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Class Information
Number: 180/21
Name: Motor vehicles > Special wheel base
Description: Motor vehicles in which the arrangement of the road-wheels differs from the usual one in which straight lines joining the points of contact of the wheels with the road form approximately a rectangle when the steering-wheels are in the straightaway position.


Sub-classes under this class:

Class Number Class Name Patents
180/208 Collapsible or knockdown for storage or transport 112
180/22 Five or more wheels 101
180/210 Having only three wheels 140
180/218 Having only two wheels 42
180/209 With means for changing number of supporting wheels, or for adjusting relative location thereof 282
180/205 With mechanism of occupant-powered type for developing torque for supplementing, alternating with, or replacing torque of motor 145


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7424927 Vehicle, vehicle control device and vehicle control method Sep. 16, 2008
7370713 Personal mobility vehicles and methods May. 13, 2008
7337862 Mono-wheel vehicle with tilt mechanism Mar. 4, 2008
7303032 Two-wheel battery-powered vehicle for one person Dec. 4, 2007
7296643 Drive unit, and a powered vehicle Nov. 20, 2007
7273116 Dynamic balancing vehicle with a seat Sep. 25, 2007
7249775 Wheel suspension Jul. 31, 2007
7243746 Recreational electric vehicle Jul. 17, 2007
7210544 Control of a transporter based on attitude May. 1, 2007
7086491 Personal compact cart Aug. 8, 2006
7044251 Vehicle conversion apparatus and method May. 16, 2006
7004271 Dynamic balancing vehicle with a seat Feb. 28, 2006
6796398 Round-circular vehicle and method therefor Sep. 28, 2004
6742613 Water jet reversing propulsion and directional controls for automated swimming pool cleaners Jun. 1, 2004
6651766 Personal mobility vehicles and methods Nov. 25, 2003
6601665 Bogey beam axle support for utility vehicles Aug. 5, 2003
6575539 Wheel attachment Jun. 10, 2003
6571892 Control system and method Jun. 3, 2003
6561294 Balancing vehicle with passive pivotable support May. 13, 2003
6505698 End-weighted vehicle Jan. 14, 2003
6491127 Powered caster wheel module for use on omnidirectional drive systems Dec. 10, 2002
6478099 Wheelchair with offset drive wheels Nov. 12, 2002
6474434 Drive wheel Nov. 5, 2002
6428026 Staggered independent suspension Aug. 6, 2002
6414457 Autonomous rolling robot Jul. 2, 2002
6405816 Mechanical improvements to a personal vehicle Jun. 18, 2002
6382334 Power drive unit for a golf trolley May. 7, 2002
6367817 Personal mobility vehicles and methods Apr. 9, 2002
6345675 Mobile apparatus Feb. 12, 2002
6343669 ATV with vertical crankshaft engine Feb. 5, 2002
6336514 Wheel suspension for motor vehicles, especially utility vehicles Jan. 8, 2002
6302230 Personal mobility vehicles and methods Oct. 16, 2001
6270106 All terrain vehicle with full platform style footrest and foot shifted manual transmission Aug. 7, 2001
6213237 Motorcycle stop support wheels Apr. 10, 2001
6155368 Auxiliary wheel conversion assembly for a motorcycle Dec. 5, 2000
6085864 Cough muffler Jul. 11, 2000
6050367 Bi-directional vehicle Apr. 18, 2000
6003624 Stabilizing wheeled passenger carrier capable of traversing stairs Dec. 21, 1999
6000484 Articulating wheeled permanent magnet chassis with high pressure sprayer Dec. 14, 1999
5975225 Transportation vehicles with stability enhancement using CG modification Nov. 2, 1999
5960900 Torque compensator for motorcycle Oct. 5, 1999
5904218 Single-track vehicle with independently actuable and limited-pivot-angle caster side wheels May. 18, 1999
5890554 Miniature vehicle Apr. 6, 1999
5857534 Robotic inspection apparatus and method Jan. 12, 1999
5853057 Auxiliary wheel conversion assembly for a motorcycle Dec. 29, 1998
5816354 Single track vehicle Oct. 6, 1998
5791425 Control loop for transportation vehicles Aug. 11, 1998
5701965 Human transporter Dec. 30, 1997
5697464 Ride-on vehicle for golf club bag and the like Dec. 16, 1997
5628379 Single track vehicle May. 13, 1997

1 2 3


 
 
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