Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7081735 | System and method for bypassing a motor drive A motor control system comprising a plurality of motor controllers and a power source adapted to drive an electric motor. The motor control system comprises a switch that is selectively operable between at least a first position and a second position. In the first p... | 07/25/2006 |
| 6691749 | Service coupling This invention relates to a service coupling for coupling a vehicle to a service port such that one or more services are transferable therebetween. The coupling comprises a plug comprising at least one service engagement portion; and a receptacle comprisi... | 02/17/2004 |
| 6646360 | System, method and apparatus for connecting electrical sources in series under full load A circuit connects a low-voltage high-current DC power source (PL) in series with a high-voltage low-current DC source (PD). The series connection is made under full power by using the second source PL to commutate the loa... | 11/11/2003 |
| 6619342 | Wheel stop service port This invention relates to a wheel stop service port for coupling to a connectivity device of a wheeled vehicle such that one or more services, namely electricity, data, and fluids, are transferable therebetween. The service port includes a housing having ... | 09/16/2003 |
| 6557476 | System for supplying power to electrically propelled vehicles A power supply system for an electrically propelled vehicle equipped with electric traction motors and including an autonomous power supply system which can be recharged on board the vehicle for supplying power to the electric traction motors. At least on... | 05/06/2003 |
| 6439275 | Automatic connection system and method An automatic connection system provides for the transfer of energy, gas or liquid fuel between two units of which at least one can be mobile. The system has one transfer part or cable which is at least partially elastic and at least partially rigid and a ... | 08/27/2002 |
| 6431081 | Method and apparatus for ventilating electrical equipment on board a rail vehicle Apparatus for ventilating electrical equipment on board a rail vehicle, said rail vehicle being powered with DC either directly by an electricity pick-up system connected to a DC source, or indirectly by rectifying and filtering electricity picked up by a... | 08/13/2002 |
| 6087739 | Train set and an electrically powered train including such a set A train set includes a plurality of cars each having a flat designed to receive storage units equipped electrically-powered equipment. The train set includes: a connector for connecting the set to an electricity source which delivers electrical power at a... | 07/11/2000 |
| 5701980 | Power supply device for an electromotive railcar A power supply device for an electromotive railcar is adapted to receive external current from an overhead electric line via a pantograph and to feed driving current of lower voltage than the external current to electric loads in the railcar through first... | 12/30/1997 |
| 5651434 | Battery powered vehicle systems A public service vehicle transport system in which a vehicle powered by sodium/sulphur batteries is recharged through a pantograph at stations along its route from a pylon having arms which carry power conductors. The arms are carried by a rotable part of... | 07/29/1997 |
| 5595271 | Electric vehicle pick-up position control In an electrically powered vehicle having an inductive pick-up configured to couple electrical power from a series of aligned and spaced-apart charging pads associated with a road surface, methods and apparatus are disclosed for controlling the lateral po... | 01/21/1997 |
| 5582262 | Selectively connectable engine for a vehicle having an electric drive motor A drive device has the following components: a connecting device that can be connected to an electric power supply, the connecting device being connected to a power converter; a first drive aggregate in the form of an electrical drive motor which is conne... | 12/10/1996 |
| 5503260 | Conveyor safety assembly The conveyor safety circuit (40) is connected on remotely operated vehicles (12) each having on-board controllers (28) which automatically run along guide rails (18) powered from power rails (20) extending along the guide rails (18). The safety circuit (4... | 04/02/1996 |
| 5351775 | Method for propelling and retarding off-road haulers An improved method and apparatus for powering and controlling the operation of large diesel-electric off-road haulers of the type in which hauler drive wheels are propelled and retarded by DC electric wheel motors powered from on-board generators, optiona... | 10/04/1994 |
| 5334878 | Inverter control for third rail head end power A system provides dual power producing capability to a diesel locomotive. The diesel engine drives the power generating system on the locomotive when the locomotive is operating under normal conditions. An inverter is provided to drive the power generatin... | 08/02/1994 |
| 5332013 | Unmanned conveying device in clean room An unmanned conveying device for a clean room is capable of restraining a spontaneous oxide film from growing in case that an unmanned carriage is obliged to stop for a long time due to its own cause of a cause at a destination spot while it conveys a sem... | 07/26/1994 |
| 5323098 | Power-charging system for transporter cart A power-charging system for a transporter cart is disclosed. The system includes a power-supplying electrode disposed along and at a predetermined section of a travelling passage along which the transporter cart automatically runs by power from a battery ... | 06/21/1994 |
| 5293947 | Variable speed AC electric drive vehicle An externally powered electric vehicle with an on-board variable speed AC drive motor drawing power from an overhead trolley line. The vehicle may include an auxiliary power source in the form of a battery or internal combustion engine for powering the ve... | 03/15/1994 |
| 5103923 | Method and apparatus for propelling and retarding off-road haulers An improved method and apparatus for powering and controlling the operation of large diesel-electric off-road haulers of the type in which hauler drive wheels are propelled and retarded by DC electric wheel motors powered from on-board generators, optiona... | 04/14/1992 |
| 4800328 | Inductive power coupling with constant voltage output A constant voltage inductive power coupling for magnetically transferring electrical power from a power source through an air gap to a load comprising a first electromagnetic inductor connected to a power source to generate a shaped alternating magnetic f... | 01/24/1989 |
| 4795859 | Control device for electric train A control device for an electric train formed of plural coupled carriages each of which receive power from an overhead power line via a collector, wherein each carriage is provided with a power converter for converting power from the overhead line to a su... | 01/03/1989 |
| 4210978 | Automatic carpet cleaning machine An improved self-propelled carpet cleaning machine comprises a body movably mounted by a drive wheel. The body is powered by a drive motor which may be selectively connectable either to an AC power source located separately from the body or to a DC power ... | 07/08/1980 |
| 4129203 | Roadway vehicle Apparatus and a system are provided for a trackless-roadway vehicle having internal and external propulsion energy sources; the external energy being obtained by a collector plow from electric power rails located in a conduit below the roadway. The collec... | 12/12/1978 |
| 4087734 | Charging circuit for combination trolley and battery powered locomotives A battery for a combination battery-trolley wire powered mine locomotive is connected at its positive terminal by a conductor to an energized trolley wire that extends through the mine haulageway. A charging contactor having normally open contacts connect... | 05/02/1978 |
| 4057753 | Train vehicle control apparatus Control apparatus for determining the power regenerating operation of a train vehicle is disclosed in relation to the provision of a control signal in conjunction with the operation of the power supply rail of the train vehicle track, such that power rege... | 11/08/1977 |
| 3971454 | System for generating electrical energy to supply power to propel vehicles Solar radiant energy and high-intensity light are converted to electrical energy to supply electrical power for propelling vehicles in a safe, economical and efficient manner. The radiant energy can be beamed from outer space by the use of satellites with... | 07/27/1976 |
