160 results about "Cloak" patented technology

A structural improvement of submersible cooling pumps, especially a submersible cooling pump that is capable of enhancing the stability and extending service life, comprising a motor set, an impeller set and a stud set, characterized in that in said motor set, there are provided on the motor casing a top plate, disposed on which is a fan with orifices, and a motor cover having sight holes and cross-shaped ventilating holes that spreads all over the cover, disposed on top of said fan, and a protection cover with a small elastic plate provided to cloak said motor cover which is screw fastened to said motor casing; the lower end of said motor casing fits on the upper rim of the trough of a fixing base, and is fastened onto the fixing hole base of said fixing base; on said fixing base an outlet port and shaft hole are provided, and by both sides of said shaft hole an ingress of water and a positioning hole that permits the screw fastening of another element are provided; said impeller set combines and fastening an upper cover and a lower cover to accommodate a set of vanes, wherein an outlet hole is provided by one side, and a fixing hole by the other side, of an inlet hole of said upper cover; and said stud set consists of a duct pipe and a support pipe, both of equal length, of which the support pipe has female thread at each end allowing it to be screw fastened to the positioning hole of said motor set and the fixing hole of said impeller set, respectively.

A paraxial cloaking device provides a cloaking volume in which an item can be hid from view. A cloaking device includes an optical input receiving light rays and an optical output from which a continuous range of directions of the received light rays exit the paraxial cloaking device. The cloaking volume being disposed between the optical input and the optical output. For received light rays having incoming directions non-parallel to the reference optical axis up to a first angle, each of the received light rays exits the cloaking device substantially aligned with the respective received light ray and does not pass through the cloaking volume. The paraxial cloaking device has a unity magnification factor. In some instances, the paraxial cloaking device includes a phase matching element.

A blanket including an array of seams configured to be selectably removable to adjust the length of the blanket. The blanket includes a first side end and a second side end having a plurality of coded coupling devices. The coded coupling devices are positioned and coded in a manner such that when the coded coupling devices are coupled according to a first code, the blanket forms a cylindrical wrap. The coded coupling devices may be coupled according to a second code, wherein the blanket forms a sleeved cape. The first code is indicated by a first color and the second code is indicated by a second color. The blanket includes a waterproof layer configured to be water resistant and an insulation layer configured to retain heat. The blanket includes a hood having a plurality of coupling devices configured to selectably couple to the blanket.

A communication system that reduces the mutual influence of antennas operating in similar or different frequency bands. The communication system includes a first and a second antenna operating in a first and a second frequency band, respectively, and placed in close proximity to each other. The first antenna is covered by a conformal mantle metasurface with anti-phase scattering properties thereby cancelling the scattering in the second frequency band. The conformal mantle metasurface consists of a patterned metallic sheet comprising slits both in an azimuthal and a vertical direction to reduce both vertical and horizontal polarization scattering. When the first antenna is a low-band dipole antenna and when the second antenna is a high-band dipole antenna, the conformal mantle metasurface reduces the low-band blockage without disrupting the performance of both antennas in terms of radiation pattern and impedance matching.

A security device for a transponder with a kill and / or cloak function is provided. The security device includes a memory device, in which a first, open password is stored, an input, into which a second, secret password is coupled, a cryptologic device, which is connected to the input and generates a checksum from the second password, and a comparison unit, which compares the checksum and the first password and which upon an agreement generates a kill and / or cloak control instruction to activate and / or deactivate a kill and / or cloak mechanism, which can be tapped at an output. A method for configuring a security device and a method for operating a transponder, and a transponder having the security device are also provided.

A paraxial cloaking device provides a cloaking volume in which an item can be hid from view. A cloaking device includes an optical input receiving light rays and an optical output from which a continuous range of directions of the received light rays exit the paraxial cloaking device. The cloaking volume being disposed between the optical input and the optical output. For received light rays having incoming directions non-parallel to the reference optical axis up to a first angle, each of the received light rays exits the cloaking device substantially aligned with the respective received light ray and does not pass through the cloaking volume. The paraxial cloaking device has a unity magnification factor. In some instances, the paraxial cloaking device includes a phase matching element.

Disposable garments adapted to be donned while bathing or showering and drying off. The garments take the form of ponchos. The bathing or showering poncho will have a different color than the drying poncho. Also the bathing / showering poncho will have soap and shampoo impregnated therein. Both ponchos will have ties on the sides thereof to secure the poncho and prevent inadvertent exposure.

