...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8136454 | Battery-powered all-electric locomotive and related locomotive and train configurations Designs for a battery-powered, all-electric locomotive and related locomotive and train configurations are disclosed. In one particular exemplary embodiment, a locomotive may be driven by a plurality of traction motors powered exclusively by a battery assembly which... | 03/20/2012 |
| 8117969 | Hydrogen fuel cell hybrid locomotives A hydrogen hybrid locomotive including a set of batteries for driving a plurality of electric traction motors for moving the locomotive along a set of railroad rails and a fuel cell power plant for charging the set of batteries and driving the electric traction moto... | 02/21/2012 |
| 7971538 | Power management systems for hydrogen hybrid locomotives and hydrogen hybrid locomotives using the same A hydrogen hybrid locomotive including traction motors for moving the locomotive along a set of tracks, a set of batteries for providing electrical power to the traction motors, a hydrogen fuel cell power plant for charging the set of batteries, an air system having... | 07/05/2011 |
| 7661370 | Design of a large low maintenance battery pack for a hybrid locomotive The present invention is directed to systems for prolonging battery life, such as maintaining battery cell temperatures in battery packs within specified limits, providing vibration and shock resistance, and/or electrically isolating groups of batteries from nearby ... | 02/16/2010 |
| 7402982 | Energy storage type feeder voltage compensation apparatus and method of controlling feeder voltage An energy saving type feeder voltage compensation apparatus improved in availability at low temperatures, wherein when a secondary battery is lower in temperature than a predetermined value, an output voltage output to a feeder side is made equal to or higher than a... | 07/22/2008 |
| 7336000 | Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine A speed monitor for establishing a lower threshold and an upper threshold for a speed of a rotor or shaft of a turbogenerator. A speed detector detects speed data or a speed signal for a rotor or shaft associated with a turbogenerator. A turbogenerator controller co... | 02/26/2008 |
| 7325498 | Hybrid energy off highway vehicle propulsion circuit A system and method for retrofitting a propulsion circuit of an existing Off Highway Vehicle to enable the propulsion circuit to operate as a hybrid energy Off Highway Vehicle propulsion circuit. The hybrid propulsion circuit includes a primary power source, and a t... | 02/05/2008 |
| 7231877 | Multimode hybrid energy railway vehicle system and method A hybrid energy railway vehicle system having a traction motor with a dynamic braking mode of operation for dynamically braking the traction motor and for generating dynamic braking electrical energy and an electrical energy storage system that is in electrical comm... | 06/19/2007 |
| 7190133 | Energy storage system and method for hybrid propulsion A hybrid propulsion system. The system comprises one or more hybrid propulsion traction drives having an electric motor operable to produce mechanical power for propulsion. A hybrid propulsion traction drive is operable to receive power from an on-board power genera... | 03/13/2007 |
| 7185591 | Hybrid energy off highway vehicle propulsion circuit A system and method for retrofitting a propulsion circuit of an existing Off Highway Vehicle to enable the propulsion circuit to operate as a hybrid energy Off Highway Vehicle propulsion circuit. The hybrid propulsion circuit includes a primary power source, and a t... | 03/06/2007 |
| 7137344 | Hybrid energy off highway vehicle load control system and method A system and method for managing electrical power generated by an engine for use in connection with operating a hybrid energy off highway vehicle load control system. A load control circuit determines a current operating condition of the Off Highway Vehicle, and det... | 11/21/2006 |
| 7124691 | Method for monitoring and controlling locomotives The present invention is directed to a locomotive comprising energy storage units, such as batteries, a prime energy source, such as a diesel engine, and an energy conversion device, such as a generator. The locomotive comprises one or more of the following features... | 10/24/2006 |
| 6973880 | Hybrid energy off highway vehicle electric power storage system and method An electrical energy capture system for use in connection with a hybrid energy off highway vehicle system of a off highway vehicle. The hybrid energy off highway vehicle system includes an off highway vehicle, a primary power source, and an off highway vehicle tract... | 12/13/2005 |
| 6938553 | Battery box for railway vehicle A receiving connector 6A and upper and lower guide sockets 7 are mounted on an attachment 9, and the attachment 9 is mounted on a casing 3A by way of a bolt member 16 so that positioning of the attachment 9 is adjusta... | 09/06/2005 |
