...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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 |
| 5172696 | Photoelectric sphygmomanometer of volume oscillometric method-type A photoelectric sphygmomanometer of volume oscillometric method-type is provided with regulating means for regulating quantity of light, carrier-wave gain and pulsation gain based upon the level of the carrier wave immediately after the start of cuff depr... | 12/22/1992 |
| 5172985 | Multidirectional propeller shaft bearing A multidirectional propeller shaft bearing is disclosed which includes a body made of two die-stamped plates, the first being provided with a cylindrical box having an anchoring flange on one side and the opposite side has an attached, welded and equally ... | 12/22/1992 |
| 5173314 | Apparatus for bending and forming a composite material sheet For forming a resin-impregnated, fiber reinforced composite material sheet having laminated meshes of fibers into a U-shaped cross section, the sheet is placed onto a stationary forming die and an auxiliary forming die with the fibers of the sheet forming... | 12/22/1992 |
| 5172902 | Paper storing device with a swingable engaging member and an engaging/detaching mechanism In a paper feeding device, a paper feeding deck which moves back and forth is provided with a guide bar which extends in the direction in which the paper feeding deck moves and which has grooves formed in required portions corresponding to the sizes of re... | 12/22/1992 |
| 5171898 | Method for the production of 1,3-propandiol The hydration of acrolein in the presence of a chelate-forming ion exchange resin based on polystyrene/divinyl benzene as catalyst and on the subsequent hydrogenation of the reaction mixture freed of the non-reacted acrolein and containing 3-hydroxypropio... | 12/15/1992 |
| 5171523 | Method and apparatus for disinfecting objects Contaminated objects are disinfected in a device which has a cavity formed by a fluid impermeable wall, an opening that is closeable by a seal, and a dispensing conduit which is spaced from the seal. Objects are placed in the cavity, the opening is sealed... | 12/15/1992 |
| 5170967 | Aircraft fuselage structure An aircraft fuselage structure is fabricated by the following steps. A plurality of ring-shaped members are first prepared, each member being provided around the outer peripheral surface thereof at positions spaced apart in the circumferential direction t... | 12/15/1992 |
| 5169847 | Drug solutions of increased stability and without tissue-damaging effect and process for preparing same The invention relates to novel pyroxycam solutions of increased stability and without tissue-damaging effect, particularly to solutions which can be used as injectable solutions or eye drops. The solution according to the invention comprises 1 to 5% by mass of... | 12/08/1992 |
| 5170117 | Socket for testing a plug-in type semiconductor A socket for testing a plug-in type semiconductor having two rows of flat pins includes an elongated base having two rows of resilient conductive clamps positioned on the base and an elongated cover mounted on the base and having rows of openings correspo... | 12/08/1992 |
| 5170438 | Method and apparatus for determining the flow rate of a viscous fluid stream A method of determining the flow rate of a viscous fluid stream comprises passing the fluid stream through a field of view of an electronic imaging device, which produces output signals representing images of the fluid stream at successive times t0 | 12/08/1992 |
| 5170228 | Opto-electronic integrated circuit Present invention is to provide a process for producing an opto-electronic integrated circuit comprising a field effect transistor as an electronic device and a photo-diode as an optical device both formed on an InP substrate, the field effect transistor ... | 12/08/1992 |
| 5167156 | Level detecting device in a plastic fuel tank A level detecting assembly that features a level detecting device which includes a float hinged by an arm for displacement in accordance with a level of fuel in a plastic fuel tank. The level detecting device also includes a reference rod extending from a... | 12/01/1992 |
| 5167065 | Wheel attachment aid apparatus in automobile assembly line In an automobile assembly line wherein a car body is hung and conveyed by a hanger; an apparatus for aid in attaching a wheel in which the wheel is set on a pair of wheel supporting structures (12, 12) at a wheel placement position, a base plate (10) is h... | 12/01/1992 |
