Abstract: A pre-plated lead frame comprises a substrate comprising copper or a copper alloy which has a first side and a second side opposite to the first side. A first plating layer comprising nickel is plated on the first and second sides of the substrate and a second plating layer comprising palladium is plated onto the first plating layer on the first and second sides of the substrate. A third plating layer comprising gold is then plated onto the second plating layer on the second side of the substrate, the third plating layer on the second side of the substrate having a thickness of more than 3 nm. On the first side of the substrate, there is either no gold plated onto the second plating layer, or a third plating layer comprising gold plated onto the second plating layer which has a thickness of 1.5 nm or less.

Abstract: An electric wire protection structure has a structure in which a branch portion of an electric wire bundle is protected. In the electric wire protection structure, a protection portion covers the branch portion of the electric wire bundle, the protection portion being formed by heating and compressing a thermoplastic material in a state of covering at least the branch portion of the electric wire bundle.

Abstract: A printed circuit board includes a signal layer having a pair of differential transmission lines thereon. An eye width and an eye height of an eye diagram obtained at output terminals of the pair of differential transmission lines are variable according to a distance between the pair of differential transmission lines. The eye width and the eye height of the eye diagram are at minimum values when the distance between the pair of differential transmission lines is at a first distance. The eye width and the eye height meet requirements of the pair of differential transmission lines for the eye diagram when the distance between the pair of differential transmission lines is set at a second distance, the second distance is less than the first distance.

Abstract: A multi-layer circuit board having a connector portion of an inner layer substrate being exposed, the multi-layer circuit board comprising: an inner layer substrate in which an inner layer circuit is formed, the inner layer circuit including the connector portion; and an outer layer substrate having an outer layer circuit formed on an insulating layer and having a region corresponding to the connector portion peeled off, an inner layer circuit side of the inner layer substrate and an insulating layer side of the outer layer substrate being adhered to one another via an adhesive layer so as to face one another, and a conductor layer other than the connector portion of the inner layer circuit being adhered to the outer layer substrate directly by the adhesive layer.

Abstract: A capacitive touch panel sensor in which waviness generated in a film furnished with a transparent electrode pattern can be small. The touch panel sensor according to the present invention includes a first film, a first transparent electrode pattern formed on the first film, a first adhesive layer laminated on the first film so as to cover the first transparent electrode pattern, a second film laminated on the first adhesive layer, a second adhesive layer laminated on the second film, a third film laminated on the second adhesive layer, and a second transparent electrode pattern formed on the third film, wherein Da/Db is 0.5 to 0.9 where a total thickness of the second film and the second adhesive layer is Da, and a distance between the first transparent electrode pattern and the second transparent electrode pattern is Db.

Abstract: A resolution-adjustable touch panel and a manufacturing method thereof. The resolution-adjustable touch panel includes a substrate, a plurality of first, second, third and fourth sensor strings, and a flexible printed circuit. The flexible printed circuit board includes a plurality of first, second, third and fourth pins. The first and third pins are respectively and electrically connected to the first and third sensor strings, and the second and fourth pins are respectively and electrically connected to the second and fourth sensor strings by dummy pins. From this, a different-resolution touch panel can be made from the substrate with the same sensor string. Thus, the cost for masks can be reduced.

Abstract: The present invention is a flexible printed circuit board provided with an insulating substrate and a wiring circuit provided on at least one main surface side of the insulating substrate, wherein the wiring circuit has a laminate having a first metal layer that contains first metallic crystal grains and a second metal layer that is adjacent to the first metal layer and contains second metallic crystal grains, with the first metal layer and the second metal layer being laminated along a direction perpendicular to the main surface of the insulating substrate, and the average grain size of the first metallic crystal grains is smaller than the average grain size of the second metallic crystal grains.

Abstract: There is provided a resin composition for a printed circuit board, including 100 parts by weight of a liquid crystal oligomer shown in a predetermined Formula; and 10 to 40 parts by weight of a rubber-modified epoxy resin.

Abstract: Disclosed herein is an embedded printed circuit board (PCB) including: a copper foil laminate; an internal electronic component inserted into the copper foil laminate; a first circuit pattern formed on a surface of the internal electronic component; and a second circuit pattern formed on the copper foil laminate. Since the surface space of the electronic component embedded in the substrate is utilized as a wiring space, a wiring design can be optimized, layers can be simplified, and an increase in the thickness of the substrate can be prevented. Also, malfunction of the embedded electronic component or a warping phenomenon of a PCB due to generated heat can be prevented.

