section having a vehicle running surface and at least one guide flange projecting generally upwardly from substantially one edge of said running surface for guiding a vehicle along said running surface; flange means connected to an outer peripheral portion of said track section for attaching said track section to a support and alignment means; and means connected to said flange means for supporting and aligning said track section, said means comprises an elongated pole having spaced pairs of flanges adapted to engage said flange means connected to said track section.
2. A track system as claimed in claim 1, wherein: said spaced pairs of flanges are integral with said elongated pole; and said flange means comprises a tab integral with the guide flange, said tab extending generally perpendicular from said guide flange and having an opening for receiving said pole so that said tab is disposed between a pair of said flanges.
3. A track system as claimed in claim 2, including a deflector arm connected to said pole and disposed across an upper end portion of said track section spaced from said running surface for biasing a moving vehicle toward said running surface.
4. A track system as claimed in claim 1, including a deflector arm connected to and disposed across an upper end portion of said track section spaced from said running surface.
5. A track system for toy vehicles comprising: a plurality of helically curved track sections, each track section having a vehicle running surface and two oppositely disposed inner and outer guide flanges projecting from said running surface for guiding a vehicle along said running surface; means for connecting said track sections one to another to form an extended helically curved track; means connected to an outer peripheral portion of said track sections for attaching said track sections to a support and alignment means; and means connected to said attaching means for supporting and aligning said track sections, said means comprises a plurality of elongated poles, each of said poles including spaced flanges for cooperating with said attaching means to support and align said track sections.
6. A track system as claimed in claim 5, wherein: said attaching means comprises a plurality of tabs integral with the outer guide flange, said tabs extending generally perpendicular from said outer guide flange and each having a recess; and said poles being received within the recesses of said tabs and saiD tabs being received between pairs of said pole flanges.
7. A track system as claimed in claim 5, including a deflector arm connected to a pole and spaced from said running surface for biasing vehicles toward said running surface.
US3726476D 1971-01-18 1971-01-18 Helical track system Expired - Lifetime US3726476A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171090A (en) * 1976-12-23 1979-10-16 Rolf Eisenburg Trackway for a trackborne toy
US4585166A (en) * 1984-10-25 1986-04-29 Mattel, Inc. Collapsible toy automobile race course
US4767053A (en) * 1987-09-04 1988-08-30 Mattel, Inc. Multifunction toy stunt set
US6170754B1 (en) 1998-02-10 2001-01-09 Mattel, Inc. Spiral ramp for toy vehicles
US20060273597A1 (en) * 2005-06-03 2006-12-07 Cleveland State University Wind harnessing system
US20080070474A1 (en) * 2006-09-20 2008-03-20 Michael Nuttall Toy vehicle track set
US20080279690A1 (en) * 2007-05-09 2008-11-13 Cleveland State University Wind harnessing system
US20090015017A1 (en) * 2007-07-10 2009-01-15 Cleveland State University Wind powered electricity generating system
US20090075558A1 (en) * 2007-09-14 2009-03-19 Mattel, Inc. Toy vehicle track set
US20110053456A1 (en) * 2007-09-14 2011-03-03 Ostendorff Eric C Toy vehicle track set
US20120088430A1 (en) * 2010-10-08 2012-04-12 Glickman Joel I Toy race track system
US8608527B2 (en) 2010-08-27 2013-12-17 Mattel, Inc. Wall mounted toy track set
US9345979B2 (en) 2012-09-12 2016-05-24 Mattel, Inc. Wall mounted toy track set
US9421473B2 (en) 2012-10-04 2016-08-23 Mattel, Inc. Wall mounted toy track set
US9452366B2 (en) 2012-04-27 2016-09-27 Mattel, Inc. Toy track set
US9457284B2 (en) 2012-05-21 2016-10-04 Mattel, Inc. Spiral toy track set

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US2388483A (en) * 1944-07-12 1945-11-06 George M Hess Mechanical toy
US2634128A (en) * 1950-11-01 1953-04-07 Lawrence E Reed Gravity actuated spiral track device
US2917864A (en) * 1957-10-21 1959-12-22 Janet C Payne Attachment for playpens
US3108810A (en) * 1962-07-19 1963-10-29 Jr Lee M Wiley Ball-race game apparatus
US3394489A (en) * 1966-01-25 1968-07-30 Lewis W. Martin Article roll game and track therefor
US3531119A (en) * 1969-02-26 1970-09-29 Topper Corp Racing toy having player controlled vehicle propelling means

