Abstract: A rear-view mirror and modular monitor system and method include an interior mirror that embeds a modular monitor behind see-through mirror glass. In some embodiments, the system includes multiple cameras, some in the vehicle, bus and/or truck, as well as some cameras outside the vehicle, bus and/or truck, advantageously providing the driver an opportunity to view what is happening, for example, in the back rows of the bus and/or cabin, while also using the mirror to look at objects in the bus and/or cabin that are visible using the mirror. The rear-view mirror and modular monitor system is configured to be easily assembled and/or disassembled when necessary for maintenance and/or to replace parts.

Abstract: A rear-view mirror and modular monitor system and method include an interior mirror that embeds a modular monitor behind see-through mirror glass. In some embodiments, the system includes multiple cameras, some in the vehicle, bus and/or truck, as well as some cameras outside the vehicle, bus and/or truck, advantageously providing the driver an opportunity to view what is happening, for example, in the back rows of the bus and/or cabin, while also using the mirror to look at objects in the bus and/or cabin that are visible using the mirror. The rear-view mirror and modular monitor system is configured to be easily assembled and/or disassembled when necessary for maintenance and/or to replace parts.

Abstract: A hurricane panel system on the outside of an opening that can be installed from inside a multiple story building, through an open window without requiring tools of any type or outside assistance. This panel system includes a pliable, fabric, polyester panel that has a pair of parallel, vertical hems each containing a hem cord that are sized in diameter to fit into a pair of parallel, vertical or horizontal tracks connected to the outside of the building adjacent a window. The pliable, fabric panel includes one or more fabric straps that can be used to manipulate the panel in and out of the tracks. One or more locking pins are used to secure the panel in place relative to the tracks.

Abstract: A cover assembly may include a housing and an elongated cover. The housing defines a chamber therein. The chamber is disposable in the ground adjacent to a side of the sand area of the jump pit. The elongated cover has a first end, a second end, and spaced-apart sides extending from the first end to the second end. The elongated cover is storable in a compacted configuration in the chamber of the housing below the surface of the ground, and the elongated cover is removable from the chamber and extendable in an uncompacted configuration over the sand area of the jump pit to conceal the sand area.

Abstract: Large format display systems are described that are reconfigurable between an open configuration designed for performing maintenance on the system and a closed configuration designed for normal operations of the display system. In the closed configuration, the display screen is intentionally subjected to a substantial amount of tensile force to advantageously stabilize the display screen. That substantial tensile force is generated by a sturdy stationary frame that the display screen is anchored against in the closed configuration. When the display system is reconfigured to the open configuration, the display system is no longer anchored against the stationary frame. The process of reconfiguring the display system from the closed configuration to the open configuration includes relieving most of the tensile force applied to the display screen using adjustable tensioning mechanisms of the display systems.

Abstract: A rear-view mirror and modular monitor system and method include an interior mirror that embeds a modular monitor behind see-through mirror glass. In some embodiments, the system includes multiple cameras, some in the vehicle, bus and/or truck, as well as some cameras outside the vehicle, bus and/or truck, advantageously providing the driver an opportunity to view what is happening, for example, in the back rows of the bus and/or cabin, while also using the mirror to look at objects in the bus and/or cabin that are visible using the mirror. The rear-view mirror and modular monitor system is configured to be easily assembled and/or disassembled when necessary for maintenance and/or to replace parts.

Abstract: An adjustable chair support system includes a first seat back support member spaced from a second seat back support member, and a seat back tensioning assembly that extends between the first and second seat back support members. The seat back tensioning assembly includes a carrier coupled to the first seat back support member, the carrier including an adjustable tension member and a first guide member, a pair of second guide members coupled to the second seat back support member, and a cable extending from the adjustable tension member into engagement with one of the pair of second guide members, with the first guide member, with the other of the pair of second guide members, and then returning to the adjustable tension member.

