Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 6368089 | Orbiting blade rotary machine An orbiting blade rotary machine, especially for use in compressor and expansion motor units, includes a stator housing bounding an internal space that includes a substantially cylindrical internal chamber centered on a central axis. A power shaft extends... | 04/09/2002 |
| 5270132 | Minimized corrosion fuel cell device and a method of making the same A carbon-based material substrate of a cathode electrode of an acid electrolyte fuel cell is made corrosion resistant by depositing a material that is nonwettable by the electrolyte on that major surface of the substrate which carries a catalyst layer all... | 12/14/1993 |
| 5264299 | Proton exchange membrane fuel cell support plate and an assembly including the same A support plate for a proton exchange membrane fuel cell includes a porous support body that has a central portion and a peripheral portion integral with and circumferentially completely surrounding the central portion, and a sealing body of elastomeric s... | 11/23/1993 |
| 5262249 | Internally cooled proton exchange membrane fuel cell device An internally cooled proton exchange membrane fuel cell device includes a fuel cell including a pair of substantially coextensive electrode components each of which includes a porous central region and a fluid-impermeable peripheral region circumferential... | 11/16/1993 |
| 5233554 | Programmable optical correlator An optical correlation system employing the degenerate four wave mixing uses cross-polarized pump and probe beams to prevent the writing of a volume transmission phase hologram in a photorefractive crystal having an applied electric field parallel to the ... | 08/03/1993 |
| 5217821 | High current acid fuel cell electrodes Electrodes for an acid fuel cell are disclosed. The electrodes include a porous substrate and a catalyst layer supported on the substrate. The catalyst layer includes catalyst particles, a hydrophobic binder for providing a network of hydrophobic gas pass... | 06/08/1993 |
| 5210653 | External actuator for a deformable mirror An actuator device of particular use in changing the configuration of a deformable mirror faceplate includes an electrically deformable actuator confined between a back surface of a support and a nut that is threaded onto a threaded end portion of elongat... | 05/11/1993 |
| 5202195 | Method of and arrangement for replenishing hydrogen consumed by a fuel cell device An arrangement for replenishing hydrogen consumed in a fuel cell device includes a reaction vessel that contains a quantity of a material that releases hydrogen on contact with water in a highly exothermic reaction. A hydrogen-containing gaseous medium is... | 04/13/1993 |
| 5193128 | Integrated optic modulator with smooth electro-optic bandpass characteristics An optic intensity modulator includes a substrate of an optic material that is conductive to light and acoustic waves and has both electrooptic and piezoelectric properties. A pair of associated elongated light waveguides is formed in the substrate, with ... | 03/09/1993 |
| 5178968 | Extruded fuel cell stack shunt current prevention arrangement A fuel cell stack includes a plurality of fuel cells juxtaposed with one another in the stack and each including a pair of porous plate-shaped anode and cathode electrodes that face one another, and a quantity of liquid electrolyte present at least betwee... | 01/12/1993 |
| 5166507 | Lidar countermeasure using amplitude and phase front modulation and degenerate four-wave mixing A lider countermeasure receives an interrogating laser beam and returns a beam having a distorted phase point such that the interrogating system generates a false angular portion for the returned radiation. The false phase front is achieved by independent... | 11/24/1992 |
| 5156929 | Fuel cell stack liquid electrolyte migration prevention arrangement A fuel cell stack includes a plurality of fuel cells juxtaposed with one another in the stack and each including a pair of plate-shaped anode and cathode electrodes that face one another, and a quantity of liquid electrolyte present at least between the e... | 10/20/1992 |
| 5137540 | Composite monolithic lamp and a method of making the same A composite yet monolithic free abrasive grinding lap includes a sintered porous matrix of ceramic or metal material and a quantity of silicon filler material, substantially completely filling the pores of the sintered porous matrix preform at least throu... | 08/11/1992 |