| 5167954 | Hair lotion containing cardomom and use thereof A composition, method for producing and method of use of a hair lotion is disclosed. The hair lotion is based on an ethyl alcohol extract of cardamom and distilled water. The hair lotion may optionally include camomile extract and/or orange flower water. ... | 12/01/1992 |
| 5166732 | Developer agitating method and developer agitating apparatus In a developer agitating method, a carrier and a toner are mixed by a spiral in an agitating passage to provide the developer. The developer is conveyed along the axis of the spiral through a high conveying speed section of the passage wherein the develop... | 11/24/1992 |
| 5166426 | Process for producing L-carnitine from D,L-carnitine nitrile salts Synthesis of L-carnitine by chemical optical resolution of D,L-carnitine nitrile salts, where the D,L-carnitine nitrile salt is reacted with optically active N-acetylproline as the resolving agent in order to form the diastereomer salts after conversion t... | 11/24/1992 |
| 5166120 | Cylindrically formed catalyst for the oxychlorination of ethylene A carrier catalyst containing copper and alkali ions on an annular carrier of surface-active material is defined by the dimensions of the carrier body and the porosity of the finished catalyst. Its total pore volume is 0.6-1.0 ml/g, pores smaller than 4 n... | 11/24/1992 |
| 5165970 | Method of coating honeycomb bodies with finely divided solid matter A method for the uniform coating of honeycomb bodies with finely divided solid matter from a dispersion in an amount which is below that which arises during customary immersion. To this end, the honeycomb is flooded from below with dispersion, emptied aft... | 11/24/1992 |
| 5165838 | Vehicle for transporting loads A vehicle having a suspension control system that is especially applicable to an aircargo transport loader which is adapted for storage in a cargo hold of an aircraft. The suspension control system utilizes sensors to monitor the clearance between the veh... | 11/24/1992 |
| 5165791 | Method and apparatus for measuring temperature based on infrared light A method of using infrared light for measuring the temperature of a semiconductor element with a surface layer formed by two kinds of materials that have different emissivities and optical reflectances is disclosed. The method includes the step of taking ... | 11/24/1992 |
| 5165207 | Apparatus and method for forming a space frame structure Structural components for forming a space frame, particularly a geodesic dome structure, as well as a method of assembling the structural components is described in this invention. The structural components feature a connector having a slotted tubular mem... | 11/24/1992 |
| 5166934 | Self-diagnois and repair system for image forming apparatus A system according to the invention has a plurality of sensors, a system control circuit and a plurality of actuators. State data, supplied from the sensors, is compared with characteristic data in the system control circuit. From this comparison, it is j... | 11/24/1992 |
| 5167018 | Polygon-filling apparatus Polygon filling apparatus in which data are obtained through registers from memory files for holding accumulated addition values and incremental values, such data are added in a single addition circuit, the accumulated addition values in one of said regis... | 11/24/1992 |
| 5165006 | Vehicle motor switching apparatus Thers is provided a vehicle motor switching apparatus having an armature coil, a series circuit including a series coil and connecting the armature coil and a battery and a shunt coil, comprising a switch for connecting the shunt coil to the series circui... | 11/17/1992 |
| 5164800 | Semiconductor device This invention is a semiconductor device comprising a heterojunction of (AlAs)x (InSb)1-x wherein a composition ratio x is 0.65 to 0.85 and InP. In addition, this invention is a semiconductor device comprising a heterojunction of (Al... | 11/17/1992 |
| 5164686 | High-frequency oscillator having a field-effect transistor with a stepwise increasing active layer carrier concentration This invention is a high-frequency oscillator including a MESFET, wherein a GaAs MESFET, in which the doping profile of an active layer has a pulse-doped structure, is used as the MESFET. Since the GaAs MESFET is formed to have the pulse-doped structure, ... | 11/17/1992 |
| 5163970 | Nitro-p-phenylenediamine derivatives, processes for their preparation and coloring agents containing these for use on keratin fibres Compounds of the formula I are described: ##STR1## wherein R1 and R2 independently of one another each represent a hydrogen atom, a (C1 -C2) alkyl group, a hydroxy (C2 -C3) alkyl group... | 11/17/1992 |