Abstract: A connector for a flexible substrate includes a first connector piece including a first plurality of through holes, a second connector piece including a second plurality of through holes, the second connector piece disposable in opposition to the first connector piece to align the first plurality of through holes and the second plurality of through holes to define, via the first plurality of through holes and the second plurality of through holes, a grommet, a plurality of first fastener receivers and a plurality of second fastener receivers and a channel, defined at least in part by the first connector piece, extending across the first connector piece.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed including6 a connector for a flexible substrate including a first connector piece including a first plurality of through holes and a second connector piece including a second plurality of through holes, the second connector piece disposable in opposition to the first connector piece to align the first plurality of through holes and the second plurality of through holes to define, via the first plurality of through holes and the second plurality of through holes, a grommet and a plurality of fastener receivers. The connector also includes a channel, defined at least in part by the first connector piece, extending across the first connector piece.

Abstract: A cushion pan includes a front and rear support part that extends from the front end to the rear end of a seat cushion and faces the lower face of the femoral region of an occupant and side support parts that extend obliquely upward from both right and left side edges of the front and rear support part and face side faces of the buttocks of the occupant. In addition, the front and rear support part and the side support parts may be integrally formed to reduce the number of components and assembling steps.

Abstract: A sign holder includes a pair of upright posts, each having a lower ground engaging end and an upwardly disposed portion having a serpentine area with a plurality of bend areas leading to an upper end which is not aligned with the lower end. A relatively thicker transverse member joins the upright posts such that the upper ends thereof are spaced farther apart than the lower ends thereof. The lower cross member positioned as a transverse member may constructed of wire or as a flat blade like member.

Abstract: An adjustable chair support system includes a first seat back support member spaced from a second seat back support member, and a seat back tensioning assembly that extends between the first and second seat back support members. The seat back tensioning assembly includes a carrier coupled to the first seat back support member, the carrier including an adjustable tension member and a first guide member, a pair of second guide members coupled to the second seat back support member, and a cable extending from the adjustable tension member into engagement with one of the pair of second guide members, with the first guide member, with the other of the pair of second guide members, and then returning to the adjustable tension member.

Abstract: An adjustable chair support system includes a first seat back support member spaced from a second seat back support member, and a seat back tensioning assembly that extends between the first and second seat back support members. The seat back tensioning assembly includes a carrier coupled to the first seat back support member, the carrier including an adjustable tension member and a first guide member, a pair of second guide members coupled to the second seat back support member, and a cable extending from the adjustable tension member into engagement with one of the pair of second guide members, with the first guide member, with the other of the pair of second guide members, and then returning to the adjustable tension member.

Abstract: The invention is directed towards a function activity handling arrangement for provision in a building as well as a method, computer program and computer program product for performing an activity of a function in a building. The arrangement comprises a wallpaper (10, 3, 14) with a group of embedded electrical wires. The arrangement may also comprise a user input detector (18) equipped with a wire connector for connection to the wire group, a pulse providing unit sending electric pulses to the wire group, a pulse response detecting unit detecting a group of response signals corresponding to the sent pulses and a pulse response analyzing unit that compares the response signal group with a set of response patterns and provides, if the detected response signal group matches a response pattern, user input data for a corresponding function.

Abstract: A limiting plate control mechanism and a scooter luggage being capable to use this limiting device mechanism are provided. This limiting control device includes the first shell, second shell, sliding pressing block, first slider, second slider, first elastic element and the second elastic element. The first shell and second shell consists of the cavity shell. The sliding pressing block, first slider, second slider, first elastic element and second elastic element are all located in the cavity shell. This limiting plate control device has a simple structure and friendly operation, which brings convenience to the user. This scooter luggage has a simple structure, and is easy to operate and fold. A kind of button shell and a scooter luggage being capable to apply this button shell are provided. This button shell includes a spilt frame which is provided with the first baffle and second baffle. The first baffle is provided with a limiting bump, and the second baffle is provided with a limiting groove.

Abstract: Embodiments provide fastening slats for use in a flexible tonneau cover system for covering and sealing a bed of a pickup truck. The fastening slat may include a substantially flat elongated slat having a width and a thickness. The elongated slat may be insertable in a channel of a side rail of the flexible tonneau cover system. The fastening slat may also include a first fastening portion coupled with a substrate that is configured to wrap around at least a portion of the elongated slat such that at least a portion of the substrate contacts a bottom surface of the elongated slat. The first fastening portion may be coupleable to a second fastening portion of a flexible cover of the flexible tonneau cover system that is extendable over a bed of a pickup truck.