Abstract: Disclosed herein is a method of manufacturing a conductive substrate, the method including: a first electrode applying operation of applying first electrodes on a substrate; a first electrode forming operation of forming the first electrodes of fine lines by partly removing the first electrodes; and a second electrode forming operation of forming second electrodes on the substrate from which the first electrodes are removed, thereby enhancing reliability in a whole product including the conductive substrate.

Abstract: A wiring substrate includes: a plate-like base material containing carbon fibers; a wiring layer formed on a surface of the base material; a first via including a first through hole penetrating through the base material, a first resin layer formed on an inner wall of the first through hole and including a second through hole, and a first conductive layer formed on an inner wall of the second through hole; and a second via including a third through hole penetrating through the base material and a second conductive layer formed on an inner wall of the third through hole, wherein an inside diameter of the third through hole is greater than an inside diameter of the second through hole.

Abstract: Embodiments of the present invention provide a wiring substrate that includes a structure where a plurality of projection electrodes are arranged within an electrode formation region on a substrate main surface. At least one among the plurality of projection electrodes has a larger outer diameter than an outer diameter of a via conductor and is a variant projection electrode which has a roughened upper surface. Embodiments of the present invention also provide methods for manufacturing wiring substrates having one or more of said variant projection electrode.

Abstract: A printed circuit board (PCB) stack-up has a signal via configured to transmit a signal through at least two different layers of the PCB stack-up, a reference structure that is at least a portion of a return path for the signal; and an unplated via disposed in an area surrounding the signal via. The unplated via is disposed in the area surrounding the signal via to improve the characteristic impedance of the signal via.

Abstract: A safety net system for blocking electromagnetic field (EMF) exposure from electronic devices is provided. The safety net system comprises a hair net for covering at least a portion of a head and a body net having a back portion for covering an upper back and shoulders, a first front portion for covering a right breast, and a second front portion covering a left breast. A first anti-EMF chip is mounted to the hair net, a second anti-EMF chip is mounted to the back portion, a third anti-EMF chip is mounted to the first front portion, and a fourth anti-EMF chip mounted to the second front portion. Upon positioning the hair net over the at least a portion of the head and upon draping the body net over the shoulders thereby covering the upper back and breasts, the anti-EMF chips block and shield EMF radiation from reaching the body part.

Abstract: A metamaterial for deflecting an electromagnetic wave is disclosed, which comprises a functional layer. The functional layer comprises a plurality of sheet layers parallel to each other, and each of the sheet layers comprises a sheet-like substrate and a plurality of man-made microstructures arranged in an array on the sheet-like substrate. The sheet-like substrate comprises a plurality of unit blocks, and each of the man-made microstructures and a corresponding one of the unit blocks occupied thereby form a unit cell. Refractive indices of the unit cells arranged in a first direction in each of the sheet layers decrease gradually. Each of the unit cells has an anisotropic electromagnetic parameter. Through use of the metamaterial of the present disclosure, deflection of the electromagnetic wave can be achieved.

Abstract: An adhesive-backed multi-channel RF signal cable comprises a main body having at least one conduit portion with a bore formed throughout and containing one or more RF signal channels, and a flange portion having an adhesive backing layer to mount the cable to a mounting surface. The adhesive-backed cabling provides for multiple channels of RF/cellular traffic to be distributed, where these channels can be dedicated to different carriers, each needing wireless distribution in a building, different services, and/or routing signals to different locations within a building.

Abstract: This disclosure provides apparatus, systems and methods for manufacturing electromechanical systems (EMS) packages. One method includes making an EMS package that includes an out-gassable anti-stiction coating. The anti-stiction coating may be a solvent that is included within part of a desiccant mixture. In some implementations, the method includes sealing an EMS device into a package and then heating the package using a temperature profile that out-gasses at least a portion of a residual solvent. The method may include an incubation bake cycle to distribute anti stiction material to display elements within the EMS package. The incubation bake cycle may also more evenly distribute contaminants within the EMS package so as to reduce their effects.

