...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Application No. | Application Title | Issue Date |
| 20110162750 | FLEXIBLE PIPE FOR CONVEYING HYDROCARBONS HAVING A HIGH CORROSION RESISTANCE, AND METHOD FOR MAKING SAME A flexible tubular duct for conveying corrosive fluids and used in the filed of petroleum extraction at sea. A flexible tubular duct includes at least one inner carcass (2) and a polymer sealing sheath (3). The inner carcass has a reinforcement metal profi... | 07/07/2011 |
| 20100154915 | HOSE A hose is provided by the present invention. The hose includes a nut cap, a plastic hose and a metal spiral hose. On at least one end of the metal spiral hose is disposed an outer sleeve and an inner metal sleeve. In which, the inner metal sleeve has an initial outer di... | 06/24/2010 |
| 20100154914 | SEMI-RIGID FLEXIBLE DUCT A semi-rigid, flexible duct including a pair of coaxial sleeves, namely an inner sleeve and an outer sleeve disposed parallel to and about the inner sleeve and a resilient wound element disposed between the sleeves. Each of the inner sleeve and the outer sleeve constitu... | 06/24/2010 |
| 20100146768 | FLEXIBLE PIPE Apparatus and methods are disclosed relating to flexible pipe and composite tape. Flexible pipe body for a flexible pipe comprises an internal pressure sheath and at least one armour layer over the sheath comprising a wound tape of composite material. A method for manuf... | 06/17/2010 |
| 20100139801 | DURABLE SEMI-RIGID FLEXIBLE DUCT A durable, semi-rigid, flexible duct including a pair of coaxial sleeves, namely an inner sleeve and an outer sleeve disposed parallel to and about the inner sleeve and a resilient wound element disposed between the sleeves. Each of the inner sleeve and the outer sleeve... | 06/10/2010 |
| 20100139800 | TUBULAR BODY COMPRISING TWO OR MORE LAYERS OF HELICALLY BENDED STRIPS The invention concerns an elongated, multilayered tubular body (1) comprising an elongated, tubular inner hollow core (5), an elongated, tubular inner casing (4) and an elongated, tubular outer casing, the inner casing surrounding the hollow core, t... | 06/10/2010 |
| 20100108170 | Crush resistant stay put hose A crush resistant and stay put hose is provided. There is a helical member having a plurality of coils and a wall surface of one or more thermoplastic polymer layers. The layers extend from one coil to the next and the wall surface between the coils has at least one liv... | 05/06/2010 |
| 20100089478 | FLEXIBLE PIPE The invention relates to a flexible pipe comprising a plurality of layers surrounding a longitudinal axis and an at least partly integrated sensor arrangement. The plurality of layers comprising an internal sheath and one or more armouring layers, at least one armouring... | 04/15/2010 |
| 20100084035 | FLEXIBLE TUBULAR PIPE FOR TRANSPORTING GASEOUS HYDROCARBONS The invention relates to a flexible tubular duct for transporting gases under high pressure in the field of offshore oil exploitation. The duct is of the unlinked and smooth passageway type, and comprises from inside to outside an inner polymer tube, a pressure vault fo... | 04/08/2010 |
| 20100059134 | FLEXIBLE PIPE The invention relates to a flexible pipe for transportation of fluids and gasses, e.g. useful in water transportation, and in offshore transportation of crude oil e.g. from seabed to an installation or between installations. The flexible pipe of the invention comprises ... | 03/11/2010 |
| 20100050724 | Metallic Strip and Methods and Structures Incorporating the Same A method of forming a flexible conduit including: providing an elongated flexible metallic strip having a central portion disposed between a first and a second end portion, wherein at least a portion of the central portion includes a cross-sectional thickness TC 03/04/2010 | |
| 20100037973 | Flexible hose resistant to rollover An efficient flexible hose construction is provided which incorporates resistance, when subjected to high negative pressure loads, to the collapse failure known “rollover” or “shingling”. The construction relates to a means of increasing the torsion capability o... | 02/18/2010 |
| 20090321105 | FLEX DUCT An apparatus may comprise a wire frame, a material, and mating connectors. The wire frame is covered by the material to form a flexible duct having a first end and a second end. A first mating connector may be electrically connected to the wire frame and attached to the... | 12/31/2009 |
| 20090056824 | Metallic Strip And Methods And Structures Incorporating The Same A flexible cable may include an elongated shaped strip helically wound around itself to form a generally tubular body having at least one interior passageway and at least one conductor at least partially disposed within the interior passageway. The elongated shaped stri... | 03/05/2009 |
