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	Mecanum wheel - Wikipedia, the free encyclopedia
		It is sometimes called the Ilon wheel after its Swedish inventor, Bengt Ilon, who came up with the idea in 1973 when he was an engineer with the Swedish company Mecanum AB.
		It is a conventional wheel with a series of rollers attached to its circumference, these rollers having an axis of rotation at 45° to the plane of the wheel in a plane parallel to the axis of rotation of the wheel.
		Wheel chair with Mecanum wheels the wheel chair was presented 2006 on the EVER Monaco
	en.wikipedia.org /wiki/Mecanum_wheel (341 words)

	Wheelchair - Wikipedia, the free encyclopedia
		Wheelchair fitted with Mecanum wheels, taken at an exhibition in the early 1980s.
		Various optional accessories are available, such as anti-tip bars or wheels, safety belts, adjustable backrests, tilt and/or recline features, extra support for limbs or neck, mounts or carrying devices for crutches, walkers or oxygen tanks, drink holders, and clothing protectors.
		The electric wheelchair shown on the right is fitted with Mecanum wheels (sometimes known as Ilon wheels) which give it complete freedom of movement.
	en.wikipedia.org /wiki/Wheelchair (2256 words)

	hee: Innovative wheels
		The wheel units can be placed on the bottom of the vehicle in a quite freely chosen number and pattern.
		The wheel was conceived by the swede Bengt Ilon in 1973.
		When the wheel turns, the slats on the ground will stay in place, because it is easier for the joint to turn than for the slat to move.
	www.h33.dk /opfhjul_index.en.html (627 words)

	Kids.Net.Au - Encyclopedia > Wheelchair
		It typically consists of a seat supported on two large wheels on an axle attached towards the back of the seat and two small wheels near the feet, though there are often small additional features to prevent toppling or to assist mounting curbs.
		The person moves by pushing with his/her hands circular bars on the outside of the large wheels with a diameter that is slightly less than that of the wheels, or by actuating motors, usually with a joystick.
		Experiments have also been made with unusual variant wheels, like the omniwheel[?] or the mecanum wheel[?].
	www.kids.net.au /encyclopedia-wiki/wh/Wheelchair (189 words)

	INTRODUCTION
		The Mecanum wheel is an example of the special wheel design that has a number of small passive rollers mounted on the periphery of a normal wheel.
		The wheel is driven in a normal fashion, while the rollers allow for free motion in the perpendicular direction.
		In the ball wheel design, power from a motor is transmitted through gears to an active roller ring and then to the ball via friction between the rollers and the ball (much like a the action in a computer mouse).
	www.stevens-tech.edu /engineering/me/Undergraduate/senior_design/2003/Omni/INTRODUCTION.htm (464 words)

	Wireless robotics: Mobile robots (Site not responding. Last check: 2007-10-25)
		Two of these wheels are passive (the rear wheels), and their direction is fixed (the lone front wheel steers).
		Figure 5 illustrates the Ackerman principle, which refers to the fact that the inner wheel turns along a circle whose radius is smaller than the turning circle of the outer wheel.
		For a four-wheeled omnidirectional robot, you might choose a wheel in which the cylinders are at a 45° angle to the direction of the wheels.
	www.ibm.com /developerworks/library/wi-robot5/index.html?ca=drs- (3082 words)

	Electric Wheelchair Information Center (Site not responding. Last check: 2007-10-25)
		A wheelchair is a medical device that takes the form of a chair on wheels, used by people for whom walking is difficult or impossible due to illness or disability.
		A person moves a self-propelled manual chair by pushing circular bars on the outside of the large wheels with their hands called handrims, these have a diameter that is slightly less than that of the rear wheels.
		Wheelbasesâ”These are wheeled platforms with specially-moulded seating systems interfaced with them for those with a more complicated posture.
	www.electricwheelchaircenter.info (953 words)

