Bicycle outrigger support assembly

A bicycle outrigger support assembly for use with a bicycle of the type having a frame formed with a central tube with forward and rearward ends, front and rear wheels coupled to the frame, handle bars coupled to and extending upwardly from the frame, pedals secured to and extending laterally from the tube adjacent to the forward end of the tube, a drive chain operatively coupling the pedals and the rear wheel, a seat mounted on the tube between the front and rear wheels, the outrigger support assembly comprising:

• two outrigger wheels positioned on opposite sides of the frame and the front and rear wheels;
• a support structure on each side of the frame, each structure having an interior end coupled to the frame and an exterior end with an outrigger wheel rotatably supported on an associated exterior end;
• a hinge on each support structure, the hinges adapted to move simultaneously between a lowered orientation with the outrigger wheels closely spaced from ground and a raised orientation with the outrigger wheels distantly spaced from the ground;
• a control handle coupled to the tube beneath the seat, additional links, each additional link having an upper end operatively coupled to the handle and a lower end operatively coupled to the support structure whereby the control handle is adapted to be manipulated to move the additional links and, in response thereto, to move the outrigger wheels between the raised and lowered orientations;
• the control assembly including upper links pivotable about an upper horizontal axis with the control handle, lower links pivotable about a lower axis with the support structure, the upper links having forward extents and rearward extents, the lower links having forward extents and rearward extents;
• the upper ends of the additional links operatively coupled to the rearward extents of the upper links, the lower ends of the additional links operatively coupled to the rearward extents of the lower links, whereby the control handle is adapted to be manipulated to move the additional links and, in response thereto, to move the outrigger wheels between the raised and lowered orientations;
• and
• an emergency assembly including essentially fixed plates (104) with inverted U-shaped connectors (106) reciprocable with respect to the fixed plates, upper lines connecting the U-shaped connectors to the forward ends of the upper links, lower lines connecting the fixed plates to the forward ends of the lower links, the plates having tapered edges (108) with lower recesses (110), pivot arms (112) having upper ends coupled to the U-shaped connectors, the pivot arms having lower ends with rollers (114) rotatable against the edges, essentially horizontal elastic elements (116) tending to pull the pivot arms together, the emergency assembly being quiescent during normal operations and riding, the emergency assembly being activated during abnormal operations as when an outrigger wheel hits an obstruction to stretch the elastic elements and flex the additional links and raise the outrigger wheels without manipulation of the handle.

A recumbent bicycle outrigger support system (10) for providing selectively retractable rearward outrigger wheels on a recumbent bicycle and for elevating the outrigger rear wheels upon accidentally striking an obstacle, the providing and the elevating being achieved in a safe, reliable, convenient and economical manner, the system comprising, in combination:

• a frame (14) including a central tube (16) in a generally horizontal orientation and having a forward end (18) and a rearward end (20), the frame including a generally vertically oriented frame clevis with an upper extent (22) and a lower extent (24) and a central extent (26), a front wheel (28) supported at the lower extent of the clevis for rotation about a horizontal axis, the clevis having a central extent supported by the tube adjacent to the forward end for rotation about a generally vertical axis, the frame including laterally spaced brackets (30) depending from the central tube adjacent to the rearward end, a rear wheel (32) supported at the lower end of the brackets for rotation about a horizontal axis;
• handle bars (36) secured to and extending upwardly from the upper extent of the clevis, the handle bars adapted to be held and rotated to change the direction of the movement of the system;
• pedals (40) secured to and extending laterally from the tube adjacent to the forward end of the tube, the pedals being mounted for rotational movement about a horizontal axis parallel with the axes of the front and rear wheels;
• a drive chain (44) operatively coupling the pedals and the rear wheel whereby rotation of the pedals causes rotation of the rear wheel;
• a seat (48) mounted on the tube between the rear wheel rearwardly and the clevis and the front wheel forwardly;
• two outrigger wheels (52) positioned on opposite sides of the frame and rear wheel, the outrigger wheels each having a diameter between 10 and 25 percent of the diameter of the rear wheel;
• support structures (56) with one structure on each side of the frame and the rear wheel, each structure having an interior end (58) coupled to the frame adjacent to the rear wheel, each structure having an exterior end (60) with an outrigger wheel rotatably supported on an associated exterior end, each structure having a hinge (62), the hinges adapted to move simultaneously between a lowered orientation with the outrigger wheels between 0.5 and 2.5 inches from ground and a raised orientation with the outrigger wheels between 5.0 and 10 inches above ground;
• a control handle (66) coupled to the tube beneath the seat, the control handle having a fixed component (68) and a pivotable component (70) rotatable about a generally vertical axis upon squeezing together the fixed and pivotable components, a spring tending to separate the fixed and pivotable components, a pivot rod (72) for oscillating the control handle about a generally horizontal axis for raising the control handle to raise the outrigger wheels and for lowering the control handle to lower the outrigger wheels, a locking pin (74) secured to the pivotable component, an arcuate locking plate (75) with an upper recess (76) and a lower recess (78), the locking pin positionable in the upper recess to hold the outrigger wheels in the raised orientation, the locking pin positionable in the lower recess to hold the outrigger wheels in the lowered orientation, the locking pin adapted to be withdrawn from the recesses and moved when the fixed and pivotable components are squeezed together;
• a control assembly (82) on opposite sides of the frame coupling the control handle and the outrigger wheels, the control assembly including upper links (84) pivotable about an upper horizontal axis with the control handle, sleeve (77) and bolt (79) rotatable in the frame beneath the bracket for concurrent rotation of the control handle with the two upper links (84), the control assembly including lower links (86) pivotable about a lower axis with the support structures, the links having forward extents and rearward extents, additional links (88) having upper ends operatively coupled to the rearward extents of the upper links, the additional links having lower ends operatively coupled to the rearward extents of the lower links, whereby the control handle is adapted to move the additional links and, in response thereto, to move the outrigger wheels between the raised and lowered orientations;
• and
• an emergency assembly on opposite sides of the frame including elastic elements (92), the elastic elements having upper ends coupled to the forward ends of the upper links, the elastic elements having lower ends coupled to the forward ends of the lower links, the emergency assembly being quiescent during normal operations and riding, the emergency assembly being activated during abnormal operations as when an outrigger wheel hits an obstruction to stretch the elastic elements and flex the additional links and raise the outrigger wheels without manipulation of the handle.