Abstract: This invention teaches a system and a method for cleaning a car by means of a vacuum. Tubes extend from a vacuum motor to inlets distributed around a car. When the vacuum motor is turned on, dirt (dust, smoke) are sucked by the vacuum motor into a vacuum bag unwanted gases are either vented out of the car or filtered out. Clean filtered air may be returned to the car or vented out of the car.

Abstract: A vacuum cleaner (2) having a body (4) having a floorhead (6) and an elongate handle (14) pivotably mounted to the body is disclosed. A door (24) is provided on an end (20) of a collection chamber (12) opposite to a clean air outlet, and a coarse filter (32) and fine filter (46) are located within the collection chamber for separating out debris entrained with dirty air and depositing the debris in the collection chamber. An interior face of the door is provided with radial tangs (68), and an end face (48) of the fine filter is provided with radial tangs (60) such that when the door is closed and the elongate handle is pivoted relative to the body, the fine filter and coarse filter rotate relative to each other to cause cleaning of the filter elements.

Abstract: An exhaust valve assembly is supported by at least one square bushing. The exhaust valve assembly includes a valve body that is pivoted by a shaft. The square bushing supports the shaft for rotation relative to a bushing housing. The bushing housing comprises a square tube with a square bore. The square bushing includes a square-shaped body with a circular bore that receives the shaft.

Abstract: A window roller apparatus comprising a cradle, a housing pivotably installed in the cradle, and at least one roller wheel rotatably installed in the housing. Cradle side walls are formed with opposite inwardly-opening cradle side wall recesses, and respective housing side walls are formed with opposite inwardly-opening housing side wall recesses and with opposite outwardly-projecting bosses configured to pivotably engage the respective inwardly-opening cradle side wall recesses. The at least one roller wheel has an axle that engages the housing side wall recesses. A resilient pad is positioned on the cradle bottom wall between the cradle and the housing, the pad being of a sufficient size and thickness to at least partially engage the housing and effectively bias the housing toward a parallel orientation relative to the cradle while allowing for non-parallel operation of the housing relative to the cradle as dictated by operational constraints on the window roller apparatus.

Abstract: A hanging type earphone with a hinge unit includes an earphone body, a hang member and a hinge unit. The earphone body has a connecting base defining a receiving space. The hinge unit received in the receiving space includes a positioning base, an axis cover and a pivotal axis having a mating portion whose cross-section is a polygon. The axis cover presses against the positioning base to form a pivotal space, one end of the pivotal axis is fixed in the hang member and the other end passes through the pivotal space, the mating portion mates with the side walls of the axis cover, thereby, the earphone body is positioned after rotating relatively to the hang member. Moreover, the pivot axis can be pulled out from the pivotal hole and then inserted into the pivotal space from the opposite direction, so the hanging type earphone can be hung on either ear of the user.

Abstract: An adjusting device for furniture parts includes an eccentric disk rotationally mounted on a first furniture part. The eccentric disk has, on its periphery, two eccentric surfaces which are axially offset from each other, extend in opposite directions with the same slope, and which interact with two opposite abutment surfaces that are axially offset from each other. Both abutment surfaces are formed on a housing that accommodates the eccentric disk and are joined to a second furniture part.

Abstract: Disclosed is an electronic handheld device. The device has a first panel, a second panel rotatable relative to the first panel about an axis and a hinge. The hinge has first and second hinge members. The first member is engaged with the first panel. The second member is engaged with the second panel and rotatable relative to the first member about the axis. The first panel has a hole generally extending along the axis. The first hinge member is configured to linearly move within the hole. The first hinge member has an outer wall that has a curved surface and a key. The curved surface is a circular arc having a radius from the axis when viewed along the axis. The key is located outside an imaginary circle, a portion of the circumference line of which overlaps the circular arc.

Abstract: A locking mechanism system for a caster or similar wheeled device. The subject caster or the like is provided with a wheel containing a plurality of detents or grooves that is mounted to a fork having an aperture. The locking mechanism is mounted to the fork such that a retractable locking pin may move in and out of the aperture. A slidable lever, containing an internal cam moves the spring biased locking pin between an unlocked and locked position such that the locking pin engages the wheel detents in the locked position, thus preventing the wheel from rotating.

