236results about How to "Difficult to assemble" patented technology

A set of essentially identical panels (1, 1′), such as building panels, provided with a mechanical locking system including a displaceable tongue (30), which is arranged in a displacement groove at a first edge of a first panel (1). A second panel is provided with a tongue groove at a second edge. The displaceable tongue is configured to cooperate with the tongue groove (20) for locking together the first and the second edge. The displaceable tongue has a spring constant that varies along the length of the tongue.

A thermionic emission device includes an insulating substrate, and one or more grids located thereon. Each grid includes a first, second, third and fourth electrode down-leads located on the periphery thereof, and a thermionic electron emission unit therein. The first and second electrode down-leads are parallel to each other. The third and fourth electrode down-leads are parallel to each other. The first and second electrode down-leads are insulated from the third and fourth electrode down-leads. The thermionic electron emission unit includes a first electrode, a second electrode, and a thermionic electron emitter. The first electrode and the second electrode are separately located and electrically connected to the first electrode down-lead and the third electrode down-lead respectively. The insulating substrate comprises one or more recesses that further insulate the thermionic electron emitters from the substrate.

A set of essentially identical panels, such as building panels, provided with a mechanical locking system including a displaceable tongue, which is arranged in a displacement groove at a first edge of a first panel. A second panel is provided with a tongue groove at a second edge. The displaceable tongue is configured to cooperate with the tongue groove for locking together the first and the second edge. The displaceable tongue has a spring constant that varies along the length of the tongue.

The invention relates to injection amphiphilic-microsphere-containing hyaluronic acid mixed gel and a preparation method thereof. The microsphere material relates to amphiphilic materials of PLLA-PEG, PLGA, PLGA-PEG and the like. The molecular weight of PLLA or PLGA is 10,000-500,000, the molecular weight of PEG is 1,000-10,000, and in PLGA, LA/GA=90/10-10/90. The average grain diameter of the microsphere is 1-200 [mu[m, and the mass percent of the microsphere in the gel is 1-50%; the gel is made from hyaluronic acid, divinyl sulphone crosslinked hyaluronic acid, or glycidyl ether crosslinked hyaluronic acid, the molecular weight of the hyaluronic acid is 100,000-3,000,000, and the mass percent of the hyaluronic acid is 1-50%. The gel can be also made from animal-derived collagen, chitosan, amino acid cellulose and sodium alginate. The microsphere mixed gel is prepared in a sodium chloride solution or a phosphate buffered solution with the osmotic pressure of 250-350 mOsm/L and pH of 6.5-7.5. According to the invention, the amphiphilic microsphere is directly mixed with hyaluronic acid gel, can be uniformly distributed in the gel easily, and is unlikely to aggregate into blocks in the water environment of a human body after being injected.

A method, system and computer program product for obfuscating pseudocode (e.g., p-code, IL-code, byte-code, etc.), including creating a class-container; declaring an anonymizer method in the class-container; identifying method call instructions in the pseudocode; replacing, in the pseudocode, method calls with calls of the anonymizer method; and in the anonymizer method, adding the method call instructions. All or some of the added method calls have the same name. Parameter types of the added calls can be replaced with an abstract type. Return types of the added calls can be replaced with an abstract type. The class-container is a global class, and includes calls to public method, or the class-container is a private nested class, and includes calls to private methods, or two separate class-containers can be used. Optionally, the invention can include identifying field load instructions in the pseudocode; replacing, in the pseudocode, field load instructions with calls of the anonymizer method; and in the anonymizer method, adding the field load instructions.

An antenna mount is provided with a pivot base and a pivot saddle rotatably coupled to the pivot base by a pivot connection and at least one pivot arm connection. The pivot connection is provided with dual opposing conical countersunk head pivot connection bolts seated within conical countersunk pivot connection bolt holes of the pivot saddle, the conical countersunk head pivot connection bolts extending through the conical countersunk pivot connection bolt holes of the pivot saddle to couple with the pivot base about a pivot axis.

A non-bracket windshield wiper includes an H-shaped and smoothly arched elastic metal bow strip having a middle neck and two longitudinal crevices at two sides of the neck, a holder frame mounted with a packing member and riveted to the middle part of the elastic metal bow strip for mounting to a windshield, two holding strips respectively coupled to the longitudinal crevices of the elastic metal bow strip, two back rubber strips respectively coupled to two top engagement structures of the holding strips, a rubber wiper blade coupled to two bottom engagement structures of the holding strips, and two end caps respectively capped on the two ends of the elastic metal bow strip.

A rack assist type electric power steering system has a durable and simplified structure with reduced parts and has an improved productivity, so as to reduce the manufacturing cost thereof and remarkably reduce an assembling difficulty thereof.

