Abstract: A mobile engine-generator vehicle that uses the same motor system for mobility as it does for electrical power generation. The mobile engine-generator vehicle is configured to provide electrical power to an external load via an electrical outlet mounted to the vehicle.

Abstract: A flexible pH sensor having a unique stacking of layers is described. The sensor may be used in various applications. Methods of manufacturing the flexible pH sensor are also described, including the manner in which iridium oxides are provided.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: A gaming system has a central authority connected to a plurality of gaming machines. Player activity is tracked at the gaming machines during regular gaming sessions and during virtual gaming sessions. Such data is transmitted to the central authority for providing player points in a player account file of a central database. Regular gaming sessions occur between player card insertion and player card removal. Virtual gaming sessions may occur prior to player card insertion as well as after player card insertion. For example, a coin-in event prior to player card insertion will establish a virtual session, and credits remaining on the credit meter at a card-out event will establish a virtual gaming session.

Abstract: An intra-aortic balloon pump catheter includes an inner lumen formed by a thin walled superelastic metal alloy tube, namely of nitinol, with an inside diameter sufficient for a guidewire and a small outside diameter which allows reduction of the outer lumen and related components by at least one size French while providing gas shuttle capacity between the lumens for conventional intra-aortic balloon pump operation. The outer lumen is a tube formed of co-extruded plastics to enhance the size reduction and capacity goals, with an inner nylon portion for strength and a relatively thin polyurethane outer portion for biocompatability, flexibility and compatibility for bonding to a thin polyurethane balloon. The proximal end sleeve of the balloon is stretched and then stress-relieved by heating with an internal heater on a mounting mandrel to effect a desired small diameter sizing.

Abstract: A method of forming intra-aortic balloons includes forming a balloon blank having a sleeve section at its proximal end. To reduce the diameter of the sleeve section of the balloon, the sleeve section is stretched longitudinally by gripping a first portion of the balloon blank at the distal end of the sleeve section, gripping a second portion of the balloon blank at the opposite end of the sleeve section and moving at least one of the gripped portions away from the other so as to reduce the diameter of the sleeve section. A heating element is positioned within the sleeve section to relieve the stress in the sleeve after stretching, by heating the sleeve section. The sleeve section is then cooled in order to preserve the sleeve section in its reduced diameter state thereby forming an intra-aortic balloon having a balloon blank with a reduced diameter sleeve section.

Abstract: A cooler chest has an open top which may be covered or uncovered by removable doors. A plurality of downwardly directed jets around the upper periphery of the chest forces cold air into the bottom of the chest, thereby displacing warm air from the chest and into the ambient atmosphere. The cold air in the chest is drawn through an evaporator coil for further cooling and then returned to the jets at the upper periphery for a continued cooling of the chest.

Abstract: An aquarium accessory includes a clear dome which is set in place on the habitat floor. The dome has a side opening and at least one top orifice. Air from an aeration system bubbles into the dome through a floor opening, thus creating a dry zone in the dome. Amphibious animals can enter the dry zone and satisfy their need to leave the water periodically, while being confined within the aquarium and remaining fully visible to observers. Air escapes through the top orifice, enabling constant air exchange within the dome. Dry zone volume is varied by adjusting air flow from the aeration system. The dome includes an outwardly projecting flange which enables aquarium gravel to anchor the dome within the aquarium. The flange includes perforations sustaining water circulation, as for filtration, within the aquarium.

Abstract: Two transistors are operated individually as emitter follower buffer amplifiers for R-Y and B-Y input signals and are operated together as an inverting summing matrix for deriving a G-Y output signal from the R-Y and B-Y input signals. All three output signals are "buffered" (i.e., provided by low impedance sources) and are subject to substantially equal delays. Advantageously, the circuit implementation requires only two transistors and three resistors to provide output signals which are (1) buffered, (2) matrixed and (3) delay compensated and which features improved reliability (due to reduced "parts count") and an economic implementation of the buffering, delay compensation and matrixing functions.

Abstract: A non-linear (e.g., "white stretch") processor and a brightness control processor are coupled in cascade between an input for receiving a video input signal to be processed and an output for providing a processed video output signal. A control signal for controlling the transfer characteristics of the non-linear processor is provided by an amplifier having a first input coupled to receive an average picture level (APL) indicating signal derived from the processed video output signal and having a second input coupled to receive a reference level signal supplied thereto. A brightness control signal is applied to a control input of the brightness control processor for controlling the brightness level of the processed video output signal.

Abstract: A food server for simultaneously cold storing foods to be served hot and foods to be served cold, and for heating the foods to be served hot while keeping cold the foods to be served cold. The server comprises a cabinet having a first insulated food storage compartment for cold storing foods to be served hot and a second insulated food storage compartment, adjacent the first compartment, for cold storing foods to be served cold. The server also includes a mechanism for refrigerating the first compartment, a mechanism for refrigerating the second compartment, a mechanism for heating the first compartment, and a control mechanism for selectively activating and deactivating the mechanisms for heating and refrigerating the first compartment.

Abstract: An edge connector (10) and method of assembly for making electrical contact with contact pad areas (11) along an edge of a circuit card (12), such as a thin film circuit or thick film circuit. The connector includes a spring clip (20) having a set of three spring fingers (21-22-23) projecting therefrom and offset to define a space (24) between the fingers into which the circuit card can be inserted (A) to pre-assemble the card with the clip. The central tine (22) is crimped about a solder preform (30) so as to deform the preform into an hourglass configuration in which the ends of the preform contact the surface of the card. The preform is then melted to form a solder joint (50) bonding the connector to the circuit card.

Abstract: A radial arm saw has separate and independently adjustable actuating means operated by a single lever for indexing the arm in spaced miter positions and for clamping it in infinitely variable miter positions, a novel arm clamp shoe, an adjustable arm index ring, adjustable guide means including adjustable guide means guiding vertical movement of the arm, composite arm indexing pin, bevel and swivel indexing pin ramps, a heel adjustment cam, and adjustable bevel clamp means.