Abstract: This invention is a castor, including the castor main body, brake system, directional system, release mechanism and a number of positioning elements. One side of the castor main body has a brake system and a directional system, allowing the user to easily carry out braking or release the brakes simply by pressing the brake system or directional system, making the brake flexible platelet move and press against the wheel surface. Also because the fluted disc on the brake system and the brake flexible platelet is combined into one, the fluted disc will, at the same time, move up and engage with the direction change fluted disc, applying the brakes and maintaining direction. By pressing down the directional system the castor can also be set to move in a straight line only.

Abstract: The invention relates to a support device for hanging objects on garments consisting of two magnetized parts (1) and (2), which can be fixed to one another by mutual magnetic influence, arranging them on the inside and outside of a garment (4), respectively, in order to secure the application element to be supported with respect to the part (1) arranged on the outside.

Abstract: An apparatus for writing or drawing on paper or pads of paper held by a clipboard, the clipboard allowing the paper or pad to be moved upward by the user to maintain support for his or her writing hand as the user writes down the page. The pad-holding clamp is placed along the longer left edge of the clipboard so that it cannot interfere with the pad as the user raises it to and beyond the top edge of the clipboard, Previous designs placed the clamp on the top narrow edge of the panel, where it constitutes an obstruction that prevents the user from moving the pad up. Spring clips that snap into place provide the clamping force required to keep the pad from slipping, and rubber grip strip on leading edge, underside of the clamp and extending the length of the clamp holds even a single sheet firmly.

Abstract: The device comprises: a clamping collar having a belt that has two substantially cylindrical faces and that is suitable for being tightened around an article to be clamped; and at least one positioning piece comprising: a securing plate that is disposed facing a first face of the belt while being retained relative to said belt; and a positioning portion that is suitable for positioning the device relative to the article to be clamped. When the collar is in its initial, non-tightened state, the securing plate is braced against the first face of the belt, while the retaining whereby the plate is retained relative to the belt allows the belt and the plate to move relative to each other. The plate is suitable for being deformed while the collar is being tightened onto the article so as to present curvature that matches the curvature of the belt.

Abstract: In a clip attaching seat 1 integrally provided to a vehicular interior molded product and attached with a clip having a locking head portion of a bulged shape above a neck portion, on a face of a seating portion 11 in a plate-like shape formed with a clip locking hole 12, ribs (14 through 16) having widths the same as a plate thickness thereof are formed. Thereby, a rigidity of the thin-walled seating portion 11 is ensured while making a wall thickness of a total of the clip attaching seat 1 constant.

Abstract: The present invention regards a fluid tight slide fastener (10) of the type comprising a slider (15) slidably associated with opposite edges (12a) of two flanking strips (12) to provide for their closure, and an upper end stop (16) with which said slider (15) is removably engaged upon closure, characterised in that in said upper stop (16) and in said slider (15) respective means (19,21) and counter-means (46,47) are provided for and adapted to make, upon upper stop (16)—slider (15) engagement, a clearance-recovery taper fit, so-called clearance-recovery wedge. The present invention also regards an upper stop and a slider for a slide fastener of the aforesaid type.

Abstract: The present invention provides a slider wherein a Y-shaped guide groove which allows a fastener chain to pass therethrough is provided in a body of a slider, the intermediate partition which is raised inward on both sides of a guide post and extends from an inside end of the guide post toward a rear mouth is provided on an inner surface of one of upper and lower blades, and a top surface of the intermediate partition is formed into an entirely inclined slope such that a shoulder mouth side is higher than a rear mouth side, thereby enabling to catch and introduce coupling heads of fastener elements exposed from the side edges of the fastener tapes, so that the coupling heads of the right and left fastener elements are engaged with each other between the guide post and the rear mouth.