An apparatus for framing and hanging a sheet-like display item on a surface includes first and second generally identical elongate members, each member having a longitudinally extending, generally U-shaped channel for receiving an edge of the sheet-like display item therein, and a retaining means enabling secure and non-marring retention of the item within the generally U-shaped channel.

Panelized wall and roof structures for constructing energy efficient buildings. The panelized structures have a structural layer with insulation, an airtight layer providing a primary air barrier and a vapor retarder exterior to the structural layer, a vapor open blanket layer including insulation and attached to the structural layer via structural screws, a weather resistant barrier provided exterior to the blanket layer and including an airtight, water-repelling, vapor-open fabric, and a rain screen provided exterior to the weather resistant barrier and including a drainage plane for channeling moisture away from the weather resistant barrier.

The invention discloses a wireless laser communication reflection type aiming tracking system and a laser aiming tracking method. A controller is controlled to control pitch and horizontal motion of atwo-dimensional rotating reflection mirror; a laser transmitted by the wireless laser communication transmitting end is reflected into an optical receiving antenna; the optical receiving antenna focus the later into a small facula, and the small facula hits a four-quadrant detectorin the optical receiving antenna; the four-quadrant detector output corresponding voltage to a control processor, andthe control processor controls pitch and horizontal motion of the reflection mirror based on the received voltage until the facula hits in a small hole at the center of the four-quadrant detector; acoupling fiber is fixed to the center through hole of the four-quadrant detector, and when the facula enters the center through hole, a laser signal transmitted by the transmitting end can be coupledinto the fiber; and the fiber is used for transmitting the laser signal to sequential signal processing portion, and establishment of wireless laser communication link is achieved. The aim of the APTsystem establishes the wireless laser communication link in a short time is achieved.

A multi-directional bulb-type lamp is disclosed. The multi-directional bulb-type lamp includes a carrying body, a flexible substrate, and a plurality of LED dies. The flexible substrate is a substrate extending toward multi-directions and attached to the carrying body along a surface thereof. The LED dies are directly disposed on the flexible substrate and electrically connected thereto. Whereby, structures of the bulb-type lamp will be simplified for easy assembly, and multi-directional lighting will be reached.

Disclosed is a tent frame top connecting structure comprising top levers movably connected to a connecting piece, connecting grooves, positioning grooves, sidewalls, lateral walls, a top portion, a bump stopper, and a moving fulcrum. Top levers serve as installation tools. The structure is simple and convenient to assemble.

An improved heat sink element coupling structure comprised of a minimum of one or more folded appendages that are formed by bending along the upper or lower lateral edges, the middle, or other suitable position of a single heat sink element or along the two sides of one lateral edge or middle position of a single heat sink element; an opening disposed at the confluence of the folded appendage and the single heat sink element plate that penetrates the folded appendage to form a perforated construct; and a linking member that extends outward from the folded appendage and, furthermore, is positioned at the distal extremity of the single heat sink element plate. The features of the present invention include the following innovations. The linking member also has two lock tabs along its two sides that extend from the two sides at the leading extremity of the linking member. During interconnection, the lock tabs along the two sides of the linking member on single heat sink elements are articulated into an O shape and engaged into the opening of another immediately adjacent single heat sink element. Furthermore, the linking member and the two lock tabs at its two sides are formed into a horizontal S shape or an inverted horizontal S-shaped arrangement such that they are crimped onto the other single heat sink element plate and also firmly secured against the two lateral edges of the opening to prevent unintentional dislodging.

The invention relates to a microfluid conveying and atomizing device used for conveying fluid, atomizing the fluid into a plurality of liquid drops and jetting the liquid drops. The device comprises amicrofluid conveyor and an atomizer, wherein the microfluid conveyor is provided with an entryway; the atomizer is provided with a nozzle piece, a storage groove and an actuating element, and the nozzle piece is arranged corresponding to the storage groove and is connected with the actuating element; and the microfluid conveyor is achieved as follows: fluid is conveyed the storage groove of the atomizer through the entryway to enable the nozzle piece to atomize the fluid into a plurality of the liquid drops to be jetted corresponding to the drive of the actuating element .

A moveable linkage for a parallel mechanism includes a swing arm, a four-link structure rotatably connected to the swing arm, and a plurality of pivotal shafts. The four-link structure includes a first connection shaft, a second connection shaft, a first link bracket and a second link bracket. Each of the first and second link brackets includes a first end portion and a second end portion. The first end portions of the first and second link brackets overlap and rotatably connect two ends of the first connection shaft by the pivotal shafts. The second end portions of the first and second link brackets overlap and rotatably connect two ends of the second connection shaft by the pivotal shafts.