| 6591758 | Hybrid energy locomotive electrical power storage system A hybrid energy locomotive system having an energy storage and regeneration system. In one form, the system can be retrofitted into existing locomotives, or installed as original equipment. The energy storage and regeneration system captures dynamic braki... | 07/15/2003 |
| 6308639 | Hybrid battery/gas turbine locomotive Prior battery-powered electric locomotives have used multiple diesel engines to charge the batteries and have not been commercially accepted. The present invention provides a yard switcher which combines battery storage with a gas microturbine generator t... | 10/30/2001 |
| 5768876 | Bobbin transport systems A drive unit for driving one or more bobbin carriers along a track of a bobbin transport system, comprises track engaging elements for engaging with the track and allowing the drive unit to travel along the track, a detector for detecting position indicat... | 06/23/1998 |
| 5115747 | Free transfer machine with independent motorized carriages and battery recharging at work stations The present invention relates to a free transfer machine equipped with independent motorized carriages. Each carriage comprises a variable speed motor, a rechargeable battery connected to contact blocks, and an individual travelling control system compris... | 05/26/1992 |
| 4987833 | Solar induction monorail apparatus and method A transportion system including a solar energy collecting monorail structure formed with a photovoltaic surface layer having a solar energy converting means for converting the collected solar energy to electrical energy. A power distribution means for dis... | 01/29/1991 |
| 4817533 | Transportation system of floated-carrier type A transportation system of a floated-carrier type according to the present invention has a guide rail cover extending in a longitudinal direction. The guide rail cover comprises a guide rail. A carrier is made to float, in a non-contact manner, from the g... | 04/04/1989 |
| 4781119 | Solar-rapid rail mass transit system A solar-powered rapid transit system is provided, which travels suspended above ground along a horizontal rail, supported by vertical/horizontal supports. The guide rail is basically a parallelogram, with five inner surfaces. It can be configured as eithe... | 11/01/1988 |
| 4570543 | Conveying equipment Conveying equipment provided with a conveying vehicle guided by a single overhead rail without the necessity of an auxiliary rail due to the wheel and vehicle body unit construction which enables stable running of the vehicle. The equipment of the inventi... | 02/18/1986 |
| 4417523 | Rideable motor-driven toy train An electric motor driven toy train is disclosed which comprises multiple cars, each of which is articulated about a vertical axis and each of which has only a single axle so as to minimize the turning radius of the train set. A child sits upon the second ... | 11/29/1983 |
| 4357877 | Toy train An electric motor driven toy train is disclosed which has a novel wheel and track assembly for minimizing slippage and avoiding binding between the train's wheels and the track as the train goes around a curve section of the track. The train's wheels are ... | 11/09/1982 |
| 4258816 | Installation for the accommodation of an interchangeable energy-storage device in a motor vehicle An installation for the accommodation, insertion and removal of an energy-storage device, preferably, an electric battery, in a motor vehicle which has a special area for accommodating the energy-storage device. Connections are provided in the accommodati... | 03/31/1981 |
| 4212250 | Mine locomotive A personnel carrier for use in an underground coal mine comprises a rail vehicle having driving cabs at opposite ends thereof with driving controls in each cab. Power is supplied from a battery mounted between the cabs to an electric driving motor arrange... | 07/15/1980 |
| 4090577 | Solar celled hybrid vehicle A front wheel driven, gas powered vehicle is converted to include a rear differential connected for power input to a first and second electrical motor, or a single electric motor if desired. When first and second electrical motors are used they are connec... | 05/23/1978 |
| 4058182 | Electrically driven vehicle, especially passenger motor vehicle An electrically driven vehicle, especially a passenger motor vehicle with an electric power source taken along in the vehicle which is arranged in the area of the vehicle floor and is connected therewith by way of mounting supports, whereby the latter are... | 11/15/1977 |
| 3930552 | Motor vehicle battery holder A motor vehicle has an enclosed battery storage compartment with a door separating the compartment from an adjacent support surface that has been roughened to reduce slippage of persons stepping thereon. A battery holder has a mounting base in the compart... | 01/06/1976 |