329results about How to "Simple geometry" patented technology

Systems for THz transmission using new types of THz waveguides with low loss, negligible group velocity dispersion and structural simplicity are described herein. The THz system incorporates the use of a waveguide with two or more substantially parallel conductive elements which may enable many new THz sensing applications. It is now possible to direct the THz pulse inside of containers or around corners, where line-of-sight optics are not practical. Moreover, the systems allow use of either radially polarized or linearly polarized THz antennas. The disclosed systems are compatible with existing terahertz generation and detection techniques.

A compact write element includes a conductive shield layer, an insulating write gap layer, a pole pedestal, a coil, and a conductive pole layer, and, in some embodiments also includes a backgap. The pole pedestal and the coil, and, in some embodiments the backgap, constitute a self-aligned array of components that may be formed in a single masking operation to allow for very tight tolerances between the components for a shorter yoke length. The pole layer is substantially flat and parallel to the conductive shield layer, providing for a shorter stack height. Also, a compact MR read / write head includes such a write element and a magnetic data storage and retrieval system includes the compact MR read / write head having such a write element.

Printed circuit techniques and two-shot molding techniques are used to form a metal radiating element, a metal ground plane element, a metal antenna feed, a metal short-circuiting strip and metal capacitive loading plates within small antennas that are buried within transmit / receive radio-devices such a mobile cellular telephones. Balanced and unbalanced, single-feed, two and three band antennas are provided wherein the radiating element is laterally spaced from the ground plane element, to thereby provide an antenna having a very low profile or height, including antennas wherein the ground plane element and the radiating element are placed coplanar on the same surface of a PCB. A thin dielectric carriage on a PCB allows for the metal capacitive loading plates to be placed on the sidewalls of the dielectric carriage, to thereby provide reactive loading of a radiating element that is on the top surface of the dielectric carriage.

A siphonic gravity-powered toilet is provided that is a rimless toilet and includes a toilet bowl assembly having a body and an inlet for receiving fluid. The toilet bowl has an interior bowl surface with an upper peripheral portion configured to have a shelf formed therein below an upper peripheral edge of the toilet bowl. The rimless toilet includes a jet having a jet inlet, an outlet and at least one jet channel. A manifold is included which is configured so that fluid entering an inlet of the toilet bowl assembly divides into a portion that enters the inlet of the direct-fed jet and a portion that enters an interior area of the toilet bowl. At least one toilet bowl inlet port is positioned at an upper rear portion of the toilet bowl. The at least one inlet port is configured to receive fluid from the manifold into the interior area of the toilet bowl such that at least a portion of the fluid travels along the shelf of the toilet bowl prior to passing into a lower portion of the toilet bowl.

A railway vehicle bogie, including at least two axles, at least one side member being provided to connect the axles to a central part of the bogie. The side member is formed by an elastic blade shaped as a vertically oriented continuous flattened loop which may be made of composite material or of metal. A process for manufacturing a side member of composite material consists in winding a continuous lap of reinforcing fibers over at least one turn around two studs so as to form a loop, and polymerizing a resin-based matrix around the fibers.

A simplified general model and an associated estimation algorithm is provided for modeling visual data such as a video sequence. Specifically, images or frames in a video sequence are represented as collections of flat moving objects that change their appearance and shape over time, and can occlude each other over time. A statistical generative model is defined for generating such visual data where parameters such as appearance bit maps and noise, shape bit-maps and variability in shape, etc., are known. Further, when unknown, these parameters are estimated from visual data without prior pre-processing by using a maximization algorithm. By parameter estimation and inference in the model, visual data is segmented into components which facilitates sophisticated applications in video or image editing, such as, for example, object removal or insertion, tracking and visual surveillance, video browsing, photo organization, video compositing, etc.

A system for coupling teraherz (THz) radiation to a coaxial waveguide comprises an antenna that generates THz radiation having a mode that matches the mode of the waveguide. The antenna may comprise a pair of concentric electrodes, at least one of which may be affixed to or formed by one end of the waveguide. The radiation may have wavelengths between approximately 30 μm and 3 mm. The waveguide may comprise an inner core and an outer wall defining an annular region. A terahertz sensor system may comprise a terahertz antenna comprising first and second concentric electrodes, means for generating a field across the trodes and means for triggering the emission of terahertz radiation, a first waveguide having first and second ends, said first end being coupled to said antenna so as to receive at least a portion of said terahertz radiation, and a sensor for detecting said terahertz radiation.

