Abstract: An engine air supply system includes an air source, which is a gas turbine engine in one example. A component, such as an environmental control system component, is interconnected to the air source by a conduit that includes a supply flow direction. A check valve is arranged in the conduit. The check valve includes a valve portion moveable in the supply flow direction from a closed position to an open position. The closed position is arranged at an acute angle relative to the supply flow direction. The check valve includes first and second valve portions that are hemi-elliptical in shape. The first and second valve portions are non-planar and arranged approximately 90 degrees apart when in the closed position. The first and second valve portions move toward one another from the closed position to the open position.

Abstract: Aspects of the invention relate to a system and method for operating a turbine engine assembly. The turbine engine assembly has a turbine engine having a compressor section, a combustor section and a turbine section. The combustor section has a lower T_PZ limit and the turbine engine has a design load. The assembly further includes at least one air bleed line from the compressor and at least one valve for controlling air flow through the bleed line. Control structure is provided for opening the valve to allow bleed air to flow through the bleed line when an operating load is less than the design load. The flow rate through the bleed line is increased as the operating load is decreased, reducing the power delivered by the turbine assembly while maintaining the T_PZ above a lower T_PZ limit. A method for operating a turbine engine assembly is also disclosed.

Abstract: In an air mixing arrangement wherein a primary fluid is introduced through an opening in a wall to be mixed with a secondary fluid flowing along the wall surface, the opening is airfoil shaped with its leading edge being orientated at an attack angle with respect to the secondary fluid flow stream so as to thereby enhance the penetration and dispersion of the primary fluid stream into the secondary fluid stream. The airfoil shaped opening is selectively positioned such that its angle of attack provides the desired lift to optimize the mixing of the two streams for the particular application. In one embodiment, a collar is provided around the opening to prevent the secondary fluid from contacting the surface of the wall during certain conditions of operation. Multiple openings maybe used such as the combination of a larger airfoil shaped opening with a smaller airfoil shaped opened positioned downstream thereof, or a round shaped opening placed upstream of an airfoil shaped opening.

Abstract: A power take-off system for a gas turbine engine includes a starter coupled to a second spool, and a clutch assembly coupled between the starter and a first spool, the clutch assembly configured to couple the first spool to the starter when starting the gas turbine engine assembly. A method of assembling a gas turbine engine assembly that includes the power take-off system, and a gas turbine engine assembly including the power take-off system are also described.

Abstract: A gas turbine engine combustor has forward bulkhead extending between inboard and outboard walls and cooperating therewith to define a combustor interior volume or combustion chamber. At least one of the walls has an exterior shell and an interior shell including a number of panels. Each panel has interior and exterior surfaces and a perimeter having leading and trailing edges and first and second lateral edges. A number of cooling passageways have inlets on the panel exterior surface and outlets on the panel interior surface. The shell has a plurality of holes for directing air to a space between the shell and heat shield and adapted for preferentially directing said air toward leading edge portions of first stage vanes of a turbine section.

Abstract: A component has an outer wall defining an interior chamber to be cooled. Electronic equipment is mounted within the outer wall in the chamber. A thermoelectric cooler has a cool node positioned to be within the chamber, and a hot node positioned outwardly of the outer wall. A fuel cell provides electricity to the thermoelectric cooler. The fuel cell is mounted outwardly of the outer wall.

Abstract: A cryocooler in which two independently moving flexure systems are split across a single magnetic structure, decreasing package size and increasing resistance to cantilevered mass sag due to external forces. A series of concentrically oriented flexure coupling shafts are provided that allow two independently moving flexure assemblies to be split across a single motor. A series of connectors are included on the forward side of the motor that pass through the outer shaft and allow the inner connecting shaft to be mounted to its flexures without interference. A series of close-out connections are included on the aft flexure stacks that makes assembly possible, providing firm mechanical connections without interference.

