...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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.
| Number | Title | Issue Date |
| 6875948 | Method and device for controlling the welding by flash welding of two metallic parts The invention concerns a method for controlling the butt welding, by flash welding, of two metallic parts (A, A′) in a welding machine of the type comprising two pairs of clamping dies (2, 2′) mounted respectively on a fixed frame (1) and on a mobi... | 04/05/2005 |
| 6820007 | Vehicle operation assist control system Provided is a control system that assists the vehicle operator in avoiding an obstacle by making use of simple information on the surrounding environment, and the effectiveness of such a system was demonstrated by computer simulations. The lateral acceleration that ... | 11/16/2004 |
| 7372303 | Semiconductor integrated circuit A driver circuit for a signal line of a large load is configured to include: a pMOS transistor having a source and a drain connected with a signal line and a ground line, respectively, and a gate receiving an input signal; and an nMOS transistor having a source and ... | 05/13/2008 |
| 7370079 | System for sending and receiving e-mail to which a plurality of positional data are attachable An e-mail sending and receiving system in which positional data about a plurality of places can be included in an e-mail message to be sent, and further detailed data can be obtained based on the included positional data, thereby improving the convenience and effect... | 05/06/2008 |
| 7369397 | Capacitor device The present invention provides a capacitor device including a plurality of capacitor elements adjacent to each other along an axial direction are electrically connected to each other by fitting between a first terminal of one capacitor element and a second terminal ... | 05/06/2008 |
| 7369836 | Adjacent interference removal device An adjacent interference removal device capable of providing an improved reception quality. An IF signal Sin having passed through an IF filter having a pass frequency band width of 200 kHz is supplied to a first narrow band filter having a pass frequency band width... | 05/06/2008 |
| D550383 | Front combination lamp of automobiles | 09/04/2007 |
| 7173994 | Timing recovery circuit with multiple stages A timing recovery circuit includes a first oscillating circuit configured to produce a first timing signal, a second oscillating circuit configured to produce a second timing signal, a first decimation circuit coupled to a supply node of a first clock signal and to ... | 02/06/2007 |
| D535806 | Edible pet chew | 01/30/2007 |
| 7132691 | Semiconductor light-emitting device and method for manufacturing the same It has a structure in which an active layer (5) that emits light by electric current injection is sandwiched between an n-type cladding layer (4) and a p-type cladding layer (6) made of materials having a larger band gap than the active layer ( | 11/07/2006 |
| 7110226 | Regulator protection circuit and power supply apparatus incorporating it A power supply apparatus has a regulator and a regulator protection circuit. On detecting an abnormality, an abnormality detection circuit in the regulator protection circuit turns the regulator off. Based on the output of the abnormality detection circuit, an abnor... | 09/19/2006 |
| 7110794 | Adaptive array apparatus and compensation method for compensating a phase difference used for generating a directivity response pattern An adaptive array apparatus includes a control unit 50 and a plurality of radio units 10˜40 that each have a modulator 11, a transmission circuit 12, a switch 13, a phase detecting unit 14, a reception circuit 15, an... | 09/19/2006 |
| 7105352 | Intelligent polymerized crystalline colloidal array carbohydrate sensors The present invention is related to glucose sensors that are capable of detecting the concentration or level of glucose in a solution or fluid having either low or high ionic strength. The glucose sensors of the present invention comprise a polymerized crystalline c... | 09/12/2006 |
| 7101943 | Peroxide-curable fluoroelastomers Fluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) C2–C8 hydrogenated fluoroolefins; b) fluorovinylethers of general formula: CFX═CXOCF2OR ... | 09/05/2006 |
| 7100716 | Modular wheel chair The invention relates to a small vehicle, particularly a wheel chair, having a modular structure including a main component, at least one pivotable wheel which is adapted to be detachably mounted at said main component via a quick release device, at least one drivin... | 09/05/2006 |
| 7097163 | Device for controlling choke valve of carburetor A device for controlling a choke valve of a carburetor for an engine, includes a choke closed state hold device for holding, in a closing position, a choke lever connected to the choke valve of a carburetor and urged by a spring in a direction for opening the choke ... | 08/29/2006 |
| 7095260 | Spread spectrum clock generation circuit, jitter generation circuit and semiconductor device A spread spectrum clock generation circuit capable of further reducing the electromagnetic wave radiation with a simple configuration has been disclosed and, particularly in a spread spectrum clock generation circuit using a current control oscillator (ICO), a diffe... | 08/22/2006 |
| 7091295 | Amorphous perfluorinated polymers Use of amorphous perfluorinated polymers for preparing transparent films at 157 nm, said perfluorinated polymers being free from unstable ionic end groups COF, COOH or their amidic derivatives, esters or salts, said polymers formed by cyclic units deriving from perf... | 08/15/2006 |