Systems for THz transmission using new types of THz waveguides with low loss, negligible group velocity dispersion and structural simplicity are described herein. The THz system incorporates the use of a waveguide with two or more substantially parallel conductive elements which may enable many new THz sensing applications. It is now possible to direct the THz pulse inside of containers or around corners, where line-of-sight optics are not practical. Moreover, the systems allow use of either radially polarized or linearly polarized THz antennas. The disclosed systems are compatible with existing terahertz generation and detection techniques.

A heat loss gauge for measuring gas pressure in an environment includes a resistive sensing element and a resistive compensating element. The resistive compensating element is in circuit with the sensing element and is exposed to a substantially matching environment. An electrical source is connected to the sensing element and the compensating element for applying current through the elements. The current through the sensing element is substantially greater than the current through the compensating element. Measuring circuitry is connected to the sensing element and the compensating element for determining gas pressure in the environment to which the sensing element and compensating element are exposed based on electrical response of the sensing element and the compensating element.

A sensor element (30) measures a Hall voltage generated by a movable magnet (16). For this purpose, the sensor element (30) comprises a ceramic base element (40) which has connected therewith a detector element (46). The detector element (46) is protected with the aid of a cover element (42) against an aggressive environment produced by fuel or fuel vapors in a fuel tank (34) of a motor vehicle. The detector element (46) has connected therewith electric conductors (60) which are routed through the cover element (42) and / or the base element (40) for connecting the detector element (46) with a voltage source and / or an evaluation unit. The cover element (42) and possibly the base element (40) reliably encapsulate the detector element (46) against the aggressive environment such that by simple constructive measures the service life of the sensor element (30) is increased.

The present invention provides a method for determining the Frequency Response Function for a collection of tools in a CNC machine by taking four measurements (three of which are independent) on a single tool, held in the same or similar tool holder, spindle and CNC machine. The method uses inverse Receptance Coupling Substructure Analysis (RCSA) to obtain the receptances of the system, exclusive of the single tool. Standard (forward) RCSA is then used with these receptances and certain analytic expressions for the receptances of a freely supported tool to obtain the FRF for each tool in the collection of tools. This information can be used to predict stable, chatter-free depths of cut over a range of spindle speeds in CNC machining, identifying both the limiting depth of cut at any speed as well as special spindle speeds where unusually large, chatter-free depths of cut are available.

A gas turbine combustion liner is disclosed having an alternate interface region between it and a transition duct where the cooling effectiveness along the aft end of the combustion liner is improved, resulting in extended component life, while utilizing a simpler combustion liner geometry. The region of the combustion liner proximate its second end comprises a plurality of spring seals that seal against a transition duct while admitting a cooling fluid to pass into a passage, formed between the combustion liner and spring seals, that feeds a plurality of cooling holes located in the combustion liner proximate the liner second end. Depending on the cooling requirements, the cooling holes can be angled both axially and circumferentially to maximize the cooling effectiveness.

Fluid flow is directed into a multiplicity of slit nozzles positioned so that the fluid flow is directed into a gap between the nozzles and (a) a number of receiving chambers and (b) a number of exhaust chambers. The nozzles and chambers are select so that the fluid flow will be separated into a first particle flow component with larger and a second particle flow component with the smaller particles.

The present invention relates to an ultra-wideband (UWB) antenna, which comprises: a rectangular aperture portion, formed from a ground plane of a printed circuit board and having an aperture; and a co-plane feeding structure, having a horizontal portion and a vertical portion, wherein the vertical portion is perpendicular to the horizontal portion, and the vertical portion is disposed in the aperture and connected with an external terminal. The ultra-wideband (UWB) antenna of the present invention can receive the wireless signal with 3.1˜10.6 GHz band, and have a very compact area (13 mm×23 mm) and is easy to be mass produced. Furthermore, a parasitism element can be added into the co-plane feeding structure, so as to reject the in-band interferences from the existing systems like 5˜6 GHz signals of wireless LAN.

