US3379454A - Ball supported device - Google Patents

Ball supported device Download PDF

Info

Publication number
US3379454A
US3379454A US532185A US53218566A US3379454A US 3379454 A US3379454 A US 3379454A US 532185 A US532185 A US 532185A US 53218566 A US53218566 A US 53218566A US 3379454 A US3379454 A US 3379454A
Authority
US
United States
Prior art keywords
ball
support
bearing
balls
annular member
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
Application number
US532185A
Inventor
Willis M Woodman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILLIS M WOODMAN
Original Assignee
Willis M. Woodman
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Willis M. Woodman filed Critical Willis M. Woodman
Priority to US532185A priority Critical patent/US3379454A/en
Application granted granted Critical
Publication of US3379454A publication Critical patent/US3379454A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00Castors in general; Anti-clogging castors
    • B60B33/08Ball castors

Definitions

  • This invention relates to a device which may be used in any connection, but herein is described as a vehicle, game, or toy.
  • the main characteristic of this device is that it has a support provided with a spherical ball generally centrally thereof at its lower surface, the ball engaging the ground or floor and the support traveling over the ground or floor as the ball rotates.
  • evice can be inverted and materials passed over it in contact with the ball.
  • the principal object of the invention resides in the provision of means as described which takes advantage of the properties of a rolling ball. For instance by merely tilting the support which is supported by the ball the angle of direction of the support will be varied.
  • the axis is universal. Thus if a person were standing on the support, e can merely lean to one side or the other causing the direction of motion of the device to abruptly change. At the same time he can deliberately push the device to move in any direction in a single plane.
  • Another object of the invention resides in the provision of a device as above described which can be used as a toy, as a cart, as means for moving materials, etc.
  • the invention contemplates the use of the device as a skateboard with either a single ball or possibly two balls in line with each other fore and aft.
  • the support mentioned above with a central main ball may have other smaller balls thereon so that when the device tilts to too great a degree it will not dig into the ground, etc., but will ride in tilted condition on a combination of the main central ball and one of the other balls which may be located at the corners of a rectangular support or they may be arranged in a substantial circle about the central ball on a circular or oval support.
  • Many other shapes and devices are also contemplated.
  • the invention furthermore contemplates the use of power which can be applied to the ball directly as for instance by friction means or the like; and also the use of brakes to be applied to any of the balls aids in the control of the device as to its directional characteristics, to vary its momentum, and also to bring the device to a stop when such is desired.
  • FIG. 1 is a view in side elevation illustrating the invention
  • FIG. 2 is a top plan view
  • FIG. 3 is a bottom plan view
  • FIG. 4 is a view partly in section of the central ball support, including a modification.
  • the construction of the present invention or at least the embodiment thereof illustrating the invention as shown in the accompanying drawings is relatively simple and comprises a platform or the like which has a cup 3,379,454 Patented Apr. 23, 1968 12 on the bottom of it, the cup opening downwardly and containing a relatively large ball 14.
  • This cup may be of any construction and may be a single bracket or an inverted cone.
  • the cup or cone is of a nature to extend just past the diameter of the balls so as to hold it from escaping but the ball is easily rotatable within its cup.
  • race 16 There is an annular upward support for the ball as indicated by bearing race 16.
  • the balls in race 16 engage the ball 14 which clearly will rotate freely and easily.
  • Race 16 is slightly smaller than the diameter of the ball, supports it upwardy and provides -a substantially permanent bearing.
  • a rim 18, slightly smaller than the diameter of the ball holds it from dropping out. This rim is annular and attached to the cup or cone 12 at its periphery as at 20, by any convenient means.
  • this invention contemplates the use of the invention with or without the power operated means for driving it, and it may be used simply as a foot powered scooter or the like.
  • the support 19 is oblong there may be two forward balls and a single rearward ball or two rearward balls. This will provide stability for the device.
  • the eccentrically mounted balls are smaller and do not project so far from the surface of support 10 as does the main ball '14, so that it will be seen that the purpose of the device is to have the platform or support 10 movable in any direction in a single plane on the main ball 14 rather than on the smaller ball-s which are for the purpose of control and to prevent the capsizing of support 10 in the case that the device is tilted to too great a degree.
  • a simple screw is sufiicient for this purpose, the screw having an offset handle 28 or the like for the purpose of turning it so that the friction cup 26 presses with more or less force on the ball, exerting a braking effect thereon, or a stem 30 can be moved govtinwardly directly, with a spring 32 to move the stern ac t.
  • the central main ball 14 may be provided with a brake or certain of balls only may be provided with brakes as may be found to be desired or convenient, depending upon the actual use to which the device is to be put. It is preferred to put brakes on the rear balls 24 only, and to use these brakes to steer the device.
  • This device may be in the form of a coaster wagon, skates, skateboard, or any other device or as a dolly for moving materials if this should be desired for transportation of goods of merchandise.
  • the support of the present invention is easy to start rolling and is easily controllable. For instance, when used as a skateboard or in any other way, a slight pressure off center on the support will cause the device to start or to move out of its straight forward line of advance and it will curve oil or even go directly laterally, even rearwardly, in circles, etc. or in any combination of the various motions, contrary to the action of rollers or coasters.
  • a device of the class described comprising a support, a ball, means holding the ball on the support, said ball forming means guiding the support during motion thereof relative to a supporting surface in any direction and providing for instantaneous changes of direction, the means holding the ball providing for free rolling action of the ball in any direction relative to the support, a bearing about the ball, the bearing being located in said ball holding means, the ball holding means forming an enclosure for a portion only of the ball, said bearing comprising an annular member extending about the ball closely adjacent but just above a diametrical position on the ball, bearing elements in the annular member, and a brake on the support adapted to engage the ball within the annular member.
  • the device of claim 1 including a plurality of rotary elements on the support spaced from the ball, said elements extending from the support a less distance than the ball, and a brake for certain of said rotary elements.
  • the device of claim 1 including a plurality of rotary elements on the support spaced from the ball, said elements extending from the support a less distance than the ball, and a brake for certain of said rotary elements, the latter being balls arranged at one side of the firstnamed ball.

