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1578results about How to "Change position" patented technology

Loop antenna with a parasitic radiator

ActiveUS20070182658A1Radiation efficiency be lowBoost performanceAntenna arraysSimultaneous aerial operationsRadio frequencyFrequency band
It is an objective of the present invention to provide an antenna construction that allows the thickness of an antenna structure be lower than that of planar antennas according to prior art without sacrificing the radiation efficiency at the desired RF-bands as 900 MHz GSM and 1800 MHz / 1900 MHz DCS / PCS. A further object of the invention is to provide an antenna construction that is insensitive to changes in positions of electrically conductive objects in the vicinity. The objectives of the invention are achieved by a loop antenna structure equipped with an electrically conductive parasitic radiator that is electro-magnetically coupled with the antenna loop. Performance at the DCS / PCS bands can be further improved by using an electrically conductive tuner element that provides a stronger electromagnetic coupling between the antenna loop and the parasitic radiator.
Owner:NOKIA TECHNOLOGLES OY

Method for preparing wide wave reflective film by using polymer stabilized cholesteric phase liquid crystal material

InactiveCN101706625AControl the degree of swellingTo achieve the purpose of broadband reflectionNon-linear opticsOrganic solventMass ratio
The invention belongs to the field of application of liquid crystal materials, and provides a method for preparing a wide wave reflective film by using a polymer stabilized cholesteric phase liquid crystal material. The polymer stabilized cholesteric phase liquid crystal material can be widely used in the fields of light enhancement films of liquid crystal displays, energy-saving glass sticking films and the like. The method comprises a process that the wide wave reflective film is prepared by evenly mixing a non-photopolymerisable nematic phase micro-molecule liquid crystal, a photopolymerisable nematic phase liquid crystal monomer, a chiral compound and a photoinitiator in a certain mass ratio; and a polymer network is formed through ultraviolet radiation. In the method, a liquid crystal box is soaked in organic solvent to extract the unreacted micro-molecule liquid crystal so as to obtain a pure polymer network; a coarse-pitch cholesteric phase liquid crystal is injected into the system; and ultraviolet polymerization is performed again to fix the swelling process of the polymer network so as to form the polymer stabilized cholesteric phase liquid crystal material with wide wave reflection. The method has the advantages that the material system and the manufacturing process are simple, the material source is extensive, and the reflected wave width and the reflection position of the system can be adjusted by changing the reflection positions of the polymer network and the injected cholesteric phase liquid crystal.
Owner:UNIV OF SCI & TECH BEIJING

Mobile-type laser processing device for on-line processing surface of steel rail

The invention discloses an online double-station mobile-type laser processing device for strengthening, toughening and repairing the surface of a steel rail by lasers. The online double-station mobile-type laser processing device particularly comprises a double-station mobile-type laser processing device, two sets of laser processing heads, two sets of laser beam motion actuating mechanisms, a control system and a laser guiding system. The mobile-type laser processing device of the invention has the advantages of small size and light weight, so the mobile-type laser processing device is suitable for manual transportation; by using the dedicated control system, the control is convenient; the operation can be conducted during the 'skylight' time for rail overhaul, particularly, the mobile-type laser processing device can simultaneously strengthen, toughen and repair various parts of the surfaces of linear steel rails, curved steel rails, guard rails, turnout junction and other double rails, more particularly, the rails are subjected to laser phase-change quenching, laser surface-melting quenching, laser cladding, laser alloying, laser texturing, laser shock processing and other treatment, thus greatly increasing the abrasion resistance of the strengthened steel rails. The online double-station mobile-type laser processing device has the characteristics of high processing efficiency, high portability, high processing accuracy and easy control.
Owner:WUHAN HIVALUE INTELASER LTD

Anti-Snore Bedding Having Adjustable Portions

An adjustable bed includes a stationary frame, a first head deck mattress support member supported by the frame, a second seat deck mattress support member supported by the frame and pivotally coupled to the head deck mattress support member, a sensor assembly adapted to detect a sound associated with human snoring, and a motorized drive assembly operatively coupled to the sensor assembly and to the first mattress support member. The adjustable bed may be such that detection of the snoring sound actuates the motorized drive assembly thereby causing relative movement of the first mattress support member with respect to the second mattress support member. The sensor assembly may further be adapted to recognize a sound associated with snoring of a particular person and actuation of the motorized drive assembly may move the first mattress support member between an inclined position and a horizontal flat position. The sensor assembly may further be adapted, after cessation of the snoring sound for a specific length of time, to return the first mattress support member to the horizontal flat position.
Owner:L & P PROPERTY MANAGEMENT CO
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