| 5130164 | Solder-coating method An arrangement for solder-coating respective end portions of elongated components in a molten solder bath includes a fixture to be loaded with the components. This fixture includes at least one supporting wall that is capable of maintaining the fixture af... | 07/14/1992 |
| 5079104 | Integrated fuel cell stack shunt current prevention arrangement A fuel cell stack includes a plurality of fuel cells juxtaposed with one another in the stack and each including a pair of plate-shaped anode and cathode electrodes that face one another, and a quantity of liquid electrolyte present at least between the e... | 01/07/1992 |
| 5079773 | Tailored cross section optical waveguide laser array A phase-locked ridge waveguide gas laser includes a body that circumferentially bounds an elongated internal space extending along a longitudinal main plane and bisected by a longitudinal central plane. The internal space contains a gaseous lasing medium ... | 01/07/1992 |
| 5077816 | Fiber embedded grating frequency standard optical communication devices A narrowband laser source includes an optical fiber section including a core centered on a longitudinal axis and a cladding surounding the core, and having a grating region embedded in the core. The grating region includes a multitude of Bragg grating ele... | 12/31/1991 |
| 5076348 | Solid-to-liquid phase change cooled mirror arrangement A phase change material cooled mirror arrangement includes a mirror substrate which has a reflective front major surface and a rear major surface. The mirror is cooled by advancing at least one rod of a solid phase change material toward the rear major su... | 12/31/1991 |
| 5075596 | Electroluminescent display brightness compensation The luminosity of electroluminescent display pixels arranged at intersection regions between row and column electrodes is controlled so as to compensate for the effect of interelectrode coupling by reducing the voltage differentials applied between the ro... | 12/24/1991 |
| 5074118 | Air turbo-ramjet engine A jet engine designed to power a supersonic airplane throughout a range of speeds from subsonic to high supersonic includes a housing which bounds an internal passage having in succession a fixed-area inlet section, a diverging passage section, a mixing s... | 12/24/1991 |
| 5070722 | Turbine engine debris ingestion monitor A turbine engine debris ingestion monitor has an acoustic emission sensor 18, 18a mounted on a surface 14, 14a disposed in an air flow stream of a turbine engine 12. The sensor converts acoustic emissions 16, generated by particles of debris 10 impacting ... | 12/10/1991 |
| 5071239 | Catadioptric conically scanning telescope A beam of light issued by a light source enters a catadioptric arrangement and initially travels therethrough along an axis. At least one lens is situated at the axis and is axially delimited by two curved major surfaces having respective centers of curva... | 12/10/1991 |
| 5066133 | Extended length embedded Bragg grating manufacturing method and arrangement An arrangement for forming an extended length light redirecting embedded grating in an elongated solid material optical waveguide includes a source that directs a coherent light beam of a frequency in the ultraviolet range in a primary path transversely t... | 11/19/1991 |
| 5061032 | Optical waveguide embedded light redirecting and focusing Bragg grating arrangement An optical waveguide light redirecting arrangement includes an optical waveguide having a solid portion that guides light in a first path along a longitudinal axis, with at least one grating region being embedded in the solid portion at a location remote ... | 10/29/1991 |
| 5052826 | Distributed load journal bearing A bearing arrangement for rotatably supporting a generally cylindrical journal having an outer circumferential surface exhibiting out-of-round deviations superimposed on a perfect cylinder that is centered on a longitudinal axis, with the journal acting o... | 10/01/1991 |
| 5048913 | Optical waveguide embedded transverse spatial mode discrimination filter An optical waveguide mode discrimination light filtering arrangement inclues an optical waveguide having an elongated multimode core, and a cladding that guides at least two modes of light of a given frequency in an elongated path along a longitudinal axi... | 09/17/1991 |
| 5049772 | Reduced noise commutator A commutator arrangement includes a commutator member rotatably mounted on a support and including a plurality of circumferentially adjacent contact pads that are mechanically connected with one another and electrically separated from each other by respec... | 09/17/1991 |