Abstract: A refrigerant flow dividing apparatus of a heat exchanger for refrigerating apparatus is provided with a minimal number of refrigerant flow regulating valves and suppresses increase in the size and costs of the apparatus. Refrigerant is supplied to paths of the heat exchanger for refrigerating apparatus including a heat exchanger for reheat dehumidification via a refrigerant flow divider provided with paths. Each path of the refrigerant flow divider is provided with a refrigerant flow regulating valve, and a predetermined one of the refrigerant flow regulating valves of the paths also functions as a reheat dehumidification valve.

Abstract: An automotive climate control system includes an evaporator, a variable speed compressor and a controller. The controller is configured to periodically alter a previous target evaporator temperature at a selected rate to generate a current target evaporator temperature, select a target compressor speed based on a difference between an actual evaporator temperature and the current target evaporator temperature, and command the compressor to operate at the target compressor speed.

Abstract: An outdoor control unit includes a first control unit, a second control unit, and a switching unit. The outdoor control unit controls the rotational speed of an outdoor fan. The first control unit executes a first control for controlling the rotational speed of the outdoor fan based on the operation frequency of the compressor. The second control unit executes a second control for controlling the rotational speed of the outdoor fan based on a parameter other than the operation frequency of the compressor. The switching unit executes a switching control for switching between the first control and the second control according to a predetermined switching condition, when a cooling mode is being operated under a low outside air condition. The low outside air condition refers to a state that the outside air temperature is lower than a first temperature.

Abstract: An internal cooling apparatus for automobiles includes a first expansion valve for spraying a coolant to a main evaporator through a high-pressure pipe, a compressor receiving the coolant evaporated in the main evaporator through a low-pressure pipe, a condenser receiving the coolant compressed in the compressor, and a plurality of sub-evaporators each being installed inside of a seat to contact an automobile passenger. One end of each of the sub-evaporators is communicated with the high-pressure pipe and the other end thereof is communicated with the low-pressure pipe such that part of the coolant sprayed through the first expansion valve is supplied to the compressor via each of the sub-evaporators.

Abstract: A heat pump system has a single heat source unit connected to at least one load unit to heat water to a high temperature. A hot water supply system 100 (heat pump system) includes a heat source unit 10 provided with a first compressor 11, a four-way selector valve 12 and a heat source heat exchanger 13, and a load unit 50 provided with a first flow controller 51, a first load heat exchanger 52, a second compressor 53, a second load heat exchanger 54, and a second flow controller 55. A main circuit A is formed by connecting the first compressor 11, the four-way selector valve 12, the heat source heat exchanger 13, the first flow controller 51 and the first load heat exchanger 52 with a liquid pipe 1 and a gas pipe 2 sequentially. A load refrigerant circuit B is formed by connecting the second compressor 53, the second load heat exchanger 54, the second flow controller 55, and the first load heat exchanger 52 with a load refrigerant pipe line 56 sequentially.

Abstract: Disclosed is an ice bank of a refrigerator comprising: a casing for storing ice pieces introduced through one side of an upper surface thereof, and a guide unit formed at one side of the casing so as to guide the introduced ice pieces to be stored in the casing with being uniformly distributed therein. According to the ice bank of the refrigerator the present invention, the ice pieces can be uniformly heaped in the ice bank. Accordingly, it is capable of preventing the ice pieces from overflowing resulting from that the ice pieces are heaped up around a spot where the ice pieces fall down in the ice bank and of facilitatingly containing the ice pieces in the ice bank.

Abstract: The present invention provides a system and method for cooling the bleed air supply in an on-board inert gas generation system. The gas generation system cools the bleed air using a turbocompressor in conjunction with heat exchangers. Exhaust from a regenerative heat exchanger providing air to the turbocompressor is ported to a ram air outlet using a flow-restriction/ejector unit.

