A marking device that is supported by a personal mobility vehicle, such as a scooter, is movable from a first position, in which the marking device does not contact the riding surface, and a second position, in which the marking device contacts the riding surface. The marking device includes an attachment portion and a marking portion that creates markings on the riding surface as a result of frictional contact with the riding surface. The marking device can also include an actuation portion which is accessible to the user and allows the user to move the marking device to the second position. In one arrangement, the marking device includes an elastic marking member which is configured to bend in order to maintain contact with the riding surface.

An electric vehicle may include a board having two deck portions each configured to receive a foot of a rider, and a wheel assembly disposed between the deck portions. A motor assembly may drive the wheel assembly in response to board orientation and rider presence information. A rider detection mechanism may include one or more strain gauges, and may be configured to detect rider presence and rider weight information. A responsiveness of the motor may be automatically adjusted based on the rider weight information.

An electric vehicle may include a board having two deck portions each configured to receive a foot of a rider, and a wheel assembly disposed between the deck portions. A motor assembly may drive the wheel assembly in response to board orientation and rider presence information. A rider detection mechanism may include one or more strain gauges, and may be configured to detect rider presence and rider weight information. A responsiveness of the motor may be automatically adjusted based on the rider weight information.

In an aspect, a foot-deck based vehicle is provided, comprising a foot-deck, a front wheel arrangement, a rear wheel arrangement and a biasing member. The foot-deck has a front end and a rear end. The front wheel arrangement is proximate the front end. The rear wheel arrangement is proximate the rear end. The foot-deck has a first foot-deck portion and a second foot-deck portion that is rearward of the first foot-deck portion and that is movable relative to the first foot-deck portion. The second foot-deck portion extends rearward of the rear wheel arrangement. The biasing member biases the second foot-deck portion towards a home position relative to the first foot-deck portion. The second foot-deck portion is moveable from the home position downward to a biased position so as to store potential energy in the biasing member such that the biasing member urges the first foot-deck portion upward.

A skateboard truck mountable to a deck of a skateboard, the truck comprising a base plate including a storage cavity formed within the base plate for removably accommodating a storage drawer for storing small items. The storage cavity is arranged facing away from the skateboard deck when the truck is mounted onto the deck. The base plate can include a biasing member disposed at a distal end for propelling the storage drawer outwards from the storage cavity. The storage drawer can include a latch adapted to releasably engage with a drawer retention feature provided within the storage cavity, thus preventing the storage drawer from sliding out of the storage cavity. A release pin is provided within the base plate for releasably engaging the latch to dislodge the latch from the retention feature allowing the storage drawer to slide out from the storage cavity to gain access to the items.

A skateboard truck mountable to a deck of a skateboard, the truck comprising a base plate including a storage cavity formed within the base plate for removably accommodating a storage drawer for storing small items. The storage cavity is arranged facing away from the skateboard deck when the truck is mounted onto the deck. The base plate can include a biasing member disposed at a distal end for propelling the storage drawer outwards from the storage cavity. The storage drawer can include a latch adapted to releasably engage with a drawer retention feature provided within the storage cavity, thus preventing the storage drawer from sliding out of the storage cavity. A release pin is provided within the base plate for releasably engaging the latch to dislodge the latch from the retention feature allowing the storage drawer to slide out from the storage cavity to gain access to the items.