Description

AM 23, was
w. M. WOODMAN 3,379,454
BALL SUPPORTED DEVICE Filed March 7, 1966 M'Zla's M Ma ma/7a WWW United States Patent 3,379,454 BALL SUPPORTED DEVICE Willis M. Woodman, 27 New Vista Lane, Worcester, Mass. 01605 Filed Mar. 7, 1966, Ser. No. 532,185 3 (Ilaims. (Cl. 28ti-87.04)
This invention relates to a device which may be used in any connection, but herein is described as a vehicle, game, or toy. The main characteristic of this device is that it has a support provided with a spherical ball generally centrally thereof at its lower surface, the ball engaging the ground or floor and the support traveling over the ground or floor as the ball rotates. Alternatively, the
evice can be inverted and materials passed over it in contact with the ball.
The principal object of the invention resides in the provision of means as described which takes advantage of the properties of a rolling ball. For instance by merely tilting the support which is supported by the ball the angle of direction of the support will be varied. The axis is universal. Thus if a person were standing on the support, e can merely lean to one side or the other causing the direction of motion of the device to abruptly change. At the same time he can deliberately push the device to move in any direction in a single plane. A combination of these forces will cause the device to have a very erratic path and some skill will be required for the operator of the device to cause it to follow a desired path which might be for instance straight ahead, to either side and any curve inbetWeen including a circular path or on a path for instance on an are intermediate its spiral. Also by a relatively simple alternate tilting action at either side of the ball, the device can be made to move in a sinuous path and in variations thereof.
Another object of the invention resides in the provision of a device as above described which can be used as a toy, as a cart, as means for moving materials, etc. The invention contemplates the use of the device as a skateboard with either a single ball or possibly two balls in line with each other fore and aft. Furthermore the support mentioned above with a central main ball may have other smaller balls thereon so that when the device tilts to too great a degree it will not dig into the ground, etc., but will ride in tilted condition on a combination of the main central ball and one of the other balls which may be located at the corners of a rectangular support or they may be arranged in a substantial circle about the central ball on a circular or oval support. Many other shapes and devices are also contemplated.
The invention furthermore contemplates the use of power which can be applied to the ball directly as for instance by friction means or the like; and also the use of brakes to be applied to any of the balls aids in the control of the device as to its directional characteristics, to vary its momentum, and also to bring the device to a stop when such is desired.
Other objects and advantages of the invention will appear hereinafter.
Reference is to be had to the accompanying drawings, in which:
FIG. 1 is a view in side elevation illustrating the invention;
FIG. 2 is a top plan view;
FIG. 3 is a bottom plan view; and
FIG. 4 is a view partly in section of the central ball support, including a modification.
The construction of the present invention or at least the embodiment thereof illustrating the invention as shown in the accompanying drawings is relatively simple and comprises a platform or the like which has a cup 3,379,454 Patented Apr. 23, 1968 12 on the bottom of it, the cup opening downwardly and containing a relatively large ball 14. This cup may be of any construction and may be a single bracket or an inverted cone. The cup or cone is of a nature to extend just past the diameter of the balls so as to hold it from escaping but the ball is easily rotatable within its cup.
There is an annular upward support for the ball as indicated by bearing race 16. The balls in race 16 engage the ball 14 which clearly will rotate freely and easily. Race 16 is slightly smaller than the diameter of the ball, supports it upwardy and provides -a substantially permanent bearing. A rim 18, slightly smaller than the diameter of the ball holds it from dropping out. This rim is annular and attached to the cup or cone 12 at its periphery as at 20, by any convenient means.
It is to be understood that this invention contemplates the use of the invention with or without the power operated means for driving it, and it may be used simply as a foot powered scooter or the like.
