Collapsible Recumbent Tricycle

A method for converting a collapsible tricycle from a travel configuration into a folded configuration,

• the collapsible tricycle comprising a spine frame having a spine supported by a rear wheel and by a pair of steerable front wheels,
• a pedal boom extending forwardly of the spine and supporting a pedal crank assembly,
• a seat supported by the spine;
• wherein the front wheels each support a lateral arm having a proximal end and a distal end with the front wheel pivotably attached at the distal end, and
• a pivot at the proximal end connects each lateral arm to the spine a pivot between the pedal boom and the spine allows the pedal boom to fold back against the spine in a stowed position, and
• the seat has a base portion and a rear portion,
• and the tricycle has a seat pivot in the seat rear portion, and
• a weight bearing bracket projecting from the seat base portion which engages with bracket supports on the spine;
• and a locking device on the spine arrests the seat during tricycle travel, and releases the seat to raise and thereby allow the pedal boom to be stowed under the seat;
• wherein the method includes the following steps:—
• loosening the locking device,
• pivoting the seat upwards,
• folding the front wheels and pedal boom against the spine,
• lowering the seat over the pedal boom.

A collapsible tricycle comprising a spine frame having a spine supported by a rear wheel and by a pair of steerable front wheels,

• the spine having a forward end and a rear end,
• a pedal boom extending forwardly of the spine and supporting a pedal crank assembly,
• a drive system connecting the pedal crank assembly with the rear wheel, and a seat supported by the spine;
• wherein the front wheels each support a lateral arm having a proximal end and a distal end with the front wheel pivotably attached at the distal end, and
• the proximal end connected to the spine,
• wherein the spine frame includes one or more chainstays, each chainstay having a proximal end and a distal end,
• with the proximal end of each chainstay pivotably attached by a chainstay pivot to the rear end of the spine and the rear wheel attached to the distal end of each chainstay,
• and the chainstay pivot is oriented to allow the chainstays to fold forward and the rear wheel to tilt from a vertical position to a stowed position lying transversely across the tricycle adjacent the front wheels and under the spine.