| 20090050228 | STABILIZED FLEXIBLE PIPE FOR TRANSPORTING HYDROCARBONS The invention relates to a flexible pipe for transporting hydrocarbons, comprising the following, from the inside towards the outside: a cylindrical structural set adapted in such a way that it can withstand radial stress and at least one first armure lap, said first ar... | 02/26/2009 |
| 20080264509 | SPIRAL-WOUND DIAPHRAGM BELLOWS, AND METHOD OF MAKING SUCH A DIAPHRAGM BELLOWS A diaphragm bellows includes a spiral-wound, pre-profiled metal strip having neighboring turns which are connected by a continuous welding seam in an area of an outer diameter or inner diameter of the metal strip. Neighboring flanks of the metal strip enter a region of ... | 10/30/2008 |
| 20080245883 | PAINT APPLICATION APPARATUS AND SYSTEM WITH SAME An insulated hose for a high voltage paint application apparatus comprising an inner hose containing a fluid or paint charged at a high voltage. The inner hose is arranged inside at least one second insulating layer. A system for applying paint or other fluid materials ... | 10/09/2008 |
| 20080190507 | Flexible Tubular Pipe With An Anti-Wear Sheath A flexible tubular conduit for transporting hydrocarbons comprising at least two metal sheathing covers which are separated by a plastic anti-wear layer. Each cover is produced by helically winding a metal longitudinal element. The anti-wear layer is produced by helical... | 08/14/2008 |
| 20080041482 | METAL TUBE ARRANGEMENT WITH INNER TUBE AND OUTER TUBE The invention relates to a metal tube arrangement (1) for exhaust pipes of motor vehicles, which typically includes an inner tube (10) with hook or interlock connection as well as a bellows-like an outer tube (20). The inner tube (10) and the... | 02/21/2008 |
| 20070220732 | Flexible semi-rigid clothes dryer duct A semi-rigid, flexible, duct for gas transport and for clothes dryer exhaust transition, and a method for manufacture thereof, including a pair of coaxial sleeves, an inner sleeve and an outer sleeve disposed parallel to and about the inner sleeve, and a resilient helic... | 09/27/2007 |
| 20070199607 | Guide wire A method of making a guide wire involves butting a connection end face at a proximal end of a first wire against a connection end face at a distal end of a second wire while applying voltage and a pressing force to weld together the first and second wires at a welded po... | 08/30/2007 |
| 20060157134 | Flexible pipe and method for producing the same In a flexible pipe having shape retaining capabilities, a first pipe is provided having a first base wire and a first subsidiary wire, the first base wire being wound in a spiral manner, the first subsidiary wire externally covering the first base wire and being fit int... | 07/20/2006 |
| 20060151044 | Pipe, method and device for improved pipelines and similar objects The invention relates to pipes, pipelines and similar objects and can be used in aviation, metallurgy, shipbuilding etc. Its task is to raise fault withstandability of s design. The task is solved in that a pipe has at least one conductive spiral layer for control and r... | 07/13/2006 |
| 20060124189 | Hose A hose (10) comprising a tubular body (12) of flexible material arranged between an inner and an outer helically wound wire (22, 24). The hose (10) further comprises an elongate member having opposing longitudinal edges, the elongate member b... | 06/15/2006 |
| 20060090808 | Flexible tubular fluid-transfer conduit A flexible tubular pipe having a pressure sheath, a pressure vault comprising at least one pressure-resistant armor, an intermediate sheath and at least one tensile armor layer. The inner annular space formed between the pressure sheath and the intermediate sheath compr... | 05/04/2006 |
| 20060048833 | Flexible armoured pipe and use of same An armoured flexible pipe consists of an inner liner (3), which surrounds a carcass (1, 2). On the other side of the inner liner (3) there are two armour layers, where the innermost (5, 6) is a pressure armour layer, while the outermost (7... | 03/09/2006 |
| 20050011573 | Flexible liner air gap pipe A multiple wall air gap pipe includes a rigid tube wall and at least one flexible tube wall defined by two or more overlapping profiles in wound, interlocking configurations. The multiple wall air gap pipe can be bent on conventional single wall pipe bending apparatus, ... | 01/20/2005 |
| 20050011572 | Temperature controlled pipe and method of manufacturing same A pipe and a method of manufacturing same according to the pipe is formed, at least in part, with a tubular member formed of a plastic material, and dispersing a plurality of electrical current conductive materials in the plastic material for increasing the electrical c... | 01/20/2005 |