Abstract: A two part, curable, epoxy composition useful for potting or sealing electrical devices for use in hazardous locations. Cured reaction products of the epoxy composition meet most or all UL 674 requirements and are useful to seal apertures in electrical equipment. Equipment sealed with the disclosed compositions can meet the UL 674 requirement.

Abstract: The invention relates to a box (1) for accommodating and laying optical waveguides and/or copper conductors, with the box (1) comprising at least one housing (10) and at least one cover (20), with the cover (20) being attached to the housing (10) such that it can pivot, with the cover (20) being attached to the housing (10) such that it can be detached, with the cover (20) having at least one receptacle for a pin element (90), with the housing (10) having at least one pin element (90), it being possible for the at least one pin element (90) to be held by means of the receptacle for a pin element (90), and it being possible for the at least one pin element (90) to be displaced parallel to a pivot axis relative to the holding element (80).

Abstract: An operating room cable for electrically coupling a lead to a trial stimulator includes a trial stimulator connector electrically coupleable with the trial stimulator and a lead connector for receiving the lead. The lead connector includes a housing. A first lead aperture is defined in a second end of the housing in proximity to a first side of the housing. A first inner passage extends along an interior of the housing from the first lead aperture to the second end of the housing. A first stylet slit is defined along the first side of the housing and extends from a first end of the housing to the second end of the housing. The first stylet slit is formed between upper and lower casings of the housing. The first stylet slit is continuous with the first lead aperture and the first inner passage.

Abstract: Provided is an anticorrosive polyamide resin composition having excellent anticorrosive capability by possessing excellent adhesive strength to a polyolefin resin and a metal and excellent elongation. The anticorrosive polyamide resin composition contains a resin component that contains 70 to 90 mass % of a polyamide resin, and 30 to 10 mass % of an acid-modified polyolefin resin. A maleic acid anhydride-modified polyolefin resin is preferably used as the acid-modified polyolefin resin. Polypropylene is preferably used as the polyolefin resin.

Abstract: There is provided an earth cable connecting structure of a shielded electric wire for connecting a shield layer of the shielded electric wire to an earth cable. The shielded electric wire includes an inner insulating layer covering a core wire, the shield layer provided in an outer periphery of the inner insulating layer and an outer insulating layer covering the shield layer. A first crimping part is crimped to the shield layer of a part from which the outer insulating layer is removed. A second crimping part is crimped to a core wire of the earth cable in an outer surface side opposite to an inner surface of the first crimping part which faces the shield layer. The first crimping part and the second crimping part are formed integrally.

Abstract: A combined fracturing and perforating method and device for oil and gas well are disclosed. The method utilizes an explosion of a perforating charge (5) in a combined fracturing perforator to ignite primary gunpowder in the perforator, and burning of the primary gunpowder ignites secondary gunpowder in the perforator. The body of the perforating gun in the combined fracturing and perforating device is provided with pressure releasing hole (8) which is directly facing the jet direction of said perforating charge, and sealing sheet (9) is arranged on said pressure releasing hole (8). Inner gunpowder box (6), which contains the primary gunpowder, and outer gunpowder box (7), which contains the secondary gunpowder, are mounted on the cylindrical charge frame (4).

Abstract: A drilling apparatus includes a tubular body including an upper connection and a lower connection with a drill bit disposed thereon, and an axial borehole therethrough, wherein the upper connection is configured to attach to a drillstring, primary cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom. The drilling apparatus further includes backup cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom, and an activation system configured to selectively expand and collapse the primary and backup cutter blocks in response to changes in weight applied to the primary and backup cutter blocks.

Abstract: A system and method for monitoring underground drilling in which vibration is monitored by creating a model of the drill string using finite element techniques or finite difference techniques and (i) predicting vibration by inputting real time values of operating parameters into the model, and then adjusting the model to agree with measured vibration data, (ii) predicting the weight on bit and drill string and mud motor speeds at which resonance will occur, as well as when stick-slip will occur, so that the operator can avoid operating regimes that will result in high vibration, (iii) determining vibration and torque levels along the length of the drill string based on the measured vibration and torque at one or more locations, (iv) determining the remaining life of critical components of the drill string based on the history of the vibration to which the components have been subjected, and (v) determining the optimum drilling parameters that will avoid excessive vibration of the drill string.