Eccentrically mounted with respect to the center of the device there may be other balls such as at 22 and 24. For instance if the support 19 is oblong there may be two forward balls and a single rearward ball or two rearward balls. This will provide stability for the device. The eccentrically mounted balls are smaller and do not project so far from the surface of support 10 as does the main ball '14, so that it will be seen that the purpose of the device is to have the platform or support 10 movable in any direction in a single plane on the main ball 14 rather than on the smaller ball-s which are for the purpose of control and to prevent the capsizing of support 10 in the case that the device is tilted to too great a degree.
It is a simple matter to apply brakes to any or all of these balls as indicated at 26 where a friction cup or shoe is movable by means of any kind of brake actuating mechanism as may be desired. A simple screw is sufiicient for this purpose, the screw having an offset handle 28 or the like for the purpose of turning it so that the friction cup 26 presses with more or less force on the ball, exerting a braking effect thereon, or a stem 30 can be moved govtinwardly directly, with a spring 32 to move the stern ac t.
The central main ball 14 may be provided with a brake or certain of balls only may be provided with brakes as may be found to be desired or convenient, depending upon the actual use to which the device is to be put. It is preferred to put brakes on the rear balls 24 only, and to use these brakes to steer the device.
Various seats, grab rails, etc. as indicated at 34 may be mounted on the platform or support 10. This device may be in the form of a coaster wagon, skates, skateboard, or any other device or as a dolly for moving materials if this should be desired for transportation of goods of merchandise.
It is well understood that if lateral pressure is applied to a ball it will roll. If pressure is applied to a ball on a fiat surface exactly at ninety degrees along a vertical axis or diameter of a ball, the ball will not move; but if pressure is shifted even very slightly to one side or the other from a normal position, the ball will immediately take ofi and roll in the opposite direction. Thus it will be seen that the support of the present invention is easy to start rolling and is easily controllable. For instance, when used as a skateboard or in any other way, a slight pressure off center on the support will cause the device to start or to move out of its straight forward line of advance and it will curve oil or even go directly laterally, even rearwardly, in circles, etc. or in any combination of the various motions, contrary to the action of rollers or coasters.
On the other hand, if the support it) is in progress, a slight touch on a brake will have a steering effect because a braked rear ball for instance will cause the device to swing about the ball being braked.
It will be seen that the curves or lines of advance of this device are infinite, depending upon the degree of tilt, the degree of application of braking, etc., and furthermore the uses of the device are very extensive extending from the use of it as a toy to the use of it as a commercial vehicle, wagon, cart, etc.
Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:
1. A device of the class described comprising a support, a ball, means holding the ball on the support, said ball forming means guiding the support during motion thereof relative to a supporting surface in any direction and providing for instantaneous changes of direction, the means holding the ball providing for free rolling action of the ball in any direction relative to the support, a bearing about the ball, the bearing being located in said ball holding means, the ball holding means forming an enclosure for a portion only of the ball, said bearing comprising an annular member extending about the ball closely adjacent but just above a diametrical position on the ball, bearing elements in the annular member, and a brake on the support adapted to engage the ball within the annular member.
2. The device of claim 1 including a plurality of rotary elements on the support spaced from the ball, said elements extending from the support a less distance than the ball, and a brake for certain of said rotary elements.
3. The device of claim 1 including a plurality of rotary elements on the support spaced from the ball, said elements extending from the support a less distance than the ball, and a brake for certain of said rotary elements, the latter being balls arranged at one side of the firstnamed ball.
References Cited UNITED STATES PATENTS 1,517,352 12/1924 Foote 280-11.2 2,351,293 6/1944 Saunders 280-8704 2,830,824 4/1958 Young 28079.1 3,252,713 5/1966 Heller 28087.04 3,310,320 3/1967 Hanna et al. 280-8704 1,811,532 6/1931 Benetatos 280-11.1 2,994,545 8/1961 Gass 280-8704 FOREIGN PATENTS 1,215,053 11/1959 France.
494,395 3/1930 German LEO FRIAGLIA, Primary Examiner.