A roller mounting apparatus for an in-line roller skate blade comprises a body having a footware connector portion, a spacing portion adjacent the footware connector portion and a roller mounting portion adjacent the spacing portion. The roller mounting portion has roller mounts for mounting a plurality of rollers in tandem spaced apart positions such that contact points on outer surfaces of the rollers will lie on a first common curved line having no portion with a radius of curvature more than about 10 m, so that a contact point on a surface of a roller immediately adjacent to any given roller is spaced apart between about 0.1 mm to about 13 mm from a line tangent to the curved line at a point defined by the contact point of the given roller. A roller blade comprising the roller mounting apparatus is also disclosed. There is also disclosed a method of sharpening an outer circumferential surface of a rotatable roller of a roller blade by causing an outer circumferential surface of a rotating grinding implement to contact the outer circumferential surface of the rotatable roller at a contact point such that a grinder plane containing the contact point and a rotation axis of the rotating grinding implement is disposed at an angle to a roller plane containing the contact point and a rotational axis of the roller. Also disclosed is a method of sharpening an outer circumferential surface of a rotatable roller by causing an outer circumferential surface of a rotating grinding implement to contact the outer circumferential surface of the rotatable roller such that the rotating grinding implement tends to drive the roller in a first direction of rotation while causing a contact surface of a rotating drive wheel to contact the roller to cause the roller to rotate in a second direction against the first direction of rotation to cause relative movement between the roller and the outer circumferential surface of the grinding implement.

A roller mounting apparatus for an in-line roller skate blade comprises a body having a footware connector portion, a spacing portion adjacent the footware connector portion and a roller mounting portion adjacent the spacing portion. The roller mounting portion has roller mounts for mounting a plurality of rollers in tandem spaced apart positions such that contact points on outer surfaces of the rollers will lie on a first common curved line having no portion with a radius of curvature more than about 10 m, so that a contact point on a surface of a roller immediately adjacent to any given roller is spaced apart between about 0.1 mm to about 13 mm from a line tangent to the curved line at a point defined by the contact point of the given roller. A roller blade comprising the roller mounting apparatus is also disclosed. There is also disclosed a method of sharpening an outer circumferential surface of a rotatable roller of a roller blade by causing an outer circumferential surface of a rotating grinding implement to contact the outer circumferential surface of the rotatable roller at a contact point such that a grinder plane containing the contact point and a rotation axis of the rotating grinding implement is disposed at an angle to a roller plane containing the contact point and a rotational axis of the roller. Also disclosed is a method of sharpening an outer circumferential surface of a rotatable roller by causing an outer circumferential surface of a rotating grinding implement to contact the outer circumferential surface of the rotatable roller such that the rotating grinding implement tends to drive the roller in a first direction of rotation while causing a contact surface of a rotating drive wheel to contact the roller to cause the roller to rotate in a second direction against the first direction of rotation to cause relative movement between the roller and the outer circumferential surface of the grinding implement.

A stroller-attachable skateboard apparatus comprises a skateboard, a connection rod and and an adjustable mounting bracket. The connection rod includes a board engagement portion, a stroller engagement portion and a rod axis. A rod securement interface of the skateboard receives the board engagement portion and rigidly retains it therein by way of an actuatable locking pin such that the rod axis extends laterally of the skateboard's longitudinal axis. The stroller engagement portion is axially receivable by a rod receiving element and releasably axially locked therein by way of a first spring-biased actuator element. The rod receiving element may be provided as part of the adjustable mounting bracket or as a pre-existing wheel axle end from which a stroller wheel has been removed. The mounting bracket facilitates highly-adjustable mounting of the skateboard to a frame member of a standard, unmodified stroller. The connection rod may also be adjusted for extension length.

A stroller-attachable skateboard apparatus comprises a skateboard, a connection rod and and an adjustable mounting bracket. The connection rod includes a board engagement portion, a stroller engagement portion and a rod axis. A rod securement interface of the skateboard receives the board engagement portion and rigidly retains it therein by way of an actuatable locking pin such that the rod axis extends laterally of the skateboard's longitudinal axis. The stroller engagement portion is axially receivable by a rod receiving element and releasably axially locked therein by way of a first spring-biased actuator element. The rod receiving element may be provided as part of the adjustable mounting bracket or as a pre-existing wheel axle end from which a stroller wheel has been removed. The mounting bracket facilitates highly-adjustable mounting of the skateboard to a frame member of a standard, unmodified stroller. The connection rod may also be adjusted for extension length.