Abstract: The present invention relates to a cool air supply structure of a storage receptacle for a refrigerator. The present invention comprises one or more box casings detachably installed in a refrigerating chamber, each box casing having a mounting space and a channel through which cool air flows, the cool air being supplied from a cool air supply source through a cool air supply port formed in a side surface of the refrigerating chamber; and one or more storage receptacles, each storage receptacle being withdrawably installed in the mounting space, wherein food accommodated in an accommodation space provided in the storage receptacle is indirectly cooled by the cool air that flows through the channel. According to the present invention, there is an advantageous effect in that the food accommodated in a plurality of storage receptacles can be stored to be fresher by indirectly cooling the food and simultaneously the supply of cool air can be controlled depending on the use or not of the storage receptacles.

Abstract: A refrigerator which includes an outer case defining the outer appearance of the refrigerator, the inner case received in the outer case and defining a storage compartment, the insulation member filled in a gap between the outer case and the inner case for heat insulation, and a noise attenuation member disposed between an outer surface of the inner case and the insulation member to induce a sliding movement between the inner case and the insulation member. The insulation member is slidable relative to the insulation member when the inner case expands or contracts in accordance with a variation of temperature, whereby the generation of frictional noise due to friction between the inner case and the insulation member can be greatly reduced.

Abstract: A cryogenic refrigeration system includes a cryogenic heat exchanger system adapted for vaporizing a liquid cryogen and using the gaseous cryogen to cool heat transfer fluid and a heat transfer cooling circuit that cools the lyophilization chamber as well as the condenser. The disclosed heat transfer cooling circuit includes a primary recirculation loop adapted for cooling the lyophilization chamber with the heat transfer fluid, a secondary recirculation loop adapted for cooling a condenser with the heat transfer fluid, and one or more valves operatively coupling the cryogenic heat exchanger system, the primary recirculation loop, and the secondary recirculation loop.

Abstract: A method for making a float glass convertible into a glass ceramic, by which a largely crystal fault-free glass can be produced. In this method the glass is cooled from a temperature (TKGmax), at which a crystal growth rate is at a maximum value (KGmax), to another temperature (TUEG), at which practically no more crystal growth occurs, with a cooling rate, KR, in ° C. min?1 according to: KR UEG KG max ? ? ? ? T UEG KG max 100 · KG max , wherein ?T=TKGmax?TUEG, and KGmax=maximum crystal growth rate in ?m min?1. The float glass has a thickness below an equilibrium thickness, a net width of at least 1 m and has no more than 50 crystals with a size of more than 50 ?m, especially no crystals with a size of more than 10 ?m, per kilogram of glass within the net width.

Abstract: A method and a device are disclosed for follow-up treatment of the contour of the surface of at least one optical lens, in particular a microlens which is made of glass or a glass-type material and which has a convex lens surface delimited by a circumferential line abutting on a plane section surrounding the circumferential line and which has a lens underside facing the convex lens surface. Along the circumferential line of the optical lens on the plane section is placed a device perfectly matching the circumferential line and at least laterally bordering the convex lens surface, the optical lens is heated to a temperature of at least the transformation temperature of glass or glass-type material, pressure equalization prevails between the convex lens surface and the lens underside, after a certain period of time, during which the optical lens undergoes the temperature treatment and subsequent cooling below the transformation temperature, the device is removed from the optical lens.

Abstract: The invention relates to an installation and a method for producing glass stoppers which are provided with a head portion and are used for sealing wine bottles and sparkling wine bottles. The installation comprises a mold for producing glass stoppers, a feeder system for supplying the mold with molten glass, a multistation press, and a removing and handling system for the finished glass stoppers.

Abstract: In a glass processing method according to the invention, in the case of performing chemical vapor deposition or diameter shrinkage of a substrate glass tube G by relatively moving a heating furnace 20 comprising a heating element 21 for annularly enclosing the circumference of the substrate glass tube in a longitudinal direction of the substrate glass tube G with respect to the substrate glass tube G in which an outer diameter is 30 mm or more and a wall thickness is 3 mm or more and is less than 15 mm and an ovality of the outer diameter is 1.0% or less using a glass processing apparatus 1, a temperature of at least one of the heating element 21 and the substrate glass tube G is measured and the amount of heat generation of the heating element 21 is adjusted based on the measured temperature.