Claims (1)

1. A DEVICE OF THE CLASS DESCRIBED COMPRISING A SUPPORT, A BALL, MEANS HOLDING THE BALL ON THE SUPPORT, SAID BALL FORMING MEANS GUIDING THE SUPPORT DURING MOTION THEREOF RELATIVE TO A SUPPORTING SURFACE IN ANY DIRECTION AND PROVIDING FOR INSTANTANEOUS CHANGES OF DIRECTION, THE MEANS HOLDING THE BALL PROVIDING FOR FREE ROLLING ACTION OF THE BALL IN ANY DIRECTION RELATIVE TO THE SUPPORT, A BEARING ABOUT THE BALL, THE BEARING BEING LOCATED IN SAID BALL HOLDING MEANS, THE BALL HOLDING MEANS FORMING AN ENCLOSURE FOR A PORTION ONLY OF THE BALL, SAID BEARING COMPRISING AN ANNULAR MEMBER EXTENDING ABOUT THE BALL CLOSELY ADJACENT BUT JUST ABOVE A DIAMETRICAL POSITION ON THE BALL BEARING ELEMENTS IN THE ANNULAR MEMBER, AND A BRAKE ON THE SUPPORT ADAPTED TO ENGAGE THE BALL WITHIN THE ANNULAR MEMBER.
US532185A 1966-03-07 1966-03-07 Ball supported device Expired - Lifetime US3379454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US532185A US3379454A (en) 1966-03-07 1966-03-07 Ball supported device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US532185A US3379454A (en) 1966-03-07 1966-03-07 Ball supported device

Publications (1)

Publication Number Publication Date
US3379454A true US3379454A (en) 1968-04-23

Family

ID=24120711

Family Applications (1)

Application Number Title Priority Date Filing Date
US532185A Expired - Lifetime US3379454A (en) 1966-03-07 1966-03-07 Ball supported device

Country Status (1)