The present invention relates to a front aircraft part (1) comprising a non-pressurised landing gear housing zone (28) designed to house a front landing gear (30) in a retracted state, as well as a pressurised zone (2) adjacent to the non-pressurised landing gear housing zone. According to the invention, the pressurised zone is delimited by a set of walls among which only a substantially flat-shaped sealed partition wall (10) also participates in delimiting the non-pressurised landing gear housing zone (28).

An engine assembly including an engine mount, the engine mount including a rigid structure including a box and a mounting system positioned between the engine and the rigid structure. This mounting system includes an aft attachment. The assembly further includes a thermal protection system for the box, including a preferably ventilated duct forming a heat barrier and extending between the box and the engine. The duct extends rearward beyond the aft engine attachment.

A raised floor structure includes a vibration-damping platform and a support structure. The vibration-damping platform includes a bottom plate having a supporting face; a top plate located at a predetermined height position above the bottom plate to thereby define a vibration-buffering space therebetween; and a damping pad disposed in the vibration-buffering space between the top plate and the bottom plate. The support structure includes a plurality of supporting members connected to the supporting face of the bottom plate and located between the supporting face of the bottom plate and a foundation structure for supporting the vibration-damping platform thereon. Meanwhile, a raised space is formed between the bottom plate of the vibration-damping platform and the foundation structure.

A bi-state-switch low-voltage fabrication technique is able to be used to construct microfluidic systems leveraging well-established low-voltage semiconductor fabrication technologies to achieve high-voltage droplet actuation applications with lower costs, smaller device sizes, and also less time. Also, the electrode cells are able to be made using the well-established low-voltage CMOS fabrication technologies, which can be used to make large-scale integrated microelectronics and microfluidics.

Provision is made of a cutting tool, in particular a drill or a milling cutter, having a shank and a chip transporting portion, which receives a cutting insert, wherein the cutting tool is a hybrid composite body. Furthermore, a chip transporting portion for a cutting tool and also a process for producing a cutting tool are described.

Disclosed is a stator device adapted to be arranged in an electrical machine, where the electrical machine further comprises a moving device,where the stator device is a multi-phase stator device, where the phases are arranged side-by-side in a direction perpendicular to direction of motion of the moving device, and where each phase comprises a first stator core section having a set of teeth, a second stator core section having a set of teeth, and a coil, and where the teeth are arranged to protrude towards the moving device; andwherein at least two neighbouring phases share a stator core section, so that the first stator core section of a first phase and a second stator core section of a second phase is formed as a single unit.

A crystal-growing furnace with a heating improvement structure includes a furnace body, a supporting table, a top heater, and a bottom heater. When the silicon material around the top heater is melted, molten silicon slurry will flow directly into the spacing among particles of the silicon material. This will expedite internal part of the silicon material to absorb energy. As a result, a desirable cycle will be established to expedite melting the whole silicon material in the crucible. The crucible is heated at the bottom thereof by the bottom heater directly so as to enhance efficiency in melting the silicon material in the crucible, and to save energy and time consumed by the crystal-growing furnace. Further, since both of the top and the bottom heaters are symmetrical with one another, the crucible can be heated uniformly. This not only saves energy and makes the heating job convenient, but also saves cost in manufacture.

The clamping system comprises a collar (10) having a band (12) that has two flanks (13A, 13B), between which an inside trough (14) is defined that receives projecting clamping surfaces (1A, 2A) of two tubes (1, 2) to be assembled together. The system further comprises a plurality of individual retaining clips (20) distributed angularly around the first flank (13A), each clip having an inside branch (30) and an outside branch (32) facing each other, and between which the first flank is pinched, and a retaining portion (34) that, in the pre-attached state, is suitable for co-operating with the clamping surface (1A) of the first tube (1), one of the branches carrying a first bearing zone (36) that co-operates with a first bearing surface (13′A) of the collar that faces towards the axis (A) of said collar.