The invention discloses a three-dimensional fully-polarized super-surface invisible cloak. The three-dimensional fully-polarized super-surface invisible cloak is formed by seamlessly splicing phase-shift resonant units, wherein each phase-shift resonant unit is composed of an upper-layer medium, a middle-layer medium and a lower-layer medium, the dimensions of each contour line of each phase-shift resonant unit are less than a wavelength of a working electromagnetic wave, the upper-layer medium is a resonant structure with a full-polarization function, the upper-layer medium is fixed on the upper surface of the middle-layer medium, the middle-layer medium is a non-metal layer, the lower-layer medium is a metal layer, and the upper surface of the lower-layer medium and the lower surface of the middle-layer medium are tightly bonded and completely fitted; and a changed reflected wave phase of each phase-shift resonant unit meets the condition defined in the description, wherein delta is the changed reflected wave phase, theta is the complementary angle of an included angle between the working electromagnetic wave of the invisible cloak and a horizontal plane, h is a height of the geometric centre of each phase-shift resonant unit from the ground, and kb is a wave number of the working electromagnetic wave of the invisible cloak. The super-surface invisible cloak disclosed by the invention is insensitive to a polarization direction of the working electromagnetic wave, and suitable for all electromagnetic wave frequency bands.

Provided is a universal cover for an infant carrier, wherein the cover is configured to provide warmth and / or protection from precipitation, such as rain, snow, etc. The cover includes a cape portion which may be draped over the infant seat of the infant carrier. The inside of the cape portion includes a strip of fabric at the peripheral edge thereof to form a peripheral pocket on the cape. The lower end of the pocket may be configured to receive the infant's feet / legs while the infant is seated within the carrier. The cover additionally includes a connector strip including a pair of lateral end portion which may be wrapped around respective shoulder strap(s) of the infant carrier to secure the cover to the infant carrier.

Examples of the present invention include antennas and scattering elements having a metamaterial cloak configured so as to reduce effects on the operating parameters of a nearby antenna. For example, an antenna has an antenna frequency, and a cloak is disposed around the antenna having a frequency range in which the cloak is operative. The antenna frequency can lie outside the frequency range of the cloak, whereas the frequency of a second antenna lies within the frequency range of the cloak. In this case, the antenna is cloaked relative to the second antenna.

The invention relates to the technical field of electromagnetics, and specifically discloses an external electromagnetic cloaking device designed by using a boundary splicing technology. The electromagnetic cloaking device comprises a fan-shaped post which is cut from a cylindrical complementary media invisible cloak and consists of a 1b core region and a 2b complementary media region; the cross section of the fan-shaped post is a sector with an included angle of 2theta; the bent cambered surface of the fan-shaped post is a portion of the side face of the cylindrical complementary media invisible cloak. The electromagnetic cloaking device consists of a 1a core region, a 1b core region, a 1c core region, a 2a complementary media region, a 2b complementary media region and a 2c complementary media region. An external invisible cloak of any shape can be cut by adopting the boundary splicing technology, and the disclosed combined electromagnetic cloaking device is constructed by splicing other regions on the boundary of a section. By adopting the electromagnetic cloaking device, the size of the cloaking device can be reduced greatly, and the cost and space are saved. A method for designing the combined electromagnetic cloaking device can be applied to the design of any other external electromagnetic cloaking device.

A FinFET comprises an isolation region formed in a substrate, a cloak-shaped active region formed over the substrate, wherein the cloak-shaped active region has an upper portion protruding above a top surface of the isolation region. In addition, the FinFET comprises a gate electrode wrapping the channel of the cloak-shaped active region. The invention further discloses an apparatus and method for FINFET.

Disclosed herein is a cloak-type raincoat which can be rapidly put on so as to prevent garments and personal belongings from becoming wet owing to rain or snow falling suddenly. The raincoat is about 0.05 mm and is very thin, thus allowing a user to walk or perform actions without suffering inconvenience. The raincoat is made of a transparent material, thus easily ensuring visibility, therefore allowing the user to safely walk at night. The volume of the raincoat is small, so that it is convenient to carry or store the raincoat.

