A three wheeled vehicle is provided that can include a frame, a steerable front wheel secured to a front end of the frame, a first trailing wheel arm having a first rear wheel secured thereto and a second trailing wheel arm having a second rear wheel secured thereto, and a central suspension joint secured to the frame on which the first and second trailing wheel arm is rotatably secured on either side of the frame. Further, the vehicle can include a horizontal linkage pivotably connected on the frame at the midsection beneath the first and second trailing wheel arms and linked to an underside of the first and second trailing wheel arm between the first wheel and the central suspension joint proximal to a first end of the horizontal linkage and between the second wheel and the central suspension joint proximal to a second end of the horizontal linkage, respectively.

A three wheeled vehicle is provided that can include a frame, a steerable front wheel secured to a front end of the frame, a first trailing wheel arm having a first rear wheel secured thereto and a second trailing wheel arm having a second rear wheel secured thereto, and a central suspension joint secured to the frame on which the first and second trailing wheel arm is rotatably secured on either side of the frame. Further, the vehicle can include a horizontal linkage pivotably connected on the frame at the midsection beneath the first and second trailing wheel arms and linked to an underside of the first and second trailing wheel arm between the first wheel and the central suspension joint proximal to a first end of the horizontal linkage and between the second wheel and the central suspension joint proximal to a second end of the horizontal linkage, respectively.

A representative system includes a personal transportation device with: first and second wheels aligned along an axis; an idler wheel rearward of the axis; a platform configured to support a user in a standing position; electric motors to drive the first and second wheels; first and second hand grips fixed in position at respective locations forward of the platform; and first and second control actuators disposed, respectively, on the first and second hand grips, the first and second control actuators being operative to control rotations of the first and second wheels and configured to be actuated by corresponding thumbs of the user while hands of the user are grasping corresponding ones of the first hand grip and the second hand grip.

A representative system includes a personal transportation device with: first and second wheels aligned along an axis; an idler wheel rearward of the axis; a platform configured to support a user in a standing position; electric motors to drive the first and second wheels; first and second hand grips fixed in position at respective locations forward of the platform; and first and second control actuators disposed, respectively, on the first and second hand grips, the first and second control actuators being operative to control rotations of the first and second wheels and configured to be actuated by corresponding thumbs of the user while hands of the user are grasping corresponding ones of the first hand grip and the second hand grip.

An electric powered personal mobility vehicle that includes at least one front wheel and an electric motor that provides rotational force to a wheel of the vehicle. The electric motor is supported by the vehicle and is powered by a rechargeable battery that is also supported by the vehicle. The vehicle can also include swivel caster wheels each configured to rotate about a wheel axis.

An electric powered personal mobility vehicle that includes at least one front wheel and an electric motor that provides rotational force to a wheel of the vehicle. The electric motor is supported by the vehicle and is powered by a rechargeable battery that is also supported by the vehicle. The vehicle can also include swivel caster wheels each configured to rotate about a wheel axis.

A vehicle including a single front wheel arranged on a center line extending in a front-rear direction, two rear wheels arranged on a left side and a right side of the center line, a steering part arranged above the front wheel, a placement part on which feet of an occupant are placed, a first member rotatably supporting the front wheel and supporting the front wheelin a steerable manner by the steering part, a second member arranged behind the first member to rotatably support the two rear wheels, and a connecting part connecting the first member and the second member swingably in a left-right direction about an axial line extending in the front-rear direction. The placement part is supported by the second member (20).

A vehicle including a single front wheel arranged on a center line extending in a front-rear direction, two rear wheels arranged on a left side and a right side of the center line, a steering part arranged above the front wheel, a placement part on which feet of an occupant are placed, a first member rotatably supporting the front wheel and supporting the front wheelin a steerable manner by the steering part, a second member arranged behind the first member to rotatably support the two rear wheels, and a connecting part connecting the first member and the second member swingably in a left-right direction about an axial line extending in the front-rear direction. The placement part is supported by the second member (20).

A resisting force change mechanism includes a first portion and a second portion configured to change a resisting force against relative displacement. The first portion is supported on any one of a first side member, a second side member, a first cross member, and a second cross member of a link mechanism where at least a portion thereof is superposed on one member at all times. The first portion is aligned with the one member and a steering shaft at the front. The second portion is supported on any other one of the body frame, the first side member, the second side member, the first cross member, and the second cross member that is displaced relative to the one member on which the first portion is supported. The second portion is located at a position where at least a portion thereof is superposed on the other member at all times.

A resisting force change mechanism includes a first portion and a second portion configured to change a resisting force against relative displacement. The first portion is supported on any one of a first side member, a second side member, a first cross member, and a second cross member of a link mechanism where at least a portion thereof is superposed on one member at all times. The first portion is aligned with the one member and a steering shaft at the front. The second portion is supported on any other one of the body frame, the first side member, the second side member, the first cross member, and the second cross member that is displaced relative to the one member on which the first portion is supported. The second portion is located at a position where at least a portion thereof is superposed on the other member at all times.