Abstract: The quick-release device for attaching a vertical load bearing wire (32) to a supporting wire (30), which extends in a plane that is essentially perpendicular to the load bearing wire (32), is used for growing climbing plants along said load bearing wire (32). The device comprises a bracket (1) having clip-on fastening means for being suspended from the supporting wire (30), and holding means for assuring the suspension of the load bearing wire (32). The holding means have a female element provided in the carrier (1) and is capable of interacting with a male element fixed to the load bearing wire (32).

Abstract: A clip is provided that is especially well adapted for holding IV lines. The clip includes a first member and a second member. The first member defines a groove, and the second member defines a second groove substantially corresponding to the first groove of the first member. An axial member is also included. The first member and the second member are configured to rotate about the axial member.

Abstract: A tool for mounting a chisel on a chisel holder, having an actuating member, which has a push-off section, wherein the actuating member can be displaced along a displacement direction. It is possible to simplify changing the chisel if the actuating member can be shifted by an actuating unit. The actuating unit has a draw-in section, which is spaced apart from the push-off section and is arranged transversely with respect to the displacement direction of the actuating member. The actuating member can be power-operated bidirectionally in the displacement direction by the actuating unit.

Abstract: The present invention generally relates to an adjustable or variable joining device or connector that may connect a duct (such as pipe or tubing) having a range of shapes, sizes and thread styles to an object (such as equipment, a container, or another length of pipe or tubing). The device generally comprises a sealing member that elastically expands to fit adjacent to the exterior surface of the duct. The sealing member may also be positioned within and connected to a casing member. To prevent the sealing member from collapsing under thrust loads tending to pull the duct from the device, the sealing member is held in place relative to the duct and the casing member by a rigid or semi-rigid support assembly, a cover plate, compressible inserts, foam or a combination of the same. The invention also includes certain kits and methods of using and constructing the device.

Abstract: A method of repairing the surface of a formwork panel made of plastic. The invention provides for a surface coating of the formwork panel to be removed by machining, for example by a milling cutter, and for the formwork panel to be recoated with the same thickness as the removed surface coating. For the repair, the formwork panel can remain in its frame.

Abstract: This present invention discloses a cutting shield machine used for separating iron shells of connectors from a metal strip. The cutting shield machine includes a worktable, a separation apparatus located in the worktable, a carrying apparatus located in the worktable delivering the metal strip into the separation apparatus, a receiving box located in the worktable for receiving the iron shells from the separation apparatus, a crossing apparatus and a driving apparatus located in the worktable. The separation apparatus has a prop stand located in the worktable, a rotating portion with a columned portion capable of rotation and a pole are fixed in the prop stand in sequence in the transmission direction of the metal strip. The metal strip passes from the top of the rotating portion and the bottom of the pole or from the bottom of the rotating portion and the bottom of the pole.

Abstract: Method for fastening an accessory (2) at at least two points of a wall of a plastic fuel tank, this fastening taking place during the actual manufacture of the tank by molding. According to this method, the accessory (2) is provided, at least at one of its fastening points, with a fastening part (1, 1?) in such a way that the accessory (2) is fastened to the wall of the tank and can move relative to the corresponding fastening point on the wall of the tank (3).

Abstract: A device for assembling a lens assembly includes a base, a barrel having a bottom, a universal joint disposed between the base and the bottom of the barrel, a push rod, and a resilient member. The universal joint is configured for allowing the barrel to tilt in any direction. The push rod is configured for depressing the lenses received to the barrel to form a lens barrel. The resilient member is disposed between the base and the bottom of the barrel. In process of assembling lenses, when the push rod presses the lenses received in the barrel, the lens assembly can hold the axis of the lenses in coaxial alignment under the cooperation of the universal joint and exert a uniformity force on a surface of the lenses. The lens assembly can eliminate the risk of breakage of the lenses and accurately position the lenses.

Abstract: A CMC sandwich used to fabricate CMC structures includes facesheets bonded to a core reinforced with a ceramic truss comprising an array of CMC pins. The binder matrix in the ends of the pins is removed, leaving exposed, flexible ceramic fibers. The exposed ceramic fibers are bent so as to extend parallel to the facesheets, and are bonded to one or more plies of the facesheets. The binder matrix in the ends of the ceramic pins may be removed by mechanical or chemical processes.

