"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7400486 | Grounding device for automated guided vehicles A device and method is provided for use in connection with electrically grounding an automated guided vehicle. A grounding strap is suspended from the automated vehicle for contacting an electrical conductive ground device mounted to a floor along a travel path of t... | 07/15/2008 |
| 7256356 | Apparatus and method for coupling a module assembly in a housing An assembly, such as a sensor assembly, includes an optional housing having an inner surface and an outer surface where the housing includes housing connecting features. The assembly further includes a module assembly with at least one resilient member, and an elong... | 08/14/2007 |
| 7229387 | Apparatus for diverting static electricity away from a treadmill The invention relates to an apparatus for diverting static electricity away from a treadmill. The apparatus includes a diverting apparatus, consisting of a conducting piece, a conductive strip and a connection bolt. The diverting apparatus is mounted on the surface ... | 06/12/2007 |
| 7170735 | Electrostatic discharge system An electrostatic discharge system for a road vehicle including an electrically conducting conductor element in electrical contact with an electrically conducting part of the vehicle body, an actuator mountable to the vehicle and adapted for selectively and reversibl... | 01/30/2007 |
| 6703556 | Mobile lightning protection The present invention provides a method and apparatus for mobile lightning protection. In one embodiment of the present invention, a lightning interception rod is positioned above a vehicle. In one embodiment, the rod connects to four down-conductors to c... | 03/09/2004 |
| 6357767 | Static-dissipative member for wheeled conveyance A wheeled conveyance, such as a shopping cart, a luggage cart, a utility cart, a wheel chair, a gurney, or a tricycle has a metal chassis and wheels, which support the metal chassis above a supporting surface, such as a floor surface, and which may isolat... | 03/19/2002 |
| 6327131 | Grounding apparatus for a cart and method of transportation A transportation apparatus for transporting components (240) sensitive to electrostatic discharge includes an electically conductive cart (220), an electrically conductive pad (231) coupled to the electrically conductive floor to ground the cart, an elect... | 12/04/2001 |
| 6292080 | Electric transformer having superconductive coils An electric transformer comprising a primary coil and a secondary coil each constituted by at least a first coil formed by winding one or more metal-matrix superconductive conductors. The first coil of the primary coil or of the secondary coil is connecte... | 09/18/2001 |
| 5919048 | Engine block heater connector device A device for connecting an external electrical power cord to an engine block heater in an automotive vehicle. The device is permanently mounted in the vehicle grille and includes a flanged electrical inlet whose terminals are hard-wired to the heater, and... | 07/06/1999 |
| 4934022 | Conductive caster A conductive caster for grounding a conductive wheeled chair having a seat and back with conductive elements which are electrically connected to a source of ground potential through the chair, the conductive caster including a caster body, caster wheels w... | 06/19/1990 |
| 4807328 | Roller or caster with electrically conductive wiper contact A roller intended in particular for office furniture comprises a supporting body (1) made from a plastic material, an axle (2) mounted in the supporting body, at least one wheel (2) seated on the axle, a metallic pin (5) seated rotatably in the metallic b... | 02/28/1989 |
| 4763383 | Electrically conductive caster having loop depending rings A caster with a constant electrically conductive path defined from the pintle to the surface on which the caster wheels are supported to prevent the build up of static charges which may generate sparks and uncontrolled voltage surges that may damage elect... | 08/16/1988 |
| 4321653 | Grounding device for vehicles A safety grounding device for vehicles having a conductive resilient strip adjustably suspended from the vehicle frame through a fixture attached to the base end portion thereof, to make a resilient contact with the ground at its lower end. A reflecting m... | 03/23/1982 |
| 4059846 | Lift with electrical grounding means A device for suspending a raft from a transport such as a helicopter so that the raft can be lowered and raised into and out of the water without subjecting persons attending or occupying the raft to an electric shock from a static charge that may be carr... | 11/22/1977 |
| 3984732 | Hose guide A device for preventing the entanglement or wedging of paint, water or air hoses with the tires of a vehicle being worked on. Specifically, an elongated, longitudinally extendable hose guide adapted to be engaged with the body or frame of a motor vehicle ... | 10/05/1976 |