Abstract: A wall-wash light fixture for providing substantially uniform wall illumination includes a light source mounted to direct emitted light to a substantially arcuate kick reflector. The substantially arcuate kick reflector directs the emitted light toward the wall.

Abstract: An improved system and method for providing reduced acid gas/dewatered light hydrocarbon gas to a light hydrocarbon gas liquefaction process wherein a plurality of light hydrocarbon gas liquefaction trains are used.

Abstract: A residual current detection circuit comprises a current transformer CT for detecting an imbalance current indicative of a residual current and a full wave restifier FWR for providing an output whose amplitude corresponds to the magnitude of the residual current. The FWR output is applied simultaneously to two channels. The first channel includes a first comparator COMP1 to provide a first signal which persists during periods when the amplitude of the output exceeds a first level. The second channel includes a capacitor C2 which acquires a charge corresponding to the output level and a second comparator COMP2 for providing a second signal in response to the capacitor voltage exceeding a second level. An output is provided from the circuit only when the first signal is coincident with the second signal.

Abstract: A germicidal quartz lamp producing ultraviolet radiation having a sleeve coated with a titanium dioxide. Titanium dioxide is impregnated or embedded into the sleeve and mechanically held. Ultraviolet radiation having a wavelength of approximately 254 nm generated by the germicidal quartz lamp causes hydroxyl radicals to form on the titanium dioxide surface. The hydroxyl radicals act as a powerful oxidizing agent that destroys pollutants. In one embodiment, different densities of the titanium dioxide coating are formed along the longitudinal length of the quartz lamp. A longitudinal portion of the quartz lamp may be free of any titanium dioxide coating permitting the ultraviolet radiation to pass therethrough creating a germicidal effect. The titanium dioxide may be heated to a temperature above the melting point of the sleeve to create the mechanical bond. The present invention is useful in the commercial food industry or for consumer use.

Abstract: Disclosed are methods for efficiently and economically designing, constructing, or operating a light hydrocarbon gas liquefaction process for the liquefaction of selected quantities of light hydrocarbon gas. The method includes a light hydrocarbon gas liquefaction launch train to liquefy an initial amount of light hydrocarbon gas and one or more optional subsequent modular expansion phases to said light hydrocarbon gas liquefaction train to liquefy additional selected quantities of light hydrocarbon gas up to a selected maximum quantity of light hydrocarbon gas for the process. The methods employ shared use facilities, such as light hydrocarbon feed gas pretreatment facilities, refrigerant compression facilities, cryogenic heat exchange facilities, access services, other liquefaction equipment, and liquefied product storage and shipping facilities.

Abstract: A residual current device (RCD) senses a differential current flowing in A.C. mains supply live and neutral conductors and disconnects the supply from a load when the differential current exceeds a predetermined level. The device further includes a circuit for detecting a double grounded neutral fault in which current flows in an N-E loop formed by a double grounded neutral. The current is sensed as a differential current and detected as a correspondence between causing the current to flow and sensing the differential current.

Abstract: A resettable switching device, e.g. a relay, comprises a fixed contact (18) and a movable contact (28). A solenoid (12) is fixed relative to the fixed contact and a ferromagnetic plunger (20) carries the movable contact. A spring (24) biases the plunger away from the fixed contact so the device is normally open. When the device is set a further ferromagnetic element, e.g. a plunger (22), holds the first plunger (20) in a closed-contact position by magnetic attraction against the action of the spring (24). When a predetermined current condition exists in the solenoid the magnetic attraction between the element and plunger is reduced below the level necessary to hold the plunger so that the movable contact disengages the fixed contact.

Abstract: A residual current detection circuit comprises a current transformer CT for detecting an imbalance current indicative of a residual current and a full wave restifier FWR for providing an output whose amplitude corresponds to the magnitude of the residual current. The FWR output is applied simultaneously to two channels. The first channel includes a first comparator COMP1 to provide a first signal which persists during periods when the amplitude of the output exceeds a first level. The second channel includes a capacitor C2 which acquires a charge corresponding to the output level and a second comparator COMP2 for providing a second signal in response to the capacitor voltage exceeding a second level. An output is provided from the circuit only when the first signal is coincident with the second signal.

Abstract: A resettable switching device, e.g. a relay, comprises a fixed contact (18) and a movable contact (28). A solenoid (12) is fixed relative to the fixed contact and a ferromagnetic plunger (20) carries the movable contact. A spring (24) biases the plunger away from the fixed contact so the device is normally open. When the device is set a further ferromagnetic element, e.g. a plunger (22), holds the first plunger (20) in a closed-contact position by magnetic attraction against the action of the spring (24). When a predetermined current condition exists in the solenoid the magnetic attraction between the element and plunger is reduced below the level necessary to hold the plunger so that the movable contact disengages the fixed contact.