| 5042898 | Incorporated Bragg filter temperature compensated optical waveguide device A temperature compensated embedded grating optical waveguide light filtering device includes an optical fiber having an elongated core in which light is guided toward a core portion of a predetermined limited length that has embedded therein a multitude o... | 08/27/1991 |
| 5042897 | Optical waveguide embedded light redirecting Bragg grating arrangement An optical waveguide light tapping arrangement includes an optical waveguide having solid portions that guide light in a first path along a longitudinal axis, with at least one grating region being embedded in the solid portion at a location remote from i... | 08/27/1991 |
| 5041856 | In-line metallic debris particle detection probe and resonant evaluation system utilizing the same An arrangement for detecting metallic particles carried by a fluid includes a metallic probe member which surrounds an elongated passage through which the fluid flows and which is constituted by a split tube having two marginal portions delimiting a gap w... | 08/20/1991 |
| 5035725 | Composite monolithic free abrasive grinding lap and a method of making the same A composite yet monolithic, free abrasive grinding lap includes a sintered porous matrix of ceramic or metal material and a quantity of silicon, substantially completely filling the pores of the sintered porous matrix preform at least throughout an effect... | 07/30/1991 |
| 5022746 | Solid-to-liquid phase change cooled mirror arrangement A phase change material cooled mirror arrangement includes a mirror substrate which has a reflective front major surface and a rear major surface. The mirror is cooled by advancing at least one rod of a solid phase change material toward the rear major su... | 06/11/1991 |
| 5016967 | Multi-core optical waveguide Bragg grating light redirecting arrangement An optical waveguide light redirecting arrangement includes an optical waveguide having at least two solid portions each of which guides light in a path along a longitudinal axis, with at least one grating region being embedded in each solid portion. Each... | 05/21/1991 |
| 5007705 | Variable optical fiber Bragg filter arrangement A variable light filtering arrangement includes at least one optical fiber section including a waveguiding core, and at least one permanent Bragg grating region in the optical fiber section. The grating region includes a plurality of grating elements cons... | 04/16/1991 |
| 4996419 | Distributed multiplexed optical fiber Bragg grating sensor arrangeement An arrangement for determining the magnitudes of selected physical quantities at a multitude of spaced locations includes an elongated optical fiber having a multitude of separate longitudinally spaced Bragg sensing gratings of substantially identical ini... | 02/26/1991 |
| 4993824 | Thermal mapping compensated mirror and method of making the same A thermal distortion effect compensated mirror includes a mirror substrate having a reflective surface, and a compensating layer on the reflective surface. The compensating layer is of a material that is substantially transparent to a laser beam to be ref... | 02/19/1991 |
| 4987779 | Pulse-driven accelerometer arrangement An accelerometer arrangement includes an acceleration sensor that includes two capacitor plates having respective parallel mutually facing major surfaces which bound a sensing gap therebetween. A plate-shaped electrically chargeable proof mass is resilien... | 01/29/1991 |
| 4975225 | Manufacture of monolithic, stiff, lightweight ceramic articles A light-weight yet sturdy ceramic article, is manufactured by initially forming at least one fugitive core including a main portion and at least one holding portion projecting from the main portion and then positioning the fugitive core in a mold cavity b... | 12/04/1990 |
| 4961771 | Stress-free composite and a method of and arrangement for manufacturing the same Disclosed is the manufacture of a stress-free composite including reinforcing fibers embedded in and bonded to a matrix material such that differential contraction takes place in the matrix material relative to the fibers in response to temperature decrea... | 10/09/1990 |
| 4959567 | Magnetodistortive actuator with adjustable magnetic bias A magnetodistortive actuator includes an elongated active component of a magnetodistortive material mounted on a support and having a stationary and a movable end portion. At least one permanent magnet applied a permanent magnetic bias to the active compo... | 09/25/1990 |