Abstract: A method of manufacturing an outer retainer for a one-way clutch having an outward flange at one side edge thereof involves punching out a part of an annular portion having the outward flange by sliding a punch toward an axis of the outer retainer substantially in an axially inner direction from a retainer outer periphery-sided curve portion of the outward flange to a retainer inner periphery-sided curve portion thereof in a way that uses a die and the punch.

Abstract: A manufacturing method of a planar antenna is provided. Wherein, a plurality of antenna patterns and conductive patterns are simultaneously formed by the printing or electroless plating process. The conductive patterns which string the antenna patterns are taken as the plating electrodes and a roll-to-roll manufacturing process is cooperated to plate the antenna patterns. Then, a cutting process is used to separate the electroplated antenna patterns and the conductive patterns to respectively form the individual antenna structure. The manufacturing method has the advantages of speedy manufacture, mass production and low cost.

Abstract: A pew securing apparatus and method features a base having a plurality of barbs extended at an angle therefrom, with the base being secured to the underside of a leg of a pew. The weight of the pew causes the barbs to penetrate a carpeted surface. The combination of the weight of the pew and the angle of the barbs causes the pew to resist lateral movement when in position. In one embodiment, two (or more) apparatuses may be utilized, and it may be desired to position one so that the plurality of barbs extend in a first direction, and a second so that its plurality of barbs extend in a second, different direction.

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.

Abstract: A target layer with holes is formed on a bottom conducting layer. Nanotubes are formed in the holes from the bottom conducting layer. A flat insulating layer is then deposited on the target layer, the nanotubes passing through the insulating layer. Air gaps are then formed by selective decomposition of the target layer. The decomposition agent and/or decomposition by-products use the walls and the central holes of the nanotubes to pass between the target layer and the outside. After decomposition, the top conducting layer is formed on the insulating layer. The nanotubes then electrically connect the conducting layers.

Abstract: Carriers (10) holding parts (50) for assembling complex MEMS devices are transported to a central assembly location. The parts are stacked in a pre-assigned order and later released from their carriers. Alternatively, they are positioned over the appropriate location and released so as to fall into position as needed. The assembly area (100) includes a cavity below the plane of the carriers such that the parts held within the carrier drop into the cavity. Heating elements are integrated into the cavity to assist in the release of the parts. The cavity is supplied with parts by one or more carriers which are move around by any number of MEMS drive systems (200, 250). The cavity and some of the MEMS assembled therein deliver with precision amounts of materials as required suitable for biomedical applications, or may be processed in-situ, as in an on-chip laboratory.

Abstract: A method of cutting signal wire preserved on circuit board applicable to a circuit layout is provided to reduce signal return loss induced by the preserved wires. The circuit layout has a plurality of preserved wires and a common contact electrically connected to the preserved wires. The cutting method is performed by cutting off one of the preserved wires and disconnecting a break part of the wire from the common contact.

Abstract: A solder resist comprising a thermosetting resin is printed on a surface of an insulating board (7) having a conductor circuit (6). The solder resist is then heat-cured to form an insulating film (1) having a low thermal expansion coefficient. A laser beam (2) is then applied to the portion of the insulating film in which an opening is to be formed, to burn off the same portion for forming an opening (10), whereby the conductor circuit (6) is exposed. This opening may be formed as a hole for conduction by forming a metal plating film on an inner surface thereof. It is preferable that an external connecting pad be formed so as to cover the opening. The film of coating of a metal is formed by using an electric plating lead, which is preferably cut off by a laser beam after the electric plating has finished.

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.

Abstract: A method of fabricating a gear is disclosed. The method may include loading a donut blank onto a pallet through a bore in the donut bank. The method may further include loading the pallet and donut blank onto a plurality of different machines and performing a plurality of different machining processes on the donut blank to fabricate a gear.