Abstract: A method of boring through a formation includes providing a drilling machine and drill string and operatively coupling an earth bit to the drilling machine through the drill string. An air flow is provided through the drill string at an air pressure less than about one-hundred pounds per square inch (100 psi) and an overstrike force is applied to the earth bit, wherein the overstrike force is less than about five foot-pounds per square inch (5 ft-lb/in2).

Abstract: Borehole diameter enlargement occurs while drilling, circulating, reaming, and/or cleaning the borehole, and such borehole diameter enlargements can be detrimental to proper tripping of a drillstring or running of a casing string. Methods and systems are disclosed for detecting or measuring borehole diameter enlargement, diagnosing the cause of the borehole diameter enlargement, and potentially mitigating the borehole diameter enlargement based on the diagnosed and identified causes.

Abstract: The present invention is directed to a dynamic steering tool for use with a horizontal directional drilling machine. The tool comprises and inner member, an outer member, a steering member, a drill stem, and a drill bit. The drill stem extends from within a borehole to the surface while the outer member only extends the length of the inner member within the borehole. The outer member is powered via the use of a progressive cavity motor. In operation, the drill stem, inner member, and drill bit rotate in a clockwise position while the outer member rotates in a counterclockwise direction. Rotating the outer member opposite the inner member allows the outer member to remain stationary and cause the tool to steer while the inner member continues to rotate.

Abstract: The present invention describes a drill pipe in which various sections of the pipe are strengthened, or their shape is altered, in order to improve the wear and buckle resistance of the drill pipe. The sections are strengthened using various hardening methods such as heat treatment processes and/or expansion techniques. A sleeve can also be applied to the strengthened portions. Surface enhancers, such as hardbanding, can be applied to the strengthened portions or the sleeve in order to provide abrasion resistance or to reduce friction.

Abstract: A drill bit may include a bit body rotatable about a longitudinal axis and having, at one end, a connection for securing the drill bit to a drill string and having a face opposite the connection end; and a plurality of cutting structures having at least one fixed cutting structure disposed on the bit body face and at least one cutting body rotatably attached to the face of the bit body; wherein, in a rotated view of the plurality of cutting structures into a single plane, there is substantially no radial overlap between at least one fixed cutting structure and the at least one cutting body.

Abstract: In a two-part drilling tool for the percussive or rotary percussive drilling of holes in soil material or rock material, including a drill head (1) and an adapter part (7), which is fixed in an interior of the drill head (1) by way of interacting, complementary threads (11, 14) and is intended for providing the coupling to a drill string, wherein an end face (3) of the drill head (1) that is remote from a borehole interior rests on a complementarily formed stop or support surface of the adapter part (7), the end face (3) of the drill head (1) that is remote from the borehole interior and the stop or support surface of the adapter part (7) interacting therewith comprise complementarily formed wedge-shaped surfaces (4, 6) with end teeth (5, 8), and a lead angle (?1) of the wedge-shaped surfaces (4, 6) is smaller than a lead angle (?2) of an internal thread of the drill head (1) or the external thread interacting therewith of the adapter part (7) or of the drill string.

Abstract: The present invention embodies a drill pipe in which various damaged sections of the pipe are repaired in order to maintain or improve the wear and buckle resistance of the drill pipe. The sections are strengthened using various hardening methods such as heat treatment processes and/or expansion techniques. A sleeve can also be applied to the strengthened portions. Surface enhancers, such as hardbanding, can be applied to the strengthened portions or the sleeve in order to provide abrasion resistance or to reduce friction.

Abstract: Implementations of the present invention include a binder with high hardness and tensile strength that allows for the creation of drilling tools with increased wear resistance. In particular, one or more implementations include a binder having about 5 to about 50 weight % of nickel, about 35 to about 60 weight % of zinc, and about 0.5 to about 35 weight % of tin. Implementations of the present invention also include drilling tools, such as reamers and drill bits, formed from such binders.

Abstract: The present invention provides a drill bit (1), and a method for its manufacture, that is suitable for use within a casing drilling process. The drill bit (1) comprises a monolithic body (5, 6, 8) made from bronze, e.g. aluminium bronze or nickel aluminium bronze, and a relatively hard material mounted thereon. The hard material may comprise polycrystalline diamond (PDC), tungsten carbide or cubic boron nitride. In one embodiment the monolithic body comprises a crown (6) and a plurality of cutting members (5). The hard material may be mounted directly on the crown or, alternatively, on the cutting members (5). The described drill bit (1) facilitates the drilling of hard rock formations while still being capable of being drilled through by a standard oilfield drill bit.

