A compactable vehicle is provided. The vehicle includes a body, a steering assembly coupled to the body, and a seating assembly coupled to the body. The steering assembly includes a wheel assembly, an elongated structure retractably coupled to the body, and a handlebar. The elongated structure includes a first end, a second end coupled to the wheel assembly, and a slot that extends between the first end and the second end. The handlebar is pivotally disposed in the slot. The seating assembly includes a support member retractably coupled to the body and a seat pivotally coupled to the support member.

A compactable vehicle is provided. The vehicle includes a body, a steering assembly coupled to the body, and a seating assembly coupled to the body. The steering assembly includes a wheel assembly, an elongated structure retractably coupled to the body, and a handlebar. The elongated structure includes a first end, a second end coupled to the wheel assembly, and a slot that extends between the first end and the second end. The handlebar is pivotally disposed in the slot. The seating assembly includes a support member retractably coupled to the body and a seat pivotally coupled to the support member.

A split handlebar assembly for an aerodynamic bicycle having a handlebar stem for attaching said split handlebar assembly, comprising a right handlebar and a left handlebar; the right handlebar having a mounting section at one end, and a right grip section at the other end; the left handlebar having a mounting section at one end, and a left grip section at the other end; the right handlebar mounting section being configured to engage with the left handlebar mounting section; and the engaged mounting sections being configured to secure the right handlebar and the left handlebar to the handlebar stem.

A split handlebar assembly for an aerodynamic bicycle having a handlebar stem for attaching said split handlebar assembly, comprising a right handlebar and a left handlebar; the right handlebar having a mounting section at one end, and a right grip section at the other end; the left handlebar having a mounting section at one end, and a left grip section at the other end; the right handlebar mounting section being configured to engage with the left handlebar mounting section; and the engaged mounting sections being configured to secure the right handlebar and the left handlebar to the handlebar stem.

A roller board device like a skateboard or scooter operated by a user with one or more user-maneuverable wheel assemblies that are automatically returned to their true north position is provided according to the invention. The roller board device comprises an elongated deck, at least one wheel assembly, a rotation assembly operatively engaging and extending through the opening in the deck, one end of the rotation assembly being connected to the wheel assembly positioned below the deck, the other end of the rotation assembly being connected to a user interface member extending upward beyond the top surface of the deck, and a north-seeking return mechanism secured to the deck containing an engagement member movable along a linear axis within a housing and engaging a spring disposed between the engagement member and an interior wall of the housing, the rotation assembly operatively connected to the engagement member to convert rotational movement of the rotation member into linear movement of the engagement member. When the user applies rotational force to the user engagement member to turn it to the left or right, the rotation assembly and wheel assembly are rotated in the same direction and degree to allow the roller board device to be turned, the rotated rotation assembly interacting with the engagement member of the north-seeking return mechanism to move the engagement member along its linear axis to a retracted position to compress the spring. But, when the user releases the rotational force upon the user interface member, the spring extends from its compressed state to its elongated state to move the engagement member of the north-seeking return mechanism back along the linear axis from its retracted position to its standby position, counter interacting with the rotation assembly to return the wheel assembly of the roller board device to its true north position.

A roller board device like a skateboard or scooter operated by a user with one or more user-maneuverable wheel assemblies that are automatically returned to their true north position is provided according to the invention. The roller board device comprises an elongated deck, at least one wheel assembly, a rotation assembly operatively engaging and extending through the opening in the deck, one end of the rotation assembly being connected to the wheel assembly positioned below the deck, the other end of the rotation assembly being connected to a user interface member extending upward beyond the top surface of the deck, and a north-seeking return mechanism secured to the deck containing an engagement member movable along a linear axis within a housing and engaging a spring disposed between the engagement member and an interior wall of the housing, the rotation assembly operatively connected to the engagement member to convert rotational movement of the rotation member into linear movement of the engagement member. When the user applies rotational force to the user engagement member to turn it to the left or right, the rotation assembly and wheel assembly are rotated in the same direction and degree to allow the roller board device to be turned, the rotated rotation assembly interacting with the engagement member of the north-seeking return mechanism to move the engagement member along its linear axis to a retracted position to compress the spring. But, when the user releases the rotational force upon the user interface member, the spring extends from its compressed state to its elongated state to move the engagement member of the north-seeking return mechanism back along the linear axis from its retracted position to its standby position, counter interacting with the rotation assembly to return the wheel assembly of the roller board device to its true north position.

A vehicle is configurable between an expanded arrangement and a folded arrangement. A front wheel is rotatably and removably mounted in a front fork at a front axle. A front wheel quick release skewer configured to couple the front wheel to and decouple the front wheel from the front fork. A main frame has a head tube configured to receive the front fork and a seat tube distal therefrom. A rear wheel assembly includes a rear wheel carrier pivotably coupled with the seat tube and selectively coupled with the seat tube by seat stays. A quick release clamp is configured to enable selective pivoting of the handlebar relative to a steering tube about a pivot axis of steering tube hinge. A rear wheel carrier mount is provided to the rear wheel carrier and is configured for removable coupling of the front axle with the front wheel removed from the front fork.

A vehicle is configurable between an expanded arrangement and a folded arrangement. A front wheel is rotatably and removably mounted in a front fork at a front axle. A front wheel quick release skewer configured to couple the front wheel to and decouple the front wheel from the front fork. A main frame has a head tube configured to receive the front fork and a seat tube distal therefrom. A rear wheel assembly includes a rear wheel carrier pivotably coupled with the seat tube and selectively coupled with the seat tube by seat stays. A quick release clamp is configured to enable selective pivoting of the handlebar relative to a steering tube about a pivot axis of steering tube hinge. A rear wheel carrier mount is provided to the rear wheel carrier and is configured for removable coupling of the front axle with the front wheel removed from the front fork.

A bicycle handlebar stem assembly includes a connecting base having a tightening portion sleeved on a front fork stem and a pivot portion connected to the tightening portion, a handlebar base pivoted to the pivot portion and having an opening, a handlebar hole communicating with the opening for penetration of a handlebar, and an accommodation space communicating with the opening, an elastic member disposed in the accommodation space and contacting with the connecting base and the handlebar base, and an adjustment component having one end pressing the elastic member to adjust the pre-pressure state of the elastic member, and the other end with an axial direction staggered from the handlebar and passing through the opening. Thus, a rider can adjust the adjustment component to change the pressing force applied to the elastic member without removing the handlebar, thereby achieving different shock-absorbing effects.

A bicycle handlebar stem assembly includes a connecting base having a tightening portion sleeved on a front fork stem and a pivot portion connected to the tightening portion, a handlebar base pivoted to the pivot portion and having an opening, a handlebar hole communicating with the opening for penetration of a handlebar, and an accommodation space communicating with the opening, an elastic member disposed in the accommodation space and contacting with the connecting base and the handlebar base, and an adjustment component having one end pressing the elastic member to adjust the pre-pressure state of the elastic member, and the other end with an axial direction staggered from the handlebar and passing through the opening. Thus, a rider can adjust the adjustment component to change the pressing force applied to the elastic member without removing the handlebar, thereby achieving different shock-absorbing effects.