Abstract: This method for drawing a quartz glass optical component shortens the pulling process and minimizes loss of material. An end face of a quartz glass hollow cylinder forms a tapered end portion to an attachment piece of quartz glass having a bore. The inner bore of the hollow cylinder and the bore of the attachment piece are at least temporarily interconnected fluidically as a passage bore. A cleaning fluid is passed through the inner bore of the hollow cylinder and the passage bore. A core rod of quartz glass, which rests on a contact surface of the attachment piece, is inserted into the inner bore of the hollow cylinder, and the hollow cylinder is continuously supplied to a heating zone, heated therein so as to form a drawing bulb, and the component is continuously drawn therefrom.

Abstract: An optical fiber apparatus and manufacturing method thereof includes: forming a bare optical fiber by melting and deforming an optical fiber preform; cooling the bare optical fiber after the bare optical fiber forming step by passing it through a flow channel of a cooling unit through which cooling gas flows; and forming a protective coating layer by supplying a molten resin to a periphery of the bare optical fiber after the cooling step thereby forming an optical fiber. The cooling gas flowing toward a vertically lower end of the flow channel is blocked by the molten resin used to form the protective coating layer, and carbon dioxide gas is supplied toward the flow channel from a position which is vertically below the supply position of the cooling gas and vertically above the blocking position of the molten resin.

Abstract: An acoustic panel for reducing the transmission of noise therethrough is provided. The acoustic panel may include a sound-absorbing surface with a plurality of convex and concave structures. The convex and concave structures may be organized in a regular array and may be spatially arranged to be alternating with one another. A dishwasher may use such an acoustic panel including a panel of sound absorbing material by placing such a panel inside the door, in or around the walls of the tub of a dishwasher, or the panel can also be used to reduce the transmission of noise with other products. A method of inserting a panel of sound-absorbing material into the door of a dishwasher is also provided. The panel may include protrusions extending from one of its surfaces in order to engage a supporting surface of the product to which it is attached.

Abstract: Electromagnetic forming can lead to better formability along with additional benefits. The spatial distribution of forming pressure in electromagnetic forming can be controlled by the configuration of the actuator. A type of actuator is discussed which gives a uniform pressure distribution in forming. It also provides a mechanically robust design and has a high efficiency for flat sheet forming.

Abstract: A swing bar is connected to a slide by attaching a first pivot to one end of the swing bar, and a bending die is mounted to the other end. A connecting piece is provided on the upper surface of the swing bar, and a second pivot capable of freely turning is inserted into a through-hole formed in the connecting piece, and then fitted into a guide groove formed parallel to the wire feeding direction in a guide member mounted to a second bending unit. Motors are connected to the slide and the second bending unit, respectively.

Abstract: When forming a dowel section by performing press working on each of portions constituting side walls of a buckle base member, a die having a negative clearance with a punch portion (2) is used whose length or diameter is larger than a length or diameter of a die portion (3). The dowel section is required as a guide for a tongue inserted into a buckle and as a load receiver when a latch member is elongated at a time of collision etc. When a ratio C/t of a clearance C between the punch portion and the die portion with respect to a plate thickness t of the buckle base member is set within a range of ?(30 to 5) %, no crack is generated in the root of the dowel section, and the dowel section of a shear cross-section length ?0.25×t, a shear cross-section starting height ?0.7×t, and a height of (0.70 to 0.95)×t is easily obtained, and the perpenducularity of the dowel section side surface is enhanced.

