Infant stroller safely propelled by a DC electric motor having controlled acceleration and deceleration
Patent 6148942 Issued on November 21, 2000. Estimated Expiration Date: 
October 22, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 22, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 177072 filed on 10/22/1998US Classes:180/65.6, With gearing between electric motor and drive wheel180/65.8, With electronic devices (logic gates, semi-conductors, vacuum tubes, etc.) in control circuit188/69, Positive lock192/15, Automatic check and release192/17RPeripheral brakeExaminersPrimary: Mar, MichaelAttorney, Agent or FirmInternational ClassesB62B 009/08B60K 001/00 AbstractA self-propelled motorized infant stroller powered by DC electric motors with safely controlled acceleration and deceleration. As a discrete safety function, the controlled acceleration and deceleration prevents the child occupant from lurching, either forward or backward, upon the starting or stopping of the baby carriage. A single speed control dial establishes the setting of the desired traversing speed. The propulsion system is safely controlled through the use of a set of dual handle switches that both must be simultaneously depressed to start the propulsion system. A safety seat harness is used to protect the infant occupant from sliding or climbing out of the carriage seat. Additional safety is provided by a parking brake system to prevent accidental propulsion or any unforeseen stroller movement, particularly when stopped on an inclined surface.Field of SearchWith gearing between electric motor and drive wheelElectric With motor in or moveable with wheel MANUALLY ACTUATED CONTROLLING DEVICES With particular gear structure MOTORIZED WHEELCHAIRS Spiral type element With electronic devices (logic gates, semi-conductors, vacuum tubes, etc.) in control circuit Occupant seating type (e.g., baby carriages) Three- or four-wheeled chair, baby carriage, or stroller Wheels attached to lower end of handle frame Wheeled chair, stroller, or baby carriage Chair or stroller for seated occupant Clutch and brake same member Peripheral brake Crank control Transmission control affects brake Brake control affects transmission change Automatic check and release Children's carriages Positive lock Positive lock | |