Abstract: A screen track assembly for mounting and tensioning a retractable screen across an opening, the assembly having a generally U-shaped outer track member having an opening; an inner track member received within the outer track member, the inner track member adapted to receive a retractable screen, the inner track member being movable relative to the outer track member; biasing members to present a biasing force to extend the inner track member toward the opening of the outer track member; and adjustable mechanical fasteners to fix the position of the inner track member relative to the outer track member such that the screen may be tightened or loosened as required for proper functionality.

Abstract: A method, apparatus, and seating product that include a seat deck assembly with a tensioned fabric decking are described. The seat deck assembly includes one or a pair of frame rails attached along opposite edges of the decking. The decking includes an elastomeric textile. The decking or a first of the frame rails is attached to a first side of the frame. The second of the frame rails is placed in a rigid fixture. A force is applied by an actuator to the frame to move the second side of the frame toward the second frame rail and to stretch the elastomeric fabric. The second frame rail is couple to the second side of the frame and the assembled frame is removed from the fixture. Cushions, padding or an upholstered covering can complete embodiments of the seating product.

Abstract: A system for attaching mesh to a frame and applying tension to the mesh is described. The system includes a locking strip slot in a movable frame member that permits mesh and an attached locking strip to be inserted into the slot from the top. The locking strip may be asymmetric. The system further includes a rigid frame that can hold the movable frame member under tension. The system also includes gripping the movable frame member at the locking strip slot to apply tension to the mesh. A simple hand tool may be used for engaging the locking strip slot and leveraging against the rigid portion of the frame to apply the tension. A simple hand tool may be used for separating the movable frame member from the rigid frame to remove the mesh.

Abstract: The invention relates to a screen tensioning system having a mesh screen and a U-shaped channel that engages an edge of the mesh screen. A clamp engages the U-shaped channel and the mesh screen. A frame having a substantially H-shaped cross section, wherein parallel side members converge to define a longitudinal slot permit the mesh screen to extend through the longitudinal slot, yet the clamp remains secured within the frame. A plurality of fasteners secure the clamp to the frame and are tightened to apply varying degrees of local tension to the screen. Preferably, no fasteners are used to secure the screen to the clamp.

Abstract: A hail guard for cars includes a net with a thick mesh applied to a structure having two center rods joined by a hinge, two multiple hinges applied to the free ends of the center rods, and four net-stretching rods hinged to each multiple hinge. Each multiple hinge has pins with vertical axes suited to allow the net-stretching rods to rotate and a rotation pin whose horizontal axis is orthogonal to the center rods, suited to allow the rotation of the set of net-stretching rods. The net-stretching rods are arranged so that two of them, when open, are opposed to each other and two other ones are generically diagonal. Two or more supports are hinged to the center rods and each free end of each support is provided with suction cups or magnets suited to allow the structure to be stably and removably applied to the car roof.

Abstract: A decoration painting for facilitating the dismounting transport and the replacement of the canvas comprising a frame, a canvas and an elastic part, and the frame includes four borders which are detachably connected with each other, at least two rivet holes are uniformly distributed around the canvas which is covering on the body of the frame, the elastic part is connected with the two corresponding rivet holes. The decoration painting according to the present invention facilitates the disassembly and assembly department and the transport, and the canvas of the same size could be replaced as required, thus improving the utility while reducing the cost.

Abstract: The present invention is a modular partition system obtained by assembling removable elements. The system includes at least one mast and at least one panel made integral with each other. The panel includes a frame, on at least one face of which is stretched a canvas. The frame includes a retainer to this end of stretching, on its perimeter and longitudinally. The canvas includes, on the perimeter of its rear face, a hooking device aimed at cooperating with the retainer. The mast includes a profile, or an assembly of profiles, each profile having a device designed capable of permitting directly or indirectly fastening the panel. The present invention is essentially characterized in that the mast includes a device for retaining a mast canvas, at least a portion of which is aimed at covering at least the portion of the mast that is visible.