By adhering substrates in a fuel cell into a substrate set and stacking the substrate sets into a fuel cell stack, a large space for chemical reaction in the stack is formed, and a space required for the stack is greatly saved.

The invention provides an electric kettle which comprises an inner container, a noise reduction layer, a heat conduction plate and a heating device; the inner container comprises a bottom plate and side enclosing plates; the bottom plate is connected with the side enclosing plates to form an accommodating cavity for accommodating liquid; the noise reduction layer is arranged on the bottom plate and is positioned in the accommodating cavity, and the upper surface of the noise reduction layer is uneven microscopically; the heat conduction plate is arranged under the bottom plate; the heating device is arranged on the heat conduction plate; when the electric kettle heats the liquid, the upper surface of the noise reduction layer is uneven to accelerate the generation and the aggregation of air bubbles. The electric kettle provided by the invention has the benefits that through the noise reduction layer, different areas on the bottom plate are uniformly heated, so that the rate when the air bubbles are separated from the noise reduction layer is reduced; meanwhile, the generation and the aggregation of the air bubbles are accelerated, so that the plurality of small air bubbles are aggregated into big air bubbles, the problem of large noise caused by implosion, namely disappearance after a large amount of single small air bubbles is changed into the big air bubbles in the rising process is solved, ,the noise generated when the electric kettle heats the liquid is reduced, and the use conform of the product is improved.

A driving belt comprising plate elements juxtaposed in its thickness direction and a flat ring fastening the elements annularly. The elements includes at least one adjuster element configured to adjust an endplay as a total of clearances between the adjacent elements in the elements fastened annularly by the ring. The adjuster element comprises an insertion groove opening toward the endplay, and an inserting member inserted into the insertion groove and configured to protrude partially from the insertion groove thereby adjusting the endplay.

The invention provides a small size uncooled dual-field-of-view infrared optical system which comprises a first positive meniscus lens and a detector. A biconcave lens, a second positive meniscus lens, a negative meniscus lens and a third positive meniscus lens are sequentially arranged from the first positive meniscus lens to the detector along the optical axis; the first positive meniscus lens, the second positive meniscus lens and the third positive meniscus lens each have positive diopter, and the biconcave lens and the negative meniscus lens each have negative diopter. Both the curved surface S3 of the biconcave lens and the curved surface S7 of the negative meniscus lens are aspheric surfaces, and the aspheric surface S7 is further provided with a binary diffraction surface. The lenses of different types are reasonably arranged and the positive diopter and the negative diopter of the lenses are selected, so that the whole dual-field-of-view infrared optical system has a smaller size and a larger zooming ratio, has a larger zooming range under the switching conditions of a narrow field of view and a wide field of view, and is suitable for occasions with small size requirements for infrared optical systems.

An electrical connector suitable to mate with another mating connector comprises an combined body, a grounding metal plate and an outer shielding shell. The combined body comprises a first terminal module and a second terminal module. The first terminal module has a first insulative piece and a plurality of first terminals. The first insulative piece has a first base portion and a first tongue portion. Each first terminal forms a first mating portion and a first soldering portion. The second terminal module has a second insulative piece assembled with the first insulative piece and a plurality of second terminals. The second insulative piece has a second base portion and a second tongue portion. Each second terminal forms a second mating portion and a second soldering portion. The grounding metal plate is interposed between the first terminal module and the second terminal module. The outer shielding shell surrounds an outer space of the first tongue portion and an outer space of the second tongue portion, and forms a mating cavity for insertion of the mating connector.

An electrical connector includes an insulating body having a bottom plate with receiving slots and multiple terminals received in the receiving slots. Each receiving slot has two opposite first side walls, and a second and third side walls connecting the first side walls. A protruding block protrudes from the second side wall toward the third side wall. Each terminal has a plate portion, an elastic arm and a material connecting portion extending upward from the plate portion, a contact portion at a top end of the elastic arm to urge a chip module, and two clamping portions bending and extending from two opposite sides of the plate portion horizontally. The plate portion and the material connecting portion are limited between the protruding block and the third side wall. Tin balls are fixed between the clamping portions, and soldered to a circuit board. The tin balls are below the protruding block.

A connector includes a housing and an electric wire cover assembled with the housing. The housing includes a terminal housing portion and an electric wire leading portion. A locking rib protruding outward is formed on the electric wire leading portion. An assembling portion is formed on an end part of the electric wire cover facing to the housing. The assembling portion includes a locking protrusion and a catching portion protruding more than the locking protrusion in a mounting direction of mounting the electric wire cover on the housing. The catching portion includes a sliding face inclined with respect to the mounting direction. When the electric wire cover is mounted on the housing, the sliding face makes contact with the electric wire leading portion, thereby the assembling portion is displaced outward.