| 7085572 | Wireless base station and a wireless phone On receiving a link channel assignment request or a link channel reassignment request from a mobile station, a wireless base station specifies a unique word (UW) that is not assigned to any other mobile stations, and sends a channel assignment notification containin... | 08/01/2006 |
| D525569 | Handle for an electric wheelchairs | 07/25/2006 |
| 7078953 | Level down converter A level down converter having a first inverter supplied a first power supply voltage, and outputting signals made by logical inversions of input signals, and a second inverter supplied a second power supply voltage being lower than the first power supply voltage, an... | 07/18/2006 |
| D521415 | Motor scooter | 05/23/2006 |
| 7040433 | Drive control apparatus for hybrid vehicle A rotational shaft receives drive power from an engine and a first motor, and drives front wheels through front clutches. A second motor drives rear wheels. The first motor and the second motor are supplied with electric power from a battery. A main ECU controls an ... | 05/09/2006 |
| D518903 | Front combination lamp for an automobile | 04/11/2006 |
| D518200 | Rear combination lamp of automobiles | 03/28/2006 |
| 7019418 | Power control circuit with reduced power consumption A first conductive transistor having a high threshold value and a second conductive transistor having a low threshold value are connected in series between a first actual power supply line supplying a power supply voltage and a virtual power supply line connected to... | 03/28/2006 |
| 7019274 | Solid state image pickup device with wide dynamic range A solid state image pickup device, having: a semiconductor substrate; a plurality of pixels formed on the semiconductor substrate, each pixel having a plurality of photoelectric conversion elements inclusive of a first photoelectric conversion element and a second p... | 03/28/2006 |
| 7012411 | Switching regulator control circuit, switching regulator and switching regulator control method Provides a switching regulator control circuit, a switching regulator and a switching regulator control method for achieving low current consumption and quick response at normal operating time. A change-over switch MFB for opening/closing the phase compensation is p... | 03/14/2006 |
| 7006348 | Solid electrolytic capacitor and manufacturing method of the same A solid electrolytic capacity has an anode foil 2 having dielectric oxide layer 16 formed on surface thereof, a cathode foil 4 having whiskers 18 that are formed on surface thereof and hold carbide grains 17, a separator paper 6... | 02/28/2006 |
| 7003554 | System and method for downloading portions of a remotely located network object to produce a completely downloaded local copy of the network object System and method for downloading portions of a remotely located network object to produce a completely downloaded local copy of the network object. The system and method include and involve a server facility and a software delegate. The server facility is configure... | 02/21/2006 |
| 6999360 | Shift redundancy circuit, method for controlling shift redundancy circuit, and semiconductor memory device A shift redundancy circuit for enabling switching operation of memory blocks to be executed at a high speed and for reducing current consumption relating to the switching operation. A shift control circuit includes a first shift control circuit for generating a firs... | 02/14/2006 |
| 6996837 | Terminal equipment for cable television Terminal equipment has a master terminal (1) and a slave terminal (2), the master terminal (1) includes a first tuner (TA) receiving the cablecast signal for television programming delivered from the cable television station, and applying an ima... | 02/07/2006 |
| 6984322 | Voided polyester film The present invention relates to a biaxially stretched, laminated, white microporous polyester film, which can be used in a wide range of industrial applications including printing, imaging, advertising and display. The film of the present invention comprises a poro... | 01/10/2006 |
| 6981797 | Hydrodynamic bearing unit The squareness of the both end surfaces of the flange portion with respect to the outer circumference of the shaft portion of the shaft member is set to 0.001 mm or less respectively, and the flatness of both end surfaces of the flange portion is set to 0.001 mm or ... | 01/03/2006 |
| D512375 | Capacitor module | 12/06/2005 |
| 6964745 | Use of superabsorbent polymers for treating raw skins, corresponding compositions and methods and resulting treated skins The invention relates to use of superabsorbent (co)polymers (SAP) as an agent for preservation treatment of animal hides. The SAP is used preferably in conjunction with salt or other hygroscopic agent, in particular 50% NaCl/50% SAP by weight. Suitably treated hides... | 11/15/2005 |
| 6962340 | Mechanical seal device A primary technical goal of the present invention is to improve the durability and the seal performance of a cup gasket for a mechanical seal device which retains a seal ring. The mechanical seal device disposes a cup gasket made of a resilient rubber material betwe... | 11/08/2005 |
| D511125 | Handle center cover for a motor scooter | 11/01/2005 |
| 6957250 | Map-information providing system using computer network A map-information providing site S1 has a WWW server S1a for displaying a WWW page for making a designation entry for a request to provide a map image to an information terminal T. A map database site S2 has a map-information database S | 10/18/2005 |
| 6953969 | MOSFET for an open-drain circuit and semiconductor integrated circuit device employing it In a conventional N-channel MOSFET for an open-drain circuit, when a positive static electric charge is applied to its drain, there is no route by way of which to discharge the static electric charge, resulting in a rather low static withstand voltage. To overcome t... | 10/11/2005 |