Patent ID: 7803031

Claim:
A vehicle having non-circular wheels propelled by a moving force, the vehicle ( 10 ) comprising: a. a frame ( 12 ) having a first non-circular wheel ( 20 ) a second non-circular wheel ( 22 ) and at least a third non-circular wheel ( 24 ) secured to the frame ( 12 ), each non-circular wheel ( 20 , 22 , 24 ) including a perimeter having at least two contact segments ( 29 , 50 ) for contacting a support surface ( 52 ) under and supporting the vehicle ( 10 ); b. linkage means ( 18 ) secured to the non-circular wheels ( 20 , 22 , 24 ) for rotating all non-circular wheels ( 20 , 22 , 24 ) upon the rotation of one of the non-circular wheels ( 20 , 22 , 24 ); c. the non-circular wheels ( 20 , 22 , 24 ) secured to the frame ( 12 ) in a sequential alignment so that whenever a first contact segment ( 50 ) of the first non-circular wheel ( 20 ) is secured to the frame ( 12 ) in a contact alignment ( 46 ) to contact the support surface ( 52 ) below the vehicle ( 10 ), a first contact segment ( 29 ) of the second non-circular wheel ( 22 ) is secured to the frame ( 12 ) in a collapse alignment ( 44 ) whereby motion of the vehicle ( 10 ) in a direction of travel ( 30 ) moves the second non-circular wheel ( 22 ) from the collapse alignment ( 44 ) to the contact alignment ( 46 ), and so that whenever the first contact segment ( 29 ) of the second non-circular wheel ( 22 ) is in the collapse alignment ( 44 ), a first contact segment of the third non-circular wheel ( 24 ) is secured to the frame ( 12 ) in a non-contact, non-collapse alignment ( 48 ); and, d. moving force means for propelling the non-circular wheels ( 20 , 22 , 24 ) to sequentially move from collapse alignment ( 32 ) to contact alignment ( 34 ) to move the vehicle ( 10 ) in the direction of travel ( 30 ).