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For a baby stroller, an add-on assembly comprises a planar rectangular chassis pivotally attached to the stroller rear axle and carrying on its distal end a drive shaft with wheels. The chassis also mounts an electric motor having a spur gear engaging a ring gear in one of the wheels. At least one s

For a baby stroller, an add-on assembly comprises a planar rectangular chassis pivotally attached to the stroller rear axle and carrying on its distal end a drive shaft with wheels. The chassis also mounts an electric motor having a spur gear engaging a ring gear in one of the wheels. At least one strut is connected at one end to the structure of the stroller well above the axle and at the other end to the rear of the chassis. The strut holds the chassis downward so that the drive wheels engage the pavement, supplanting the stroller rear wheels. Battery and controls for the motor are included.

대표청구항 ▼

1. An add-on drive assembly for a stroller having a U-shaped frame defined by a rear axle having an idler wheel at either end, a pair of spaced upright side elements connected to the axle, and a bridging element spaced above the axle and connected to the respective side elements, the assembly compri

1. An add-on drive assembly for a stroller having a U-shaped frame defined by a rear axle having an idler wheel at either end, a pair of spaced upright side elements connected to the axle, and a bridging element spaced above the axle and connected to the respective side elements, the assembly comprising:a. a planar generally rectangular chassis having a forward edge having pivot connectors adapted to connect to the axle, and a distal edge mounting an electric motor having a horizontal drive shaft parallel to the forward edge with a drive spur gear extending outward from the chassis, b. a controllable electric power source adapted to be supported by the stroller and electrically connected to the motor, c. a horizontal drive wheel shaft mounted on the distal edge of the chassis, d. a drive wheel mounted on an end of the drive wheel shaft, the drive wheel having an internal ring gear meshing with the spur gear, e. a support strut pivotally connected at one end to the distal edge of the chassis and the other end adapted to be connected to the U-shaped frame above the axle.