The invention relates to a two-dimensional convective heat stealth cloak design method based on active control heat source, comprising the following steps of: establishing a three-dimensional coordinate system x-y-z and determining that the region surrounded by the coordinate system is a design region. The velocity distribution and background temperature of the flow field are calculated. The direct problem, the adjoint problem, the derivative of the objective function, the conjugate coefficient, the iterative direction coefficient, the sensitivity problem, the iterative step length and the objective function of the heat source in Z2 and Z3 regions are solved respectively, and the heat source distribution is updated. The composite objective functions of Z2 and Z3 regions are calculated. According to the flow field velocity and the background temperature, the invention establishes a stealth cloak by applying a heat source at the bottom of the flow channel, and heats or cools the fluid flowing in a specific area, so as to realize the temperature distribution in the flow field that satisfies the function of the stealth cloak.

The invention discloses a polydimethylsiloxane / graphene flexible composite film with a negative dielectric constant and a preparation method thereof. The preparation method comprises: uniformly mixinga polydimethylsiloxane precursor, a curing agent and a non-polar organic solvent, adding 3-4% of graphene into the solution, wherein the mass of the non-polar organic solvent is the same to that of the precursor, uniformly dispersing graphene in the solution to obtain mixed slurry, pouring the mixed slurry on a flat plate, uniformly coating the flat plate with the mixed slurry, and carrying out curing and peeling the coating to obtain the polydimethylsiloxane / graphene flexible composite film. The composite film has thickness of 0.1 to 2 mm. The flexible composite film has a negative dielectric constant, has the characteristics of simple process, low cost and easy mass production, and has an important application value in the fields of wearable devices, sensors, stealth cloaks and flexibleelectronic devices.

A device designed to protect a user's clothing from spills and mishaps is placed underneath a vinyl protector commonly used in beauty salons during shampooing and other hair and beauty treatments. When used in this manner, it provides additional protection for a user's clothing and ensures that water and other liquids that get underneath the vinyl protector will not contact the wearer's clothing. It is comprised of a soft absorbent material such as terry cloth and fastens about a neck of the user with the aid of a fastener system. It is perfect for eating messy foods in the home, in restaurants, or in locations where eating is awkward, such as in the car. It is also ideal for the elderly, the physically disabled, or others with diminished coordination that may frequently soil their clothes while eating.

A structural improvement of submersible cooling pumps, especially a submersible cooling pump that is capable of enhancing the stability and extending service life, comprising a motor set, an impeller set and a stud set, characterized in that in said motor set, there are provided on the motor casing a top plate, disposed on which is a fan with orifices, and a motor cover having sight holes and cross-shaped ventilating holes that spreads all over the cover, disposed on top of said fan, and a protection cover with a small elastic plate provided to cloak said motor cover which is screw fastened to said motor casing; the lower end of said motor casing fits on the upper rim of the trough of a fixing base, and is fastened onto the fixing hole base of said fixing base; on said fixing base an outlet port and shaft hole are provided, and by both sides of said shaft hole an ingress of water and a positioning hole that permits the screw fastening of another element are provided; said impeller set combines and fastening an upper cover and a lower cover to accommodate a set of vanes, wherein an outlet hole is provided by one side, and a fixing hole by the other side, of an inlet hole of said upper cover; and said stud set consists of a duct pipe and a support pipe, both of equal length, of which the support pipe has female thread at each end allowing it to be screw fastened to the positioning hole of said motor set and the fixing hole of said impeller set, respectively.

The invention is a single piece of ultralight backpacking gear that can be configured to a cloak, a one person bivy tent and can be joined to a cloak of the same design to form a two person tent.

The invention discloses an information hiding wireless transmission method based on time reversal, and belongs to the field of electronic technology. The method comprises the following steps that: a cloak pulse H(t) is added in front of an encoded target signal T(t) to form a new pulse sequence X(t); the cloak pulse undergoes a multipath delay effect after passing through a first reverberation cavity, a waveform is extended, and the target signal is hidden to form a new signal Y(t); the Y(t) is transmitted, and time reversal waveform transform is performed on the signal Y(t) after the signal Y(t) is received by a receiving end to obtain Y(-t); and the Y(-t) is input into a second reverberation cavity being the same as the first reverberation cavity, and the cloak signal and the target signal are recovered. Through the scheme, information hiding transmission is realized. The information hiding wireless transmission method is applied to the field of secret communication.