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388483A (en) * 1944-07-12 1945-11-06 George M Hess Mechanical toy
US2634128A (en) * 1950-11-01 1953-04-07 Lawrence E Reed Gravity actuated spiral track device
US2917864A (en) * 1957-10-21 1959-12-22 Janet C Payne Attachment for playpens
US3108810A (en) * 1962-07-19 1963-10-29 Jr Lee M Wiley Ball-race game apparatus
US3394489A (en) * 1966-01-25 1968-07-30 Lewis W. Martin Article roll game and track therefor
US3531119A (en) * 1969-02-26 1970-09-29 Topper Corp Racing toy having player controlled vehicle propelling means

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171090A (en) * 1976-12-23 1979-10-16 Rolf Eisenburg Trackway for a trackborne toy
US4585166A (en) * 1984-10-25 1986-04-29 Mattel, Inc. Collapsible toy automobile race course
US4767053A (en) * 1987-09-04 1988-08-30 Mattel, Inc. Multifunction toy stunt set
US6170754B1 (en) 1998-02-10 2001-01-09 Mattel, Inc. Spiral ramp for toy vehicles
US7540706B2 (en) * 2005-06-03 2009-06-02 Cleveland State University Wind harnessing system
US20060273597A1 (en) * 2005-06-03 2006-12-07 Cleveland State University Wind harnessing system
EP1896724A2 (en) * 2005-06-03 2008-03-12 Cleveland State University Wind harnessing system
US20090191056A1 (en) * 2005-06-03 2009-07-30 Cleveland State University Wind harnessing system
EP1896724A4 (en) * 2005-06-03 2012-12-19 Univ State Cleveland Wind harnessing system
US8002516B2 (en) 2005-06-03 2011-08-23 Cleveland State University Wind harnessing system
US20100056015A1 (en) * 2006-09-20 2010-03-04 Mattel, Inc. Vehicle Track Set
US20080070474A1 (en) * 2006-09-20 2008-03-20 Michael Nuttall Toy vehicle track set
US7614931B2 (en) 2006-09-20 2009-11-10 Mattel, Inc. Toy vehicle track set
US8162716B2 (en) 2006-09-20 2012-04-24 Mattel, Inc. Vehicle track set
US7845904B2 (en) 2007-05-09 2010-12-07 Cleveland State University Wind harnessing system
US20080279690A1 (en) * 2007-05-09 2008-11-13 Cleveland State University Wind harnessing system
US7679209B2 (en) 2007-07-10 2010-03-16 Cleveland State University Wind powered electricity generating system
US20090015017A1 (en) * 2007-07-10 2009-01-15 Cleveland State University Wind powered electricity generating system
US20090075558A1 (en) * 2007-09-14 2009-03-19 Mattel, Inc. Toy vehicle track set
US7963821B2 (en) 2007-09-14 2011-06-21 Mattel, Inc. Toy vehicle track set
US8192246B2 (en) 2007-09-14 2012-06-05 Mattel, Inc. Toy vehicle track set
US20110053456A1 (en) * 2007-09-14 2011-03-03 Ostendorff Eric C Toy vehicle track set
US8608527B2 (en) 2010-08-27 2013-12-17 Mattel, Inc. Wall mounted toy track set
US8944882B2 (en) 2010-08-27 2015-02-03 Mattel, Inc. Wall mounted toy track set
US9956492B2 (en) 2010-08-27 2018-05-01 Mattel, Inc. Wall mounted toy track set
US20120088430A1 (en) * 2010-10-08 2012-04-12 Glickman Joel I Toy race track system
US8597069B2 (en) * 2010-10-08 2013-12-03 K'nex Limited Partnership Group Toy race track system
US9452366B2 (en) 2012-04-27 2016-09-27 Mattel, Inc. Toy track set
US9457284B2 (en) 2012-05-21 2016-10-04 Mattel, Inc. Spiral toy track set
US9345979B2 (en) 2012-09-12 2016-05-24 Mattel, Inc. Wall mounted toy track set
US9808729B2 (en) 2012-09-12 2017-11-07 Mattel, Inc. Wall mounted toy track set
US9421473B2 (en) 2012-10-04 2016-08-23 Mattel, Inc. Wall mounted toy track set

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