Abstract: An exemplary metallic cover (20) includes a bottom base (21) and a side wall (22) extending from the bottom base. The side wall is formed by cold forging so that a thickness of the side wall is greater than that of the bottom base. A method for making the metallic cover described above, includes: drawing a metallic sheet into a preformed cover (30) having a bottom base (31) and a number of side walls (32); forging the preformed cover by a first forming die (200) to thicken the side walls; forging the preformed cover by a second forming die (300) to further thicken the side walls; and machining an end of each of the side walls of the preformed metallic cover to form the metallic cover.

Abstract: By constructing clamping jaws, which are employed for applying the desired force to the rings to be crimped, and mounting the clamping jaws in a plane which is substantially perpendicular to the plane in which the handle members are positioned or constructing the clamping jaws for arcuate movement relative to the handle members, an easily employed, force generating, crimping tool assembly is achieved wherein the clamping jaws cooperatively associated with the handle members are positioned at a fixed angle relative to the handle members, or are constructed for being arcuately pivotable relative to the handle members. The crimping tool assembly is able to provide the desired crimping forces to rings mounted in areas in which access is virtually impossible to achieve using prior art tool assemblies. Alternatively, if desired, the clamping jaws may be mounted to the handle members at any desired fixed angle.

Abstract: The present invention relates to means for feeding blanks into the thread rolling part of a thread rolling machine in accurate timing and accurate position. A transport screw for transporting blanks e.g. in a thread rolling machine is disclosed, said transport screw comprises a transport helix for transporting a blank along said transport screw when said transport screw rotates, said transport screw further comprises a feeding area being a widening of said transport helix, whereby said feeding area can receive and feed said blank into said transport helix upon rotation of said transport screw. Further, a method of feeding blanks into a transport screw and a feeding system comprising a transport screw, a blank height adjustment mechanism and a blank alignment mechanism are disclosed.

Abstract: A method of manufacturing an exhaust gas sensor allows the manufacturer to selectively control the air-voltage range of the manufactured sensor between a first air-voltage range and a second air-voltage range. The sensor includes a signal wire and a ground wire. The method includes using a high nickel alloy for both of the signal wire and the ground wire to manufacture a sensor in the first air-voltage range, and using a high nickel alloy for only one of the signal wire and the ground wire to manufacture a sensor in the second air-voltage range. The air-voltage ranges are those associated with a lean-application normalized air/fuel ratio of ?>1.

Abstract: A gas chromatograph controlled by a pair of microprocessors to have improved thermal maintenance and process operation. The microprocessors are operable to run independently of each other, with one microprocessor controlling heaters and other control devices and the other microprocessor running a graphical user interface. The two microprocessors are separated by a gas chromatograph assembly that includes one or more separation columns.

Abstract: A device that carries out a method for measuring permeability to a gas sample through a container (2) comprises an inlet duct for the gaseous carrier, in particular, nitrogen, both as inlet in the container (2) and as inlet in the chamber (1) and out of the container (2) of which permeability has to be measured. The inlet duct that exits in the container (2) comprises two ducts (11 and 8), whereas the inlet duct that exits out of the container (2) comprises two ducts (6 and 7). Such inlet ducts have an origin in common in order to allow the distribution between them of the flow (200) of gas carrier as input. An inlet duct is provided (10) for a test gas flow, such as oxygen, which ends in the duct (7) to be measured, with the gas carrier in the chamber (1). A gas-mass regulator is provided for each inlet duct (5, 4 and 3).

Abstract: The present invention a portable universal electric radiator cap pressure tester, having a multiple of common radiator cap filler necks fixed on a dash board. The fixed filler necks simulate the filler neck openings on a vehicle's radiator or overflow reservoir. This allows the user the ability to quickly install a common radiator cap on the face of the tool and pressurize the radiator cap to its maximum recommended pressure. This gives the user the knowledge if a used radiator cap will hold its recommend pressure and provide a water tight seal during operation on a vehicle when the engine cooling system is under operating pressure.