The invention relates to an intelligent far infrared graphene heated garment. The intelligent far infrared graphene heated garment comprises a garment body and further comprises a far infrared graphene heating assembly and a control box. The far infrared graphene heating assembly is arranged on the inner layer of the garment body, and the control box is connected with the far infrared graphene heating assembly to control the heating temperature of the far infrared graphene heating assembly. The far infrared graphene heating assembly comprises a far infrared graphene heating piece and a power line. After the far infrared graphene heating piece and the power line are packaged by cloth, the power line penetrates out of the cloth to be connected with the control box. Compared with the prior art, the intelligent far infrared graphene heated garment solves the problem that the warm-keeping effect of exiting clothes such as mantles, wraps and cloaks is poor and has the advantages of being good in heating effect and warm-keeping effect, convenient and reliable to use and the like.

The invention relates to the field of acoustic technology, particularly relates to a two-dimensional carpet-type invisible cloak based on an arc adjustable acoustic metasurface, and is formed by arranging and splicing metasurface unit cells along the normal direction of the arc curve. The length of the circular acoustic channel in the unit cell is changed by changing the rotation angle of the rotor movable body in the upper and lower end covers of the arc stator, so that the phase position of the reflected sound wave is continuously adjusted between 0-2 pi. The carpet-type invisible cloak provided by the invention realizes carpet-type invisibility under different frequencies and different incident angles by arranging the rotation angle of the rotor movable body in the arc metasurface, so as to achieve the purpose of the real-time adjustment. And simultaneously, the arc-shaped curve structure provides important theoretical basis for manufacturing the arc invisible cloak capable of beingclose to the surface of any object.

A waterproof garment in the form of a cloak is disclosed. The cloak includes an outer layer and an inner layer, each made of a suitable fabric. The outer surface of the outer layer is endowed with decorative properties such as color and texture for the intended use. The inner surface of the inner layer is preferably chosen for suitability in coming in contact with a wearer. Enclosed between the outer and inner layers, protected from abrasion and other potential hazards inherent in direct physical contact, at least one surface is a weather layer, preferably impervious to water.

The output to the antenna of an RFID tag or label is disconnected from the balance of the RFID chip by means of a series switch activated in response to a logic command, CLOAK, generated by the RFID chip. Activation of the switch disconnects the output to the antenna of the RFID tag without disconnecting its input. The output to the antenna is thus disconnected for a time sufficient to allow the remaining RFID tags in an RF interrogation field to be identified. However, the input of the antenna remains connected and is capable of receiving at any time, including during the cloaking period commands which can lift the tag out of cloaking and allow it to then selectively output its signal.

The invention provides a multilayer nano-fluid based adjustable three-dimensional heat invisible cloak. The adjustable three-dimensional heat invisible cloak can be implemented by using a surface covering housing layer consisting of nano fluids; the surface covering housing layer is formed by superimposing a plurality of nano fluid circular layers from bottom to top; the thermomagnetic conversion and the thermophysical characteristic of nano fluids in different circular layers, the characteristic of nano magnetic particles included in the nano fluids, the fluid structure, and chemical constitution of nano particles can be controlled so as to various layers to correspond to different heat conductivity coefficients, three-dimensional heat conductivity distribution desired by heat invisibility can be acquired, and then after heat flows bypass a cloak zone, a temperature field and an isotherm resume original distribution, and the heat invisible function can be achieved; heat conductivity of the nano fluid in each circular layer can be controlled circularly, real-time on / off performance of the heat invisible cloak can be achieved, and the defect that the three-dimensional heat invisible cloak cannot allow circular on-off can be overcome.

The invention provides an adjustable two-dimensional thermal invisible cloak based on multilayer vanadium dioxide. Annular layers of vanadium dioxide extend layer by layer in the x-y axis direction by taking the x-y horizontal plane as the axis to form the adjustable two-dimensional thermal invisible cloak; through control of crystal structure of the vanadium dioxide in different annular layers, the layers can correspond to different thermal conductivity coefficients, two-dimensional thermal conductivity distribution needed by thermal invisibility is acquired, original temperature field and isotherm distribution is recovered after heat flow passes by a cloak area, thermal invisibility is realized, interference of the external heat flow is shielded for an object at the center of the thermal invisible cloak, and external thermal flow distribution is not affected. Through circular control of crystal structure change of the vanadium dioxide in the annular layers, real-time on-off performance of the thermal invisible cloak is realized, and accordingly, the defect of incapability of circularly switching on and off the two-dimensional thermal invisible cloak is overcome.