Abstract: A fabric rolling system includes a driven roller attached to a fabric. The roller is sufficiently strong and supported so as to bear increasing loads as the fabric is rolled. A fabric deployment device can also be included.

Abstract: An innovative, low-density, highly-insulating modular panel for use in many applications and industries. The panel consists of a frame that may be preformed or bent and may be made of rigid or flexible material, and a panel covering comprising at least one pocket of thin, low-density shade fabric that has the capability of sufficiently stretching to surround the frame when the pocket is pulled onto it. The pocket may be then secured, along any previously open end where the frame was inserted, by various fastening devices. The panel covering pocket may have additional features added, as described herein. The panel is durable and cost-effective, and has good solar-control and insulating qualities. It is also a windbreak panel, a noise-reduction panel, an impact protection panel, a water-resistant panel, a fall protection panel, and a pollution-control panel. Two or more panels can be joined to create a structure-protecting panel assembly or system.

Abstract: A framed architectural mesh panel system including a mesh panel; a frame assembly; and a tensioning system; wherein the tensioning system is integrated within the frame assembly.

Abstract: A frame assembly capable of self-stretching fabric evenly has an outer frame, a demountable inner frame mounted in the outer frame and a positioning mechanism with retaining flaps and engaging sections disposed between the inner frame and the outer frame. A patterned fabric covers a front of the inner frame and is wrapped on an outer annular surface of the inner frame. The inner frame is then pushed into the outer frame, so the fabric is held between the outer frame and the inner frame, and is stretched and evenly smoothed by the positioning mechanism of the frame assembly. When the inner frame is pushed out of outer frame, the fabric can be changed and replaced with another fabric with a different pattern. Therefore, replacing the fabrics on the frame assembly is easy and the fabrics are not damaged.

Abstract: A mounting system and method for tautly mounting a flexible material sign includes a plurality of mounting springs affixed to an associated sign structure. Each of the plurality of mounting springs includes a base portion, a grasping portion and a spring portion. The base portion is adapted to be secured to an associated sign structure, such as a structure to which the flexible material sign is to be mounted, a frame or similar structure surrounding the flexible material sign, etc. The grasping portion includes a finger adapted to be received within an aperture of the flexible material sign. The spring portion is disposed between the base portion and the grasping portion for applying a tension to the flexible material sign.

Abstract: A panel for tensioning fabric such as a silkscreen mesh is described. The panel includes locking strips secured to the edges using stitching through the mesh and locking strips. A method for fabricating the panel and tensioning the panel on a frame is also described. Locking strips may be stitched to edges of the fabric or mesh.

Abstract: A system for attaching mesh to a frame and applying tension to the mesh is described. The system includes a locking strip slot in a movable frame member that permits mesh and an attached locking strip to be inserted into the slot from the top. The locking strip may be asymmetric. The system further includes a rigid frame that can hold the movable frame member under tension. The system also includes gripping the movable frame member at the locking strip slot to apply tension to the mesh. A simple hand tool may be used for engaging the locking strip slot and leveraging against the rigid portion of the frame to apply the tension. A simple hand tool may be used for separating the movable frame member from the rigid frame to remove the mesh.

Abstract: A frame unit for tensioning a printing screen, the frame unit comprising a frame including at least one frame member, the at least one frame member comprising: a supporting frame element; at least one engagement element for engaging a fitted printing screen to tension the same, wherein the at least one engagement element comprises a body which is pivotally coupled to the supporting frame element such that the at least one engagement element is pivotable in one, tensioning sense to tension a fitted printing screen and the other, opposite sense to adopt a configuration in which a printing screen can be fitted to or removed from the frame unit, a first, engagement arm extending from the body for engaging a fitted printing screen, and a second, biasing arm extending from the body to which a biasing force is applied to bias the at least one engagement element to pivot in the tensioning sense; and at least one biasing element operative to apply a biasing force to the biasing arm of the at least one engagement eleme

Abstract: A spring loaded filter clamping frame includes a rear frame section which defines an interior space to secure a filter element. The rear frame section includes a projection extending toward the interior space and a rear latch mechanism. A front frame section defines an interior space and is slidably engaged with the rear frame section. An aperture in the front frame section interacts with the projection. A front latch mechanism with a latch mechanism biasing member interacts with the rear latch mechanism. A frame biasing member is located between the rear frame section and the front frame section. The frame biasing member applies a force urging the rear frame section and the front frame section apart, resulting in a filter clamping frame. In further examples, the frame biasing member is a coil spring and the latch mechanisms are hooks.