Abstract: A method for testing the integrity of welds used to secure a nozzle to a vessel and the like comprises forming a sealed space within the nozzle by providing a blind against the flange and a sealing plate within the vessel and filling the space with a pressurizing fluid. The sealing plate is not biased against the flange. As such, the method of the invention simulates normally occurring axial expansion stresses within the nozzle thereby providing a more accurate test. The apparatus of the invention comprises a blind flange for sealing the flange face and a back plate for positioning against the inner surface of the vessel. The apparatus includes a biasing means for urging the back plate against the vessel wall. In one embodiment, the biasing means includes a front plate located outside of the vessel and connected to the back plate. In another embodiment, the biasing means comprises a plurality of magnets for engaging the vessel wall.

Abstract: A method of measuring the deposition of a composition onto a substrate. This information can be used to correlate how the composition will deposit on sanitary ware, such as shower cubicles, baths, and wash basins. The composition can be a liquid personal cleansing composition.

Abstract: An article and method for stabilizing a rock chip. The article in one embodiment of the invention includes a laminar rock chip substantially surrounded by and imbedded within a plug having a solid material, the plug forming a top planar surface and a bottom planar surface substantially parallel with the top planar surface, the laminar rock chip forming a contact surface portion exposed at the top planar surface of the plug, a laminar plane of the laminar rock chip being substantially perpendicular with the top planar surface.

Abstract: Method and device for operating a particle sensor arranged in an exhaust tract of an internal combustion engine of a motor vehicle. The particle sensor including a sensor carrier having two sensor electrodes arranged at a predetermined distance from one another on one side of the sensor carrier. The two sensor electrodes are exposed to an exhaust gas stream in the exhaust tract. The at least two sensor electrodes are acted upon with a collective potential, the collective potential having a value such that electrically charged particles are attracted out of the exhaust gas stream in the exhaust tract. The attracted particles in this case accumulate on and/or between the two sensor electrodes.

Abstract: A chassis dynamometer is disclosed having a dynamometer drum member, a housing member to house a stator, a shoe member to form a gap with the dynamometer drum member, an extension shaft member to radially vary the gap dimension. The extension shaft member may extend radially from the housing member, and the extension shaft member may include external threads. The extension shaft member may include a smooth portion, and the extension shaft member may cooperate with a collar member. The extension shaft member may include a hole member, and the extension shaft member may include a fastening member. The collar member may include a shoulder member, and the extension shaft member may include a flange member.

Abstract: A digital tire pressure gauge has a housing having a first and a second end. A port at the first end of the housing is adapted to engage with and open a needle valve of a tire valve stem. The gauge also includes a pressure sensor and a processor in electronic communication with the pressure sensor. A bleed valve is disposed in the housing and a bleed lever is in contact engagement with the bleed valve. When the port is coupled to the tire valve stem, in a first operational mode, the bleed valve is closed and an air pressure measurement is obtained. In a second operational mode, pressing the bleed lever causes the bleed valve to open and to allow air to be bled out from the tire via the pressure gauge.

Abstract: A load measuring system for measuring the loads on a foundation for wind turbines is disclosed. A load measuring device is mounted on a rock anchor pad for a turbine and measures the loads on the anchor. Signals from the load measuring device are transmitted to a remote location. The load measuring device is installed on selected rock anchor pads, distributed evenly about the foundation pad. The signals from the load measuring are transmitted to a control station at a remote location, thereby enabling continuous monitoring of the loading conditions on the rock anchors. The signals from a plurality of load measuring systems may be transmitted to the control station, so as to allow monitoring of a group of wind turbine foundation pads at a single location.

Abstract: Disclosed is a liquid detection unit having a liquid detection chamber, a detection portion including a detection space communicating with the liquid detection chamber via a through hole of a detection portion installation member and a piezoelectric sensor which detects remaining vibrations, and a movable member including a detection space sealing surface which is urged by an urging member and thus comes to abut against one surface of a detection portion installation member. The liquid detection chamber includes an abutting surface abutting against a second sealing surface being in contact with a first sealing surface of the movable member and the detection portion installation member. When a distance between the first sealing surface of the movable member to the detection space sealing surface is defined as L1 and a distance between the second sealing surface of the liquid detection chamber to the abutting surface is defined as L2, the relationship L1>L2 is satisfied.

