Motorized stroller with rear wheel drive assembly

Details Motorized stroller with rear wheel drive assembly Motorized stroller with rear wheel drive assembly

1997-06-25

1999-02-23

Oberleitner, Robert J.

Motor vehicles

Power

Electric

180216, 180342, 180907, B60K 700

Patent

active

058734252

ABSTRACT:
The rear wheel drive assembly of a motorized stroller includes a transmission unit, a bidirectional motor, a battery unit and a control unit. The transmission unit includes a gear housing to be mounted on a rear wheel support rod of a stroller frame, and a speed reducing gear set mounted operably in the gear housing. The gear set includes an input gear, an output gear driven rotatably by the input gear, and a knurled roller mounted coaxially on one side of the output gear and extending partially out of an open bottom end of the gear housing. The knurled roller contacts the tire portion of a rear wheel on the support rod such that rotation of the input gear results in corresponding rotation of the knurled roller in order to generate friction between the knurled roller and the rear wheel. The motor is mounted on the gear housing and drives rotatably the input gear. The battery unit includes a battery holder mounted on the stroller frame and adapted to receive a storage battery therein. The control unit is connected electrically to the motor and the electrical contacts on the battery holder, and is operable so as to control direction of rotation of the drive shaft of the motor to control, in turn, forward and backward movement of the stroller frame.

REFERENCES:
patent: 2574824 (1951-11-01), Garelli
patent: 2798565 (1957-07-01), Rosenthal et al.
patent: 3199621 (1965-08-01), Seaman
patent: 3786887 (1974-01-01), Rosenthal et al.
patent: 3978936 (1976-09-01), Schwartz
patent: 4629950 (1986-12-01), Ching
patent: 5542690 (1996-08-01), Kozicki

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