Abstract: A drive mechanism for an elliptically-driven device includes a drive arm with a foot platform pivot assembly; a crank arm; a foot platform assembly pivotally coupled to the drive arm via the foot platform pivot assembly; a foot platform angle adjustment mechanism operably coupling the foot platform assembly to the crank arm so as to impart a foot platform angle of the foot platform assembly relative to the drive arm that varies during a stroke of the foot platform assembly.

Abstract: A stowable steering column for a vehicle comprising a fork steerer tube including a fork; a base coupled to the fork steerer tube; a steering tube slidably received within the base and the fork steerer tube, the steering tube including an upper terminal end and a lower portion; a handlebar assembly coupled to the upper terminal end of the steering tube. The maximum effective length of the steering tube is greater than the effective length of the fork steerer tube and base and the steering tube is slidable into different axial positions relative to the base and fork steerer tube to facilitate different handle bar heights for riding and the steering tube is slidable downwards so that the handlebar assembly approaches the base and substantially all of the steering tube is stowed within or below the fork steerer tube for at least one of transport and storage.

Abstract: An apparatus including a frame; a drive wheel coupled to the frame; first and second foot links operably coupled to said drive wheel to transfer power to said drive wheel so as to propel the apparatus; and each of said first and second foot links including a pivoting foot platform for receiving an operator's foot, said pivoting foot platform pivotally coupled to one of said first and second foot links so as to allow angular travel of the pivoting foot platform, the apparatus including one or more features to limit the angular travel of said pivoting foot platform.

Abstract: A rotational bearing has an outer surface and an outer layer attached to the outer surface of the bearing by overmolding, bonding or mechanical fasteners. The outer layer has an outer surface which rotatably engages a bearing surface of a track along which the bearing device is adapted to travel, and is of a material softer than the material of the track bearing surface, such as a polymer or a relatively soft metal. In one example, the bearing is rotatably attached to a foot link carrying a foot engaging platform of a human powered conveyance or exercise system.

Abstract: An apparatus including a frame with a pivot axis defined thereupon; a drive wheel coupled to the frame; a first and a second foot link operably coupled to drive wheel to transfer power to the drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and an adjustable stride length mechanism coupling the rear end of the foot link to the pivot axis at a radial length, the adjustable stride length mechanism including a plurality of attachment points for adjusting the radial length.

Abstract: An apparatus including a frame with a pivot axis defined thereupon, a crank arm bearing at the pivot axis; a first and a second crank arm coupled to the crank arm bearing; at least two wheels coupled to the frame, at least one of which is a drive wheel; a first and a second foot link, operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each foot link including a foot receiving portion for receiving a user's foot, a first end coupled to the frame, and a second end coupled to a respective one of the first and the second crank arms, wherein the foot receiving portion is movable along a generally elliptical path having a stride length greater than 17 inches.

Abstract: A foldable steering column of vehicle including a steering member with a steering fork. The foldable steering column includes a base coupleable to the steering fork; a steering tube pivotally coupled to the base between at least a first position aligned with the base and second position not aligned with the base; and a sleeve operably associated with the base and the steering tube for positioning between a first position where the steering tube is secured to and aligned with the base and a second position where the steering tube is free to pivot relative to the base.

Abstract: An apparatus including a frame; a drive wheel coupled to the frame; a first and a second foot link operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and an adjustable stride length mechanism operable to change a stride length of an operator's foot positioned on the foot receiving portion of the foot link.

Abstract: An apparatus includes a frame with a pivot axis defined thereupon; a drive wheel coupled to the frame; a first and a second foot link operably coupled to the drive wheel to transfer power to the drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and a pair of internal guide track systems coupled to the frame, each internal guide track system being operative to engage the front end of each foot link internal to the internal guide track system and to direct the front end along a reciprocating path of travel while providing retention to each foot link.

Abstract: A rotational bearing has an outer surface and an outer layer attached to the outer surface of the bearing by overmolding, bonding or mechanical fasteners. The outer layer has an outer surface which rotatably engages a bearing surface of a track along which the bearing device is adapted to travel, and is of a material softer than the material of the track bearing surface, such as a polymer or a relatively soft metal. In one example, the bearing is rotatably attached to a foot link carrying a foot engaging platform of a human powered conveyance or exercise system.

Abstract: An apparatus including a frame; a drive wheel coupled to the frame; a first and a second foot link, operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and a first and a second foot link guide track, each foot link guide track operatively associated with the front end of the foot link to direct the front end along a reciprocating path of travel while providing retention to the foot link.

Abstract: An apparatus including a frame with a pivot axis defined thereupon, a crank arm bearing at the pivot axis; a first and a second crank arm coupled to the crank arm bearing; at least two wheels coupled to the frame, at least one of which is a drive wheel; a first and a second foot link, operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each foot link including a foot receiving portion for receiving a user's foot, a first end coupled to the frame, and a second end coupled to a respective one of the first and the second crank arms, wherein the foot receiving portion is movable along a generally elliptical path having a stride length greater than 17 inches.

Abstract: An apparatus includes a frame with a pivot axis defined thereupon; a drive wheel coupled to the frame; a first and a second foot link operably coupled to drive wheel to transfer power to said drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and a pair of internal guide track systems coupled to the frame, each internal guide track system being operative to engage the front end of each foot link internal to the internal guide track system and to direct said front end along a reciprocating path of travel while providing retention to each foot link.

Abstract: An apparatus including a frame with a pivot axis defined thereupon; a drive wheel coupled to the frame; a first and a second foot link operably coupled to drive wheel to transfer power to the drive wheel so as to propel the apparatus, each including a foot receiving portion for receiving an operator's foot, a front end, and a rear end; and an adjustable stride length mechanism coupling the rear end of the foot link to the pivot axis at a radial length, the adjustable stride length mechanism including a plurality of attachment points for adjusting the radial length.

Abstract: A foldable steering column of vehicle including a steering member with a steering fork. The foldable steering column includes a base coupleable to the steering fork; a steering tube pivotally coupled to the base between at least a first position aligned with the base and second position not aligned with the base; and a sleeve operably associated with the base and the steering tube for positioning between a first position where the steering tube is secured to and aligned with the base and a second position where the steering tube is free to pivot relative to the base.