Abstract: Methods of manufacturing an adhesive precoated orthodontic appliance are carried out by determining a quantity of the adhesive that is representative of a norm for bonding a particular appliance to a tooth that is representative of a patient population. An electronic template is provided to an orthodontic practitioner that includes data representing the norm. The practitioner may then elect to instruct the manufacturer to ship the selected appliance to the practitioner with a quantity of adhesive pre-applied to the appliance that differs from the determined norm.

Abstract: Apparatus/systems and methods are disclosed for facilitating installation of conduit systems through construction openings. Exemplary embodiments enable one to form, maintain, and controllably block the openings and incorporate the apparatus/systems into the finished construction. Exemplary apparatus/systems disclosed include (i) a structural member that includes one or more side walls defining an opening, one or more base flaps, and one or more top flaps, and (ii) at least one cover to controllably block said opening. Exemplary methods disclosed include (i) installing said apparatus/system that includes (1) securing the structural member relative to a deck, and (2) introducing cement/concrete relative to structural member covering the base flaps and fixing the structural member with respect to the deck, and (ii) installing a conduit system through an apparatus/system-defined opening that includes encasing the cover(s) together with the installed conduit system.

Abstract: A dual purpose razor blade comprising a substantially V-shaped detachable gauge attached to a disposable shaving razor. The gauge comprises two inclined surfaces creating a lip. The lip has a plurality of openings going thorough it creating a comb-like effect. The blade is positioned in close proximity to the openings in the lip, wherein the line of the blade is substantially parallel to the lip and further positioned substantially in the middle of the openings. Whenever the lip of the gauge is stroke against hair, only the hair that enters the openings meets the blade and is consequently being cut. Thus hair thinning effect is achieved. Detaching the gauge leaves the user with a regular shaving razor, both shaving and hair thinning in the same device.

Abstract: The invention relates to safety razors that include a blade unit carried on a handle, a vibration device powered by a battery under control of a control device, and a switch, e.g., included in the handle, to switch on and off an electrical connection between the battery and the control device; a storage tray on which the razor is stored when not in use including a magnet so that the switch closes a connection between the battery and the control device when the razor is separated from the storage tray; and a timing device to interrupt the supply of power to the electrical arrangement if the razor is not returned to the razor holder within a predetermined time period after being removed from the razor holder.

Abstract: The invention relates to a personal care system (1) comprising an electrical shaver (3) and a cleaning device (5) for cleaning a shaving head (7) of the shaver (3). The cleaning device comprises a container (11) for a cleaning liquid (13) and a supporting member (15) for the shaver. According to the invention the cleaning device comprises a displacing system (17) for displacing the supporting member relative to the container from a first position in which the shaving head, when in operation the shaver is supported by the supporting member, is not in contact with the cleaning liquid in the container, to a second position in which the shaving head, when in operation the shaver is supported by the supporting member, is at least partially immersed in the cleaning liquid in the container.

Abstract: The present invention relates to a fluid shut-off valve comprising a valve body and a control element for said valve rotatable within said body in order to control the flow of said fluid, s characterised in that said control element includes a C-shaped recess such as to present only an upper horizontal first portion connected to a vertical lateral second portion, which is connected in its turn to a lower horizontal third portion.

Abstract: A coaxial cable preparation tool is provided wherein the tool includes a body, having a first end and a second end, the first end including a first cavity configured to accommodate insertion of a coaxial cable therein. An outer conductor blade is located near the first end of the body and is movably operable with the body to cut an outer jacket, an outer conductor, and an inner dielectric of the cable when the cable is inserted into the first cavity. A center conductor chamfering member is positioned at the back of a second cavity, the second cavity extending from the second end of the body. A dielectric coring blade is positioned within the second cavity, and a jacket stripping blade is positioned at least partially within the second cavity. A corresponding method of coaxial cable preparation is provided.