	Transport Wheel Chairs, Transport WheelChairs
		Transport Wheelchairs- Wheelchairs that can only be pushed by another person, having all four wheels of equal size, usually approximately 8 inches in diameter, instead of two large wheels in the rear (usually approximately 22—24 inches) and two small 8-inch wheels in the front.
		Transport wheel chairs are the only wheelchairs that are not meant for people who really need wheelchairs.
		These transport wheel chairs go from a low of 89 dollars for the transport wheelchair to a high of 1,100 dollars for the Invacare lightweight transport wheelchair.
	www.wheel-chair-wheelchair.info /transport-wheel-chair.htm (628 words)

	[No title] (Site not responding. Last check: 2007-10-25)
		a wheelchair that can only be pushed by another person (also known as a transport chair, having all four wheels of equal size, usually approximately 8 inches in diameter, instead of two large in the rear [usually approximately 22 -24 inches] and two small 8 inch wheels in the front.
		It typically consists of a seat and back supported on two large wheels on an axle attached towards the back of the seat and two small wheels near the feet, though there are often small additional features to prevent toppling or to assist mounting curbs.
		A person moves by pushing with his/her hands circular bars on the outside of the large wheels with a diameter that is slightly less than that of the wheels, or by actuating motors, usually with a
	www.brujula.net /english/wiki/Wheelchair.html (369 words)

	Definition of a Wheelchair
		An optimal configuration of the wheels is an important factor in overcoming rolling resistance.
		A larger distance between rear wheels and castors decreases the pressure on the castors, resulting in a lower rolling resistance.
		It should be as low as possible in order not to brake the wheels while propelling, but it should be high enough to make it possible to transmit a certain amount of power from hand to handrim.
	www.apparelyzed.com /wheelchair.html (1345 words)

	Experimental Setup
		A Mecanum wheel, as shown in figure 1 consists of a central hub with free moving rollers, which are mounted at
		The outline of the rollers is such that the projection of the wheel appears to be circular.
		The wheel configuration of the mobile system is presented in figure 1.
	prt.fernuni-hagen.de /virtlab/cdc99/html/node3.html (372 words)

	Wheelchair Casters -- Recommendations and Resources (Site not responding. Last check: 2007-10-25)
		It is to the angle between the pivot line (an imaginary line that runs through the center of the upper ball joint to the center of the lower ball joint) and vertical.
		In the extreme case of the shopping wheel trolley the system is undamped, but stable, as the wheel oscillates around the 'correct' path.
		Wheelchairs that can only be pushed by another person, having all four wheels of equal size, usually approximately 8 inches in diameter, instead of two large in the rear (usually approximately 22 -24 inches) and two small 8 inch wheels in the front.
	www.becomingapediatrician.com /health/174/wheelchair-casters.html (864 words)

	Wheelchair
		Some are convertible (by removing the motor and changing the wheels) to manual.
		Wheelchairs that can only be pushed by another person, having all four wheels of equal size, usually approximately 8 inches in diameter, instead of two large wheels in the rear (usually approximately 22–24 inches) and two small 8-inch wheels in the front.
		A person moves a manual chair by pushing with their hands, circular bars on the outside of the large wheels, which have a diameter that is slightly less than that of the rear wheels.
	www.mrsci.com /Medical-Equipment/Wheelchair.php (697 words)

	wheel chair (Site not responding. Last check: 2007-10-25)
		wheel chair If you expected a page to be here, and it is not, the page may not yet be visible due to a delay in updating the database, or it may have been deleted.
		If you expected a page to be here, and it is not, the page may not yet be visible due to a delay in updating the database, or it may have been deleted.
		wheel chair Promotional articles about yourself, your friends, your company or products; or articles written as part of a marketing or promotional campaign, may be deleted in accordance with our deletion policies.
	splog.me.uk /wheel-chair.aspx (2557 words)

	Everything about Wheel Chair, Manual, Power, Electric Lift (Site not responding. Last check: 2007-10-25)
		These are propelled by the occupant usually by using large rear wheels, typically 24" in diameter (variable 20"-26").
		A person moves a self-propelled manual chair by pushing,circular bars on the outside of the large wheels with their hands called handrims, these have a diameter that is slightly less than that of the rear wheels.
		Wheelchairs that can only be pushed by another person, having two 12" wheels instead of two large wheels in the rear and two small 8-inch castor wheels at the front.
	www.ebizpersonal.info /home/wheel-chair-011306.htm (617 words)