| 5163588 | Atomizing pump dispenser for water based formulations The lower end of a first hollow vertical cylinder curves inwardly to merge with the upper end of a lower second cylinder. A hollow vertical piston extends through a top opening of the first cylinder into the first cylinder and is vertically movable therei... | 11/17/1992 |
| 5162121 | Apparatus for extruding multiple synthetic resins A nozzle device for extruding multiple synthetic resins as a resin composite, having a main extrusion flow passage having a main extrusion opening, a subsidiary extrusion flow passage having a subsidiary extrusion opening, at least a downstream portion of... | 11/10/1992 |
| 5161769 | Safety marker suspension device A safety marker suspension device which consists of a rod having a first end and a second end. The first end is attached to a safety marker. A plate is secured transversely to the second end of the rod. A housing is provided having a side wall defining an... | 11/10/1992 |
| 5161606 | Interactive electronic thermostat with minimum and maximum temperature thermal limit switches An interactive electronic thermostat operates to communicate with an installer through an audible or visual display and keypad to instruct the installer to perform tasks and enter observations to effect proper connections at the thermostat of heater/air c... | 11/10/1992 |
| 5160885 | Metal detecting apparatus and apparatus including guide housing for guiding a metal test piece, for testing metal detecting apparatus Apparatus for testing metal detecting apparatus employs a test piece of representative metal which is passed through a section of the electromagnetic field of the metal detecting apparatus to record a response signal as if metal has been detected. The tes... | 11/03/1992 |
| 5160785 | Padding body A resilient padding body which comprises an intermediate base layer and upper protruberances extending upwardly off the surface of the base layer and bottom protruberances extending downwardly off a lower surface of the base layer. The padding body includ... | 11/03/1992 |
| 5160546 | Lactitol trihydrate crystal, crystalline mixture solid containing it and process for preparing them The present invention is to solve a variety of problems relative to conventional lactitol crystals and relates to a trihydrate crystal of lactitol having a molecular formula C12 H24 O11.3H.sub.2 O and a melting point of 52... | 11/03/1992 |
| 5160220 | Method of improving ground of large area The present invention relates to a method for improving the ground of a large area. The method comprises the steps of inserting a pipe into a hole previously dug in the ground, injecting a high pressure liquid and a ground improving injection liquid from ... | 11/03/1992 |
| 5160012 | Crane system with continual conveyor system for moving discrete items of freight One or a plurality of circular conveyors are arranged at the transition points between vertical and horizontal conveyor sections in a continually operating conveyor system for moving items of freight, in particular sacks, cases, bundles, or the like. The ... | 11/03/1992 |
| 5158608 | Environmentally benign alkyd resins and coating materials made using the resins Alkyd resins, processes for their production, and their use are disclosed, these resins being distinguished by the fact that, in production, no organic solvents are used. The alkyd resins are clear and almost odorless and have a low viscosity. When used a... | 10/27/1992 |
| 5158414 | Rail attaching device permitting longitudinal rail displacement A rail attachment device which allows for longitudinal displacement of a rail. The rail attachment device includes a first element fixedly supported to a ribbed plate and having a vertical arm extending essentially parallel to the longitudinal direction o... | 10/27/1992 |
| 5158118 | Single layer paper making on which plane surfaces of auxiliary weft threads have been formed In a single-layer paper making woven fabric of more than five shafts, auxiliary wefts each having a smaller diameter than that of the primary wefts are disposed between each of the primary wefts. Each of the auxiliary wefts is woven twice into a repeating... | 10/27/1992 |
| 5157922 | Device for generating utilizable energy from potential energy The invention is a device for generating utilizable energy from potential energy of slowly driving motor vehicles such as street traffic. The device comprises at least one rigid pivoted plate supported on a bearing block. The plate can be lowered by the f... | 10/27/1992 |