Abstract: A formation testing probe assembly comprising an elongated packer having a surface configured to be urged by the probe assembly towards a wall of a wellbore extending through the formation. The formation testing probe assembly further comprises a plate embedded in the elongated packer and including a central structural portion extending along a centerline of a substantial length of the plate, wherein the central structural portion is substantially thicker than remaining portions of the plate.

Abstract: Caliper measurements made during rotation of an imager on a logging string are processed to estimate the location of the imager, and size and shape of the borehole. A piecewise elliptical fitting procedure may be used. These estimates may be used to correct measurements made by a standoff-sensitive formation evaluation sensor such as a neutron porosity tool. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: Example methods and apparatus to perform pressure testing of geological formations are disclosed. A disclosed example method comprises positioning a testing tool in a wellbore formed in the geological formation, sealing a sample interval around the testing tool, sealing a first guard interval around the testing tool and adjacent to the sample interval, reducing a first pressure in the sample interval, reducing a second pressure in the first guard interval, maintaining a volume of a first chamber fluidly coupled to the sample interval during a time interval, and measuring a plurality of pressure data for a fluid captured in the first chamber during the time interval.

Abstract: Provided is a flowmeter with a flow tube through which fluid flows; a cooling apparatus adapted to cool a part of the flow tube; a first temperature detecting section for detecting the temperature of the flow tube cooled by the cooling apparatus; a second temperature detecting section for detecting the temperature of the cooling apparatus; a third temperature detecting section for detecting the temperature of a non-cooling area upstream of a cooling area in the flow tube; and an information processing section, which controls the cooling apparatus make a difference between the temperature detected by the second temperature detecting section and the temperature detected by the third temperature detecting section to be a prescribed value, and calculates the flow rate of the fluid flowing in the flow tube.

Abstract: The present invention relates to a sender unit for sensing the level of remaining fuel in a fuel tank utilizing a non-contacting sensor. The sender unit for sensing the level of remaining fuel in a fuel tank of a vehicle is fixed in the fuel tank to sense the level of the remaining fuel by detecting the position of a float that floats depending on the level of the liquid surface of the fuel.

Abstract: A SAW-based humidity sensor apparatus with integrated signal conditioning on the same substrate. A micro-electronic circuit can be processed at a silicon substrate to obtain on-chip signal conditioning internally and the silicon substrate can be covered with a protective layer of, for example, silicon nitride. Surface acoustic wave media (e.g., a ZnO film) can be coated on top of the protective layer. A humidity sensitive film and two sets of interdigital transducers can then be deposited on the surface acoustic wave media. The humidity sensitive film absorbs moisture and changes the receiving frequency at the two sets of interdigital transducers. The output from the two sets of interdigital transducers can be processed by the micro-electronic circuit, which eliminates common mode noise and generates an output signal proportional to the humidity value tested.

Abstract: A duct detector housing includes a housing cover and a housing body defining a midline between the center of a detector and a printed circuit board within said body. Gas inlet and outlets are off axis of the midline to allow water that collects in conventional housing to drain from the housing. A maintenance mode button associated with a duct detector housing cover that is secured to a housing body of the housing provides a preselected time period during which removal of the cover is independent of a cover removal alarm. A printed circuit board within the housing has dedicated terminal blocks providing grouped connections with each of the groups segregated from another. An improved duct detector terminal has a hole in the terminal adapted to receive a test meter probe therethrough to provide an electrical contact between the wire.

Abstract: An inertial force sensor is provided in which each of switches is connected in parallel with each of resistors of low-pass filter and high-pass filter, respectively, and capacitor of high-pass filter can be boost charged by making switches on without mediate resistors.