Abstract: A system for maintaining battery cycle life for motorized battery-powered electric vehicles. Current battery-powered electric vehicles such as automobiles and trucks suffer from short cycle life of their batteries, meaning that these vehicles' batteries will become unusable well before reaching the normal useful life of combustion engine powered vehicles. Owners of vehicles using my system will enjoy vehicles with acceptable ranges, acquisition and operating costs, yet will enjoy battery lifetimes as long or as longer than the useful life of combustion engine vehicles.

Abstract: A vehicular propulsion system is described that uses a plurality of direct current (DC) motors operatively attached to a common drive shaft or shafts of an electric vehicle (EV) or boat. Each motor is powered separately by direct current from a battery cassette or trays swappably inserted into the chassis of the vehicle. The battery cassettes are secured in racks, with one or more individual battery cassettes connected to each of individual motors. The individual battery cassettes are sized to have a weight suitable so as to be readily swapped out as needed for recharging, maintenance or replacement, enabling vehicle range to be extended en route by exchanging depleted battery cassettes for new batteries whenever needed. DC motors may be selected to obtain efficiencies greater than obtainable with AC motors, but require no expensive inverter unit.

Abstract: A vehicular propulsion system is described that uses a plurality of direct current (DC) motors operatively attached to a common drive shaft or shafts of an electric vehicle (EV) or boat. Each motor is powered separately by direct current from a battery cassette or trays swappably inserted into the chassis of the vehicle. The battery cassettes are secured in racks, with one or more individual battery cassettes connected to each of individual motors. The individual battery cassettes are sized to have a weight suitable so as to be readily swapped out as needed for recharging, maintenance or replacement, enabling vehicle range to be extended en route by exchanging depleted battery cassettes for new batteries whenever needed. Air cooling is enabled by use of the smaller battery cassettes and smaller motor assemblies. The torque of the smaller motors, operating on a common drive shaft, is additive according to a first embodiment in which a set of like motors are supplied.

Abstract: A computing machine, methods and devices for operating a data ferry as a secure data link from a secured computer not connected to a WAN network to a browser computer with Internet connectability, in which the two computers share a housing and connections to shared peripherals. The secured computer can distribute “disposable” copies of data files and programs via the browser computer over an unsecure network without the risks of data sharing and collaboration via the Internet. The data ferry is essentially a unidirectional databus configured for transmitting data, files, images and executable code from the primary computer to the buffer computer. In a preferred embodiment, a shared monitor and circuit-switched router can be used for example for videoconferencing or browser input in an unsecured computing environment while also referencing and editing secured documents at the same time in a secured computing environment.