Abstract: In various embodiments, a polycrystalline diamond compact (“PDC”) comprises a substrate including an interfacial surface having a raised region. The PDC comprises a polycrystalline diamond (“PCD”) table bonded to the interfacial surface of the substrate. The PCD table defines an upper surface and exhibits a thickness over the raised region. The PCD table includes a plurality of bonded diamond grains defining a plurality of interstitial regions. A first region of the PCD table adjacent to the substrate includes metal-solvent catalyst disposed interstitially between the bonded diamond grains thereof, and a leached second region of the PCD table extends inwardly from the upper surface. The interstitial regions of the leached second region are depleted of metal-solvent catalyst. The geometry of the PCD table and raised region may be selected so that residual compressive stresses therein are retained to a sufficient level after leaching to provide a damage tolerant/thermally-stable PCD table.

Abstract: There is provided a motorized cycle comprising a frame, a seat, handle bars and a plurality of suspensions mounted to the frame, a plurality of wheels each coupled to one of the plurality of suspensions, one or more motors connected to the wheels causing the wheels to rotate and a control mechanism to independently control the one or more motors in response to a side-to-side and a front-to-back tilt of the motorized cycle. There is also provided a control system for operating a motorized cycle comprising a control board including software, a plurality of sensors providing inputs to the control board, a plurality of motors receiving instruction from the control board wherein the software maintains the center of gravity of the cycle in both a side-to-side and front-to-back direction by instructing the motors to accelerate or decelerate.

Abstract: An electric vehicle which includes in-wheel motor driving devices and an independent-steering apparatus and is capable of making pivot turns within a minimum-required parking space, having a structure without a chassis and a part of the body protruding out of a minimum-required circular space necessary for the wheels to make pivot turning. In a case where the electric vehicle has four wheels including left and right front wheels and left and right rear wheels, an in-wheel motor driving device is incorporated only in the left and right front wheels, only in the left and right rear wheels, or in all of the wheels. An independent-steering apparatus serves for all of the wheels. A kingpin axis in each of the wheels makes an intersection with a road surface on a circle inboard of a vehicle chassis.

Abstract: The present invention provides track assemblies and a method that allow bringing the contact patch towards the inside (the outside) of the suspension arm, by providing a asymmetric track assembly, either by lowering at least one inside (outside) support wheel relative to the remaining support wheels, or by using a belt that comprises, transversally, at least one first profile on the outer (inner) side thereof lower than a second profile on an inner side thereof.

Abstract: A wheel assembly includes an attachment member with a spindle attachment interface and a brake attachment interface. A spindle is attached to the spindle attachment interface and a brake component is attached to the brake attachment interface. The spindle attachment interface is configured to be a detachable connection that allows the spindle to be selectively attached and detached from the wheel assembly.

Abstract: A utility vehicle can comprise a wheeled platform, a motor coupled to the platform and configured to propel the platform, at least one cleaning element coupled to the platform, wherein the at least one cleaning element is movable between a collapsed position and an expanded position, and one or more controls configured to move the at least one cleaning element between the collapsed position and the expanded position. The at least one cleaning element can also be movable between a raised position and a lowered position relative to the wheeled platform, and the one or more controls can further be configured to move the at least one cleaning element between the raised position and the lowered position.

Abstract: The Nature of This Invention is to Show That Just May Be, “We” as A Nation Can Free Our selves From The Grips Of “Fossil Fuel” That Has The Ability To Create Havoc And Turmoil Around The Entire World at One Time Or Another. It Became Perfectly Clear To me That This Can Become The Beginning Of A New Era When Key Management Of Our Environment Is Finally In Our Future. It Is Possible That It Can Even Get Better.

Abstract: A foldable cart assembly having a user tracking arrangement so as to follow movement of the user during motion over a field. The cart assembly has a plurality of ultrasound and RF sensors in communication with corresponding sensors in a remote handset transmission device carried by the user. The sensors provide timing, direction and distance information to a central processor on the cart for instructing individual electrical motors empowering the respective direction and speed of rotation of the cart's wheels.