Abstract: Disclosed are methods and systems for vaporization of liquefied natural gas (LNG) that employ a condensing gas stream to adjust the gross heating value (GHV) of the LNG such that, upon vaporization, a natural gas product is obtained that meets pipeline or other commercial specifications. The condensing gas can be air, nitrogen, or in embodiments, NGLs such as ethane, propane, or butane, or other combustible hydrocarbon such as dimethyl ether (DME) depending on a desired change in GHV. In some embodiments, the methods and systems employ an integrated air separation plant for generation of nitrogen used as a condensing gas, wherein a cool stream of a heat transfer medium, such as water, ethylene glycol, other common heat transfer fluids, or mixtures thereof, obtained by heat transfer during vaporization of the LNG is used to pre-cool an air feed to the air separation plant, or to cool other process streams associated therewith.

Abstract: An end of life quenching device for a vapor lamp preventing damage to the lamp and socket structure. Mica is attached to a lead wire of a filament. As an emission material on the filament is consumed and the vapor lamp reaches the end of its life, the resulting increase in voltage causes an arc. The arc may extend down the lead wire. The hydrated OH group in the mica releases hydrogen, which extinguishes the arc within the vapor lamp. Damage is thereby prevented. The mica withstands the high pressing temperatures required in the manufacture of vapor lamps with quartz envelopes and used to generate ultraviolet radiation in germicidal applications.

Abstract: A residual current device includes a current transformer CT1 for sensing a differential current flowing in mains supply live L and neutral N conductors and a residual current actuator RCA for disconnecting the supply from a load when the differential current exceeds a predetermined level. The device also includes a circuit for detecting a double grounded neutral fault NF. Such circuit causes a current IZ to flow between the live and neutral conductors on the load LD side of the current transformer, such current being at least intermittently of sufficiently high amplitude and duration as to cause disconnection of the supply by the component of the current IZ flowing through the current transformer in the presence of a double grounded neutral fault.

Abstract: A wall-wash light fixture for providing substantially uniform wall illumination includes a light source mounted to direct emitted light to a substantially arcuate kick reflector. The substantially arcuate kick reflector directs the emitted light toward the wall.

Abstract: An end of life quenching device for a vapor lamp preventing damage to the lamp and socket structure. Mica is attached to a lead wire of a filament. As an emission material on the filament is consumed and the vapor lamp reaches the end of its life, the resulting increase in voltage causes an arc. The arc may extend down the lead wire. The hydrated OH group in the mica releases hydrogen, which extinguishes the arc within the vapor lamp. Damage is thereby prevented. The mica withstands the high pressing temperatures required in the manufacture of vapor lamps with quartz envelopes and used to generate ultraviolet radiation in germicidal applications.

Abstract: A laser-marking system that emits a laser beam through an acousto-optic deflector and onto a product to form dot-markings on the product. The acousto-optic deflector defects the laser beam depending on the frequency emitted to the acousto-optic deflector. A controller controls the laser to emit a laser beam when desired, and controls a digital frequency synthesizer to emit the desired frequency to the acousto-optic deflector. The user and/or controller may configure the laser-marking system to determine the efficiency of the acousto-optic deflector to determine correct amplitudes of dot frequencies to give the desired dot intensity on a product. Theses amplitudes are stored in memory as dot-marking profiles. The controller access the dot-marking profile to print dot markings onto products as desired. The user and/or the controller may also control scaling, vertical placement and overlapping of dot markings printed onto products.

Abstract: A system and method are provided for remotely enhancing digital images by communication of the digital images over a network to a remote processing facility. More particularly, the digital image routing method includes steps of receiving a digital image packet that includes a digital image and a customer preference parameter and transmitting the digital image packet to a remote digital image editing system selected according to the customer preference parameter. In addition, the digital image routing method may include the steps of enhancing the digital image based on the customer preference parameter, and transmitting an enhanced digital image packet that includes an enhanced digital image and an enhancement description packet that describes the enhancements made for each of the digital images.

Abstract: A mechanical hand grenade launcher comprised of a launch tube and spring-ven plunger for propelling a hand grenade to a target area. At the aft end of the launcher is a charging handle that when pulled rearward compresses a spring within the launcher tube. When the spring has been sufficiently compressed, the spring is then locked in the cocked position by a safety pin attached to a first lanyard. A hand grenade is loaded through the fore end of the launcher and the grenade's pull pin is attached to a second lanyard. When rearward force is applied to the second lanyard, the grenade pull pin is dislodged from the grenade. To launch the grenade, rearward force is applied to the first lanyard dislodging the safety pin which releases the spring. The force of the expanding spring imparted to the hand grenade propels the hand grenade out of the fore end of the launch tube toward the target area.

Abstract: A circuit breaker has at least one pair of electrical contacts of which one contact is mounted for movement relative to the other contact between first and second positions. One of the first and second positions corresponds to the contacts being closed and the other corresponds to the contacts being open. Resilient biassing means urges the one contact into the first position so as to maintain the contacts normally in the condition corresponding thereto. A magnet (such as a solenoid acting in active or passive mode) is capable of holding one contact in the second position against the action of the resilient biassing means, but is demagnetisable to permit the one contact to return to the first position.