Hydraulically driven electrically powered vehicle with energy recapture
Patent 5064013 Issued on November 12, 1991. Estimated Expiration Date: 
November 29, 2010. 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.
November 29, 2010. 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 References 2918982 3828880 Positive hydraulic direct drive for vehicles Regenerative energy transfer system Electro-mechanical-hydraulic power generating system Hydraulic wheel motor and pump Radial vane hydraulic machine Patent #: 4947646 InventorApplicationNo. 620362 filed on 11/29/1990US Classes:180/65.3, With means on vehicle for generating power for the electric motor60/484, Having plural energy outputs (e.g., plural motors, etc.)180/65.5, With motor in or moveable with wheel180/242, Including pump and fluid motor, or generator and electric motor, for driving one or more wheels180/308Having separate motor for each driven, surface-engaging memberExaminersPrimary: Kashnikow, AndresAssistant: Mar, Michael Attorney, Agent or FirmInternational ClassB60K 001/04AbstractThe present invention provides an electrically powered, hydraulic drive system for a vehicle, with the capability of being recharged with electrical energy from vehicle momentum, utilizing the hydraulic drive system. The power for the electric motor, which drives the vehicle wheels through a hydraulic rotator, is obtained from an energy storage device, which can be recharged by recapturing vehicle kinetic energy during braking of the vehicle, through an electric generator which is linkable to the hydraulic rotator. The hydraulic system includes a central hydraulic rotator driven by the electric motor or driving the generator, and satellite rotators driving the wheels, including dirigible front wheels.Field of SearchWith control means for structure storing work driving energy (e.g., accumulator, etc.)Having plural energy outputs (e.g., plural motors, etc.) Unit having coaxial rotary output shafts and pump means in a common housing (e.g., automobile differential, etc.) WITH FLUID OR MECHANICAL MEANS TO ACCUMULATE ENERGY (I) DERIVED FROM MOTION OF VEHICLE OR (II) OBTAINED FROM OPERATION OF VEHICLE MOTOR, AND GIVE UP THE ENERGY (1) WHEN NEEDED FOR VEHICLE ACCELERATION OR (2) TO POWER AN AUXILIARY SYSTEM OF THE VEHICLE Having separate motor for each driven, surface-engaging member With means on vehicle for generating power for the electric motor Including pump and fluid motor, or generator and electric motor, for driving one or more wheels With motor in or moveable with wheel Including traction motor of kind driven by noncompressible fluid received under pressure from a pump And assemblies for each of two wheels at other end, also Electric | |