	Chief Delphi - pic: Jester Drive:Mecanum Wheel Drive Train (Site not responding. Last check: 2007-10-25)
		The wheels, wheel molds, were created by team members under the assistance of mentor Mr.
		These wheels are specifically designed for the purpose of allowing slip so the the robot can move laterally left and right as well as provide decent traction for forward and backward movement.
		The wheels allow for slip so we can be pushed with enough force and so that it does not damage parts for the drive train (easily, all things break).
	www.chiefdelphi.com /forums/archive/index.php/t-36079.html (5512 words)

	ESE442 Senior Design Project Abstracts 04-05
		A Mecanum Wheel consists of multiple smaller wheels or rollers attached to a central hub wheel by brackets or cleats at 45-degree angles to the hub.
		Functionality of the wheel is that, when four are attached to a vehicle, such as in an automobile or a forklift, the vehicle has omnidirectional capabilities, based on varying the speed of rotation of independent wheel motors connected to each hub.
		The purpose of building the Mecanum Wheeled Robot is to create a vehicle, which is omnidirectional based on control by a joystick.
	www.seas.upenn.edu /ese/ee442/0405/ee442abstracts0405.html (3889 words)

	Chief Delphi - pic: 2" Mecanum Wheel (Site not responding. Last check: 2007-10-25)
		yes, royal assault theyre 8" mecanum wheels i admire very much and they are deffenetly not the first or the last of their kind.
		I love their button they were giving away it was just a mecanum wheel side view.
		there problem was getting up the ramp with those huge wheels all 4 of them had to be touching the ground for the robot to move properly, going up the ramp at any angle but straight on wouldn't work.
	www.chiefdelphi.com /forums/showthread.php?p=492219#post492219 (312 words)

	Chief Delphi - pic: Jester Drive:Mecanum Wheel Drive Train (Site not responding. Last check: 2007-10-25)
		Making the wheel we had at nationals (for display only) took about 2 years from initial concept through prototyping to the wheel.
		Omni wheels all 45 degrees apart from each other produce exactly the same effect the mecanum wheels do, and you can control the robot exactly the same way.
		I thought he was referring to omni wheels set in the same frame as our mecanum wheels.
	www.chiefdelphi.com /forums/showthread.php?p=381885 (1880 words)

	Airtrax omni-directional "wheels" - Signal vs. Noise (by 37signals)
		Here’s a supplier for this type of wheel, which looks simpler than the Mecanum wheels if you’re interested in playing with them.
		But their wheel would be useful for warehouses as well.
		Our two front wheels consisted of a set of two plates, each with “wheels” along the edge, offset so that no matter what position the wheel-of-wheels was, it could slide side-to-side.
	37signals.com /svn/archives2/airtrax_omnidirectional_wheels.php (898 words)

	Mechatronics and Machine Vision in Practice 2003
		An alternative implement positioning method is proposed that avoids the use of steered coulters or wheels: unequal drag forces from differential dig depths of the implement's wings linearly slews the rig, changing its path.
		Concepts of control system design in the presence of sharp nonlinearities and of topology of the feedback structure are introduced and illustrated with the example of an inverted pendulum, the culmination of the first sequence of experiments.
		For a further experiment, a three-wheeled variation on the mecanum mobile has been designed as the base of a pendulum to be balanced in both directions.
	www.m2vip.com /2003/Fullprog.htm (6200 words)

	Wheelchair - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-25)
		Self-Propelled Wheelchairs: These are propelled by the occupant usually by using large rear wheels, typically 24" in diameter (variable 20"-26").
		A person moves a self-propelled manual chair by pushing with their hands, circular bars on the outside of the large wheels, which have a diameter that is slightly less than that of the rear wheels.
		Power chairs are moved by actuating motors, and can be controlled by various methods from a simple joystick to chin controls and puff/suck scanners for those with C2-3 Spinal Cord lesions or head injuries.
	88.208.194.172 /wiki/index.php/Wheelchair (972 words)