Abstract: A vehicle body frame includes an upper frame, lower frame and a fastening member. The fastening member includes first and second bolts. The first bolt is provided to obliquely cross an axial line of a lower frame end connected to an upper frame end and to fasten the lower frame end to the upper frame end. The second bolt is provided to orthogonally cross the axial line of the lower frame end and fasten the lower frame end to the upper frame end.

Abstract: At least one of first and second hydraulic motor units that drive first and second wheels is of a variable displacement. A volume adjusting mechanism thereof is operated by an electric motor in accordance with manual operation or automatic operation based on difference in turning radius between the first and second wheels. A control device that controls the electric motor includes normal mode that operates the electric motor in accordance with the manual operation or the automatic operation and torque-up mode that fixes the variable displacement hydraulic motor to a first volume larger than a standard volume, and activates the torque-up mode at idling state in which a power source is in operating state and a pump-side volume adjusting mechanism is in neutral state and shifts the torque-up mode to the normal mode when a traveling speed reaches a first speed.

Abstract: A system that steers the rear wheels of the three wheeled vehicle in coordination with the operator turning the front wheel that improves handling, performance and safety. The rear wheels are steered by a rear end mounted powered steering rack that is controlled by a steering control computer that receives input from a variety of sensors including a sensor for vehicle speed and a sensor in the steering neck that measures the angular rotation of the handlebars as they are turned by the operator. Based on these inputs, using proprietary programming the steering control computer calculates the rate, timing and direction to turn the rear wheels. Rear steering offers advantages over front wheel only steering including being easier for the operator to turn the vehicle, a smaller turning radius, better straight line stability, better high speed handling, improved corning performance, improved steering response and improved safety.

Abstract: A marine source sub-array and method for generating a pressure wave in a body of water. The marine source sub-array includes a float configured to float in the body of water; base plates connected to the float through cables; plural individual source elements connected to the base plates and configured to generate pressure waves underwater; and a coverage plate located between the plural individual source elements and the float. The coverage plate has a surface area larger than a surface area of the float.

Abstract: A device structured to assist the hearing of a user by being removably connected to and disposing a user's ear in an enhanced hearing orientation. The device includes an elongated base, which may be disposable, and has a sufficient length to be disposed in an operative position behind the user's ear. Opposite ends of the base include an adhesive material secured to a common side thereof, wherein different ones of said opposite ends are respectively disposed and maintained in confronting engagement with a rear surface of the ear and adjacently disposed portion of the user's head. The base further includes biasing capabilities disposed and structured to exert a sufficient, forwardly and outwardly directed force on the user's ear to dispose and maintain it in the enhanced hearing orientation, when the base is in the operative position.

Abstract: Methods and devices for sound isolation are provided. A sound isolation device includes an expandable element and an insertion element. The expandable element is operatively attached to the insertion element. The expandable element includes an expanding medium, where the pressure of the expanding medium is varied to vary a sound isolation across the expandable element.

Abstract: In order to mitigate transmission to the passenger compartment of noise generated in the engine compartment, a dash silencer is installed on the passenger-compartment-side surface of the dash panel of an automobile, wherein the mounting operation is facilitated by improving the mounting structure for the dash silencer. A stud pin is provided to the passenger-compartment-side surface of the dash panel, a chevron-shaped slit is formed in the mat-shaped dash silencer, and the stud pin is inserted through the slit, whereby the dash silencer is mounted on the passenger-compartment-side surface of the dash panel, wherein, when the chevron-shaped slit is formed in the dash silencer , a lower portion separated by the slit is caused to project farther than the upper portion toward the passenger compartment, and the lower portion is caused to inflect into the passenger compartment so as to form a stepped shape.

Abstract: This system comprises: support portions (11) fixed to the building corresponding to the different floors (P) of said building; a series of evacuation walkways (12) mounted onto these support portions (11), and which extend around at least a portion of the perimeter of the floors, fitted with several windows (V) or feasible exits; several stairways (13) and access ramps (14) fitted between consecutive floors (P); a protective outer surface (2) made up of a series of panels (21); at least a proportion of the panels (21) of the protective outer surface (2) will be made of breakable material in order to provide openings in the aforementioned outer surface (2) for exiting or jumping to the outside; and cabinets (4) containing parachutes for personal use, accessible from at least the evacuation walkways (12) that correspond to the higher floors of the building.