Abstract: An apparatus for partitioning a food mass, such as a solidified egg, is disclosed including a base, a holder for supporting the food mass, and a plurality of cutting members for partitioning the food mass, wherein the holder is rotatable to permit the cutting members to partition the food mass in a first orientation and in a second orientation. The apparatus further includes a retainer positionable on a top surface of the food mass having passageways permitting the cutting members to pass through a portion thereof. The apparatus may include a cleaning plate receivable by portions of the holder in a position below the food mass, the cleaning plate being removable from the holder to remove food matter from between the support portions. The apparatus may include a lock for securing apparatus in a closed or lowest position for storage.

Abstract: A comb attachment for a hair trimmer includes a comb body having a leading edge and a rear portion. The rear portion is configured to couple the comb body to the hair trimmer. The comb attachment further includes a plurality of tines at the leading edge of the comb body, a magnet assembly configured to magnetically couple the comb attachment to the hair trimmer, and a recess formed in the rear portion of the comb body. The recess is configured to receive the magnet assembly.

Abstract: A cutting guide for use in cutting material using electric scissors or a similar tool includes an elongate cutting channel extending along a support surface. Opposing lower sections of side walls generally adjacent to a bottom of the channel are generally parallel and define a lower region of the channel therebetween having a generally uniform width for receiving a counter-blade of the electric scissors and allowing sliding movement of the counter-blade along the length of the channel. An upper region of the channel has a width greater than the width of the lower region of the channel for receiving a shearing blade of the scissors and permitting the oscillating movement of the shearing blade with respect to the counter-blade when the counter-blade is received in the lower region of the channel.

Abstract: An instrument for feeding solid nourishment and liquid nourishment by a care giver independently of each other typically to an infant and/or a physically-challenged individual using only one hand if the care giver. The instrument includes a head and a handle. The head is for taking the solid nourishment for the infant and/or the physically-challenged individual. The handle extends from the head and contains a reservoir for containing the liquid nourishment. The handle has an end opposite to the head for feeding the liquid nourishment. By rotating the handle using the one hand, the solid nourishment and liquid nourishment are taken independently of each other.

Abstract: A utensil having a handle portion, a utensil portion, and a connector. The handle portion having a dual design consisting of a first surface with a first decorative handle design and a second surface with a second decorative handle design. The utensil portion has an upper surface and a lower surface. The connecter attaches the handle portion to the utensil portion, such that the connector allows the first and second decorative handle designs to vary relative to the upper surface and the lower surface of the utensil portion.

Abstract: A power cutter comprising: a housing 2; an engine 24 mounted within the housing 2; a support arm 7 mounted on the housing and which projects forward of the housing; a blade mounting mechanism 70,90, 86, 92 rotatably mounted on the end of the support arm and which is capable of being rotationally driven by the engine 24 when the engine is running; a liquid fuel aeration mechanism 126 to generate aerated fuel for the engine; an air intake 314 for the provision of air for the liquid fuel aeration device 126; an air filtration mechanism 316 to filter the air drawn in from the air intake for the liquid fuel aeration mechanism; a fuel tank 124 for providing fuel to the liquid fuel aeration mechanism; and an exhaust 146 through which the exhaust gases generated by the operation of the engine are expelled; wherein the air filtration mechanism comprises an air filter 320 comprising a plurality of pleats and wherein the air filtration mechanism further comprises an air filter cleaning mechanism comprising a moveable pl

Abstract: The model elementary flexor is a polyhedral panel represented by a four-angle star-like pyramid which is formed by thin elastic three-angle faces with hinge junctions. It has two symmetry planes which intersect the petals of flexor. An essential geometric property of the flexor is following: when the middle polyhedron is projected into the plane of the boundary, then each face is mapped to a triangle whose doubled intrinsic and extrinsic angles adjacent to the boundary are equal to ?/2?? Ta ?/2+? respectively, where ? is the third angle of the three-angle and it belongs to the interval (0,?/2). As consequence, the presented device is more general than its prototype, the right star-like pyramid “Model ideal flexor”, disclosed in UA Patent No. 54692. The invented device belongs to various areas of technique and industry where polyhedral shells with freely changed geometric forms are applied: architecture, aircraft construction, shipbuilding and precise instrument-making.