Country Link
US (1) US3379454A (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512798A (en) * 1967-12-04 1970-05-19 Samuel Siegel Skate board device
US3600001A (en) * 1969-06-18 1971-08-17 Patrick W Fisher Rotary ski sled
US3604726A (en) * 1969-06-25 1971-09-14 Int Enterprises Inc Balance ball for amusement and exercise
US4149735A (en) * 1977-09-29 1979-04-17 Ian Blackburn Skateboard pivot roller
USD385318S (en) * 1996-02-07 1997-10-21 Videtto Jeffrey J Ankle board
US5855385A (en) * 1996-09-23 1999-01-05 Hambsch; Stephen G. Wheeled board apparatus having platform with concave sidecuts
USD405141S (en) * 1995-09-29 1999-02-02 Carlo Bonzanigo Skateboard top
US6293565B1 (en) * 1998-12-04 2001-09-25 Netminders, Inc. Roller hockey goalie skate
US20050049527A1 (en) * 2003-08-25 2005-03-03 Green Bennett Edgal Sphere factor
US6874795B2 (en) 1999-04-07 2005-04-05 Chien-Min Sung Wheeled skate device
US20110148063A1 (en) * 2009-12-18 2011-06-23 Reyes Jr Jaime Alberto Mobile platform assembly
US20110148062A1 (en) * 2009-12-18 2011-06-23 Reyes Jr Jaime Alberto Mobile platform assembly
US20120043734A1 (en) * 2009-04-08 2012-02-23 Early Rider Limited Foot Propelled Vehicle
US8146929B1 (en) 2009-01-28 2012-04-03 Chrispen Johnson Skateboard with bearings
US20130296147A1 (en) * 2012-05-04 2013-11-07 Frederick Cruz Sk8fit - The Safe Indoor Board - Interactive Gaming System
US9079072B2 (en) 2011-03-31 2015-07-14 Scott C. Agostini Exercise device
US9750980B1 (en) 2017-05-04 2017-09-05 Kevin Khalili Self-contained transformable balance board
US9795863B1 (en) 2016-08-31 2017-10-24 Michael Linder Skateboard truck
CN107715468A (en) * 2017-11-14 2018-02-23 林龙辉 A kind of motion
US10040502B2 (en) * 2014-07-14 2018-08-07 Early Rider Limited Vehicle with spherical wheels
USD843515S1 (en) 2017-04-11 2019-03-19 Scott C. Agostini Exercise platform
US20190118070A1 (en) * 2016-04-21 2019-04-25 Abilitier Inc. Ball skate sole structure, skating shoe, sandal structure, and skateboard

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1517352A (en) * 1922-08-30 1924-12-02 William A Foote Foot bicycle
DE494395C (en) * 1930-03-22 Georg Duisenberg Roller skate with only one roller on the mounting plate and with auxiliary rollers
US1811532A (en) * 1930-03-17 1931-06-23 Andrew G Benetatos Skate
US2351293A (en) * 1941-12-27 1944-06-13 Saunders Bertha Exerciser
US2830824A (en) * 1955-08-29 1958-04-15 Irving H Young Dolly for moving parked vehicles
FR1215053A (en) * 1958-11-04 1960-04-13 Ski teaching device
US2994545A (en) * 1959-12-18 1961-08-01 Robert J Gass Tiltably steerable two-wheeled scooter
US3252713A (en) * 1964-06-29 1966-05-24 Peter V N Heller Scooter type vehicle
US3310320A (en) * 1965-09-30 1967-03-21 Ellis W Hanna Skate board

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE494395C (en) * 1930-03-22 Georg Duisenberg Roller skate with only one roller on the mounting plate and with auxiliary rollers
US1517352A (en) * 1922-08-30 1924-12-02 William A Foote Foot bicycle
US1811532A (en) * 1930-03-17 1931-06-23 Andrew G Benetatos Skate
US2351293A (en) * 1941-12-27 1944-06-13 Saunders Bertha Exerciser
US2830824A (en) * 1955-08-29 1958-04-15 Irving H Young Dolly for moving parked vehicles
FR1215053A (en) * 1958-11-04 1960-04-13 Ski teaching device
US2994545A (en) * 1959-12-18 1961-08-01 Robert J Gass Tiltably steerable two-wheeled scooter
US3252713A (en) * 1964-06-29 1966-05-24 Peter V N Heller Scooter type vehicle
US3310320A (en) * 1965-09-30 1967-03-21 Ellis W Hanna Skate board

