Differential drive system
OwnerBritt Jackson, Thomas Boyle +1inventors
InventorsBritt Jackson, Thomas Boyle, Percy Chien
Life of this patent
Estimating the term…
Abstract
A differential drive system uses mass produced components to create a multi-speed, automatic transmission like operation while still taking advantage of the economies of scale. The differential drive system couples two motors to a differential through freewheels allowing the most efficient motor use. A pedal chain sprocket is connected to the differential through a mid axle and through a freewheel allowing the pedals to drive both rear axles.
Claims15
An electric vehicle including a differential drive system, the vehicle comprising:
- at least three wheels including a right wheel and a left wheel;
- the right wheel and the left wheel connected to the differential drive system by a right axle and a left axle;
- the differential drive system comprising:
- housing comprising a right housing and a left housing;
- a differential inside the housing;
- a differential gear attached to the differential;
- the right and left axles connected to the differential;
- at least two motors attached to the housing;
- motor shafts of each motor reaching into the housing;
- motor gears residing on the motor shafts, the motor gears inside the housing;
- two mid axles inside the housing;
- motor mid axle gears riding on the mid axles and engaging the motor gears;
- differential mid axle gears riding on the mid axles and engaging the differential gear;
- and
- freewheels rotationally mechanically coupling the motor shafts to the differential when the respective motor is driving the differential.
An electric vehicle including a differential drive system, the vehicle comprising:
- at least three wheels including a right wheel and a left wheel;
- the right wheel and the left wheel connected to the differential drive system by a right axle and a left axle;
- the differential drive system comprising:
- housing comprising a right housing and a left housing;
- a differential inside the housing;
- a differential gear attached to the differential;
- the right and left axles connected to the differential;
- at least two motors attached to the housing;
- motor shafts of each motor reaching into the housing;
- motor gears residing on the motor shafts, the motor gears inside the housing;
- two mid axles inside the housing;
- motor mid axle gears riding on the mid axles and engaging the motor gears;
- differential mid axle gears riding on the mid axles and engaging the differential gear;
- and
- freewheels rotationally mechanically coupling the motor mid axle gears to the mid axles when the respective motor is driving the differential.
An electric vehicle including a differential drive system, the vehicle comprising:
- at least three wheels including a right wheel and a left wheel;
- the right wheel and the left wheel connected to the differential drive system by a right axle and a left axle;
- the differential drive system comprising:
- housing comprising a right housing and a left housing;
- a differential inside the housing;
- a differential gear attached to the differential;
- the right and left axles connected to the differential;
- at least two motors attached to the housing;
- motor shafts of each motor reaching into the housing;
- motor gears residing on the motor shafts, the motor gears inside the housing;
- two mid axles inside the housing;
- motor mid axle gears riding on the mid axles and engaging the motor gears;
- differential mid axle gears riding on the mid axles and engaging the differential gear;
- freewheels rotationally mechanically coupling the motor mid axle gears to the mid axles when the respective motor is driving the differential;
- and
- a pedal sprocket rotationally mechanically coupled to one of the mid axles through a freewheel when the pedal sprocket is driving the respective one of the mid axles.
Dependencies are inferred from the claim text.