	Wheelchairs Electric Wheel Chair Motorized power mobility new 600
		Electric 3 and 4 wheel scooters are self-contained units that allow you to go forward and reverse at the simple touch of your finger Scooter Simple press your finger to go forward and reverse.
		Wheel chair porch elevators allow you to use your Wheelchair Elevators at a minimum investement in your home, school, mobile home and porch.
		Wheel chair Lifts are designed to work with most cars, suv's, trucks, van's; inside and outside your car Wheelchair Lifts
	www.worlds-lowest-prices.com /Contact-Wheelchairs.html (1508 words)

	DelcoTimes - U.D. robotics team headed to nationals (Site not responding. Last check: 2007-10-25)
		"The wheels are a big part of the project," said Elizabeth Hale, UDHS science teacher and faculty advisor to the InvenTeam and robotics team.
		According to Hale, the revolutionary 10-inch Mecanum wheel has never been made before, and the technology that students used to make the rollers has also never before been attempted.
		The unique design of this wheel allows it to change direction by changing motor speeds to each wheel independently, rather than by conventional steering.
	www.delcotimes.com /site/news.cfm?newsid=16489536&BRD=1675&PAG=461&dept_id=18171&rfi=6 (919 words)

	robots.net : robomenu robot gallery Omni-Directional Vehicle
		A unique, highly manuverable vehicle based on the ILON omni-directional wheel.
		Sometimes, the wheel is called a MECANUM omni-directional wheel.
		A series of vehicles ranging from 70 pounds to two vehicles weighing in excess of 7,000 pounds have been built.
	robots.net /robomenu/996604291.html (94 words)

	Wheelchair -- Recommendations and Resources (Site not responding. Last check: 2007-10-25)
		For example, "travelling" in wheelchair basketball occurs when the athlete touches his wheels more than twice after receiving or dribbling the ball.
		The individual must pass, bounce or shoot the ball before he or she can touch their wheels again.
		Wheelchair basketball has intense competition on the international level, and competitions include the Paralympic Games, an event held for athletes with physical disabilities in the Olympic host city two weeks after the Olympic Games, and the Gold Cup, a qualifying tournament held two years after every paralympics.
	www.becomingapediatrician.com /health/174/wheelchair.html (1276 words)

	Mechanical Engineering Degrees - Mechanical and Systems Engineering - University of Newcastle
		Although this is a fairly slow process, even slight changes to the geometry of the wheel and rail can cause major changes in the running behaviour of trains.
		The Wheel Rail Interface Group (WRIG) has created a unique computer simulation to model rail wear, and its development and improvement is ongoing.
		However, it is very difficult to determine how badly a rail or wheel is cracked from its external appearance, and it is not cost effective to take remedial action merely on the suspicion of a crack or defect.
	www.ncl.ac.uk /mech/undergrad/mechanical/Projects2005.htm (5556 words)

	Upper Darby High School Robotics - Royal Assault - Team 357
		Their technology is based on refinements in design and engineering of the mecanum wheel.
		Airtrax is also an eager supporter of Lemelson-MIT InvenTeam project to adapt the mecanum wheel drive system for use on a wheelchair.
		Their bearings were featured on numerous places on our robot including, the ball shooter, collector, articulating frame, and, of course, the wheels.
	www.team357.org /?page=sponsors (752 words)

	Wheelchairs -- Powerchairs
		axle attached towards the back of the seat and two small wheels near the feet, though there are often small additional features to prevent toppling or to assist mounting curbs.
		Wheelchairs come in many sizes and colors and can be highly customized, with several options including seat size (width and depth), seat-to-floor height, footrests/leg rests, and much more.
		A person moves by pushing with his/her hands circular bars on the outside of the large wheels with a diameter that is slightly less than that of the wheels, or by actuating
	www.edinformatics.com /inventions_inventors/wheelchair.htm (396 words)

	S.P.A.M. Robotics -> most popular drivetrains (Site not responding. Last check: 2007-10-25)
		casters - 1 caster, 2 skid (3 wheels)
		Swerve steering is where wheels mounted on modules can rotate independently and vector thrust in a 360 degree arc.
		I like omni a lot, but it is a LOT of work to make the wheels.
	www.spamrobotics.com /forums/index.php?s=940a871a8db5e1c05041cef2339fecfd&showtopic=35&st=0& (804 words)

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