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512798A (en) * 1967-12-04 1970-05-19 Samuel Siegel Skate board device
US3600001A (en) * 1969-06-18 1971-08-17 Patrick W Fisher Rotary ski sled
US3604726A (en) * 1969-06-25 1971-09-14 Int Enterprises Inc Balance ball for amusement and exercise
US4149735A (en) * 1977-09-29 1979-04-17 Ian Blackburn Skateboard pivot roller
USD405141S (en) * 1995-09-29 1999-02-02 Carlo Bonzanigo Skateboard top
USD420715S (en) * 1995-09-29 2000-02-15 Carlo Bonzanigo Skateboard top
USD385318S (en) * 1996-02-07 1997-10-21 Videtto Jeffrey J Ankle board
US5855385A (en) * 1996-09-23 1999-01-05 Hambsch; Stephen G. Wheeled board apparatus having platform with concave sidecuts
US6293565B1 (en) * 1998-12-04 2001-09-25 Netminders, Inc. Roller hockey goalie skate
US6874795B2 (en) 1999-04-07 2005-04-05 Chien-Min Sung Wheeled skate device
US20050049527A1 (en) * 2003-08-25 2005-03-03 Green Bennett Edgal Sphere factor
US8146929B1 (en) 2009-01-28 2012-04-03 Chrispen Johnson Skateboard with bearings
US8864150B2 (en) * 2009-04-08 2014-10-21 Early Rider Ltd. Foot propelled vehicle
US20120043734A1 (en) * 2009-04-08 2012-02-23 Early Rider Limited Foot Propelled Vehicle
US8226096B2 (en) 2009-12-18 2012-07-24 Reyes Jr Jaime Alberto Mobile platform assembly
US20110148062A1 (en) * 2009-12-18 2011-06-23 Reyes Jr Jaime Alberto Mobile platform assembly
US20110148063A1 (en) * 2009-12-18 2011-06-23 Reyes Jr Jaime Alberto Mobile platform assembly
US8226095B2 (en) 2009-12-18 2012-07-24 Reyes Jr Jamie Alberro Mobile platform assembly
US9878199B2 (en) 2011-03-31 2018-01-30 Scott C. Agostini Exercise device
US9079072B2 (en) 2011-03-31 2015-07-14 Scott C. Agostini Exercise device
US20150273274A1 (en) * 2011-03-31 2015-10-01 Scott C. Agostini Exercise device
US9216321B2 (en) * 2011-03-31 2015-12-22 Scott C. Agostini Exercise device
US9539465B2 (en) 2011-03-31 2017-01-10 Scott C. Agostini Exercise device
US10279213B2 (en) 2011-03-31 2019-05-07 Scott C. Agostini Exercise device
US20130296147A1 (en) * 2012-05-04 2013-11-07 Frederick Cruz Sk8fit - The Safe Indoor Board - Interactive Gaming System
US10040502B2 (en) * 2014-07-14 2018-08-07 Early Rider Limited Vehicle with spherical wheels
US20190118070A1 (en) * 2016-04-21 2019-04-25 Abilitier Inc. Ball skate sole structure, skating shoe, sandal structure, and skateboard
EP3476447A4 (en) * 2016-04-21 2020-04-01 Abilitier Inc. Ball skate sole structure, skating shoe, sandal structure, and skateboard
US10625142B2 (en) * 2016-04-21 2020-04-21 Abilitier Inc. Ball skate sole structure, skating shoe, sandal structure, and skateboard
US9795863B1 (en) 2016-08-31 2017-10-24 Michael Linder Skateboard truck
USD843515S1 (en) 2017-04-11 2019-03-19 Scott C. Agostini Exercise platform
US9750980B1 (en) 2017-05-04 2017-09-05 Kevin Khalili Self-contained transformable balance board
CN107715468A (en) * 2017-11-14 2018-02-23 林龙辉 A kind of motion

Similar Documents

Publication Publication Date Title
US3379454A (en) Ball supported device
US5169166A (en) Steering mechanism
US3399904A (en) Skate board structure
US1585258A (en) Pole monocycle
US5090716A (en) Extended elevated foot platform
US4061348A (en) Roller skates
US5160155A (en) Skateboard having two wheels in tandem
US20030020244A1 (en) Wheeled skate device
US3663038A (en) Vehicle with combination steering, braking and propulsion means
US4541643A (en) Two wheel skating device
US20090066150A1 (en) Cam Action Caster Assembly for Ride-On Devices
US3310320A (en) Skate board
US4941670A (en) Ride-on device for transportation and stunt riding
US2474082A (en) Skate
US3870334A (en) Sidewalk coaster sled
US3567242A (en) Wheeled coaster device
US9987546B1 (en) Roller board with one or more user-maneuverable trucks and north-seeking return mechanism
EP0529188A1 (en) Motor vehicle
US3646706A (en) Toy vehicle
US887812A (en) Amusement device.
US4073500A (en) Wheel board undulating coaster
US3438642A (en) Whirlable vehicle
JPH0450079Y2 (en)
US2920904A (en) Sit and roll unicycle
EP0135539A1 (en) Occupant propelled wheeled device