Abstract: A projection screen apparatus is disclosed for displaying an image projected by a projector. The projection screen apparatus includes a frame and a screen. The frame includes a plurality of frame members and corner members.

Abstract: A canvas stretching assembly has adjustable stretching bars connecting in an end-to-end configuration that allow for the stretching of a canvas, even after the canvas is mounted thereon, with the degree of stretching being adjustable in multiple directions. The canvas stretching assembly, when disassembled, may be compactly stored, which is especially appreciated for shipment purposes.

Abstract: A screen extending frame in which a screen attached thereto is not distorted even when a screen extending jig is removed therefrom for storage or transportation is provided. Cut grooves are formed from the inner side to the outer side of, or from the outer side to the inner side of the direction, or in both directions of couplings of the screen extending frame constituted by connecting four frame members in a rectangle shape by means of welding, or the like, and the cut grooves enable the couplings to deform. The four frame members constituting the screen extending frame, which are individual bodies, join by corner members, and connecting portions are inclined with respect to the longitudinal direction of the frame members, thereby gaps are created in the connections. Alternatively, elastic elements are placed at the connections of the four frame members constituting the screen extending frame.

Abstract: A sheet material tensioning apparatus includes frame members interconnected one with another to define a closed contour. The apparatus applies tension to sheet material by imposing a separation between frame members to expand the closed contour. Beneficially, the sheet material tensioning apparatus includes an edge-bridging mechanism, such as a spline, to span the gap between the separated frame members. The edge-bridging mechanism maintains the continuity of the edge supporting the sheet material. The sheet material apparatus may include a crossbar assembly to add rigidity to long frame members, while maintaining planar alignment even under considerable compression.

Abstract: A cladding apparatus is provided for the interior of an aircraft that includes, but is not limited to at least one two-dimensional fabric sheet, at least one guide device, and at least one tensioning element. The guide device is configured to be attached in the interior along a direction of extension of the interior, and slidably guide the fabric sheet at least in a first section of the interior along the direction of extension. The tensioning element is, furthermore, configured to be attached in the interior, and by producing a tensile force that acts on the front edge and/or the rear edge of the fabric sheet to stretch taut the fabric sheet along the direction of extension of the interior.

Abstract: A screen system in which a mesh is connected to a frame through a tensioning system. The tensioning system includes a plurality of holders which are fastened to edge portions of the mesh and a plurality of adjustable tensioners which connect the holders to the frame. Tension in the mesh and the frame can thereby be adjusted after the screen has been assembled.

Abstract: An innovative, low-density, highly-insulating modular panel for use in many applications and industries. The panel consists of a frame that may be preformed or bent and may be made of rigid or flexible material, and a panel covering comprising at least one pocket of thin, low-density shade fabric that has the capability of sufficiently stretching to surround the frame when the pocket is pulled onto it. The pocket may be then secured, along any previously open end where the frame was inserted, by various fastening devices. The panel covering pocket may have additional features added, as described herein. The panel is durable and cost-effective, and has good solar-control and insulating qualities. It is also a windbreak panel, a noise-reduction panel, an impact protection panel, a water-resistant panel, a fall protection panel, and a pollution-control panel. Two or more panels can be joined to create a structure-protecting panel assembly or system.

Abstract: A canvas stretching assembly has adjustable stretching bars connecting in an end-to-end configuration that allow for the stretching of a canvas, even after the canvas is mounted thereon, with the degree of stretching being adjustable in multiple directions. The canvas stretching assembly, when disassembled, may be compactly stored, which is especially appreciated for shipment purposes.

Abstract: The present invention is a modular partition system obtained by assembling removable elements. The system includes at least one mast and at least one panel made integral with each other. The panel includes a frame, on at least one face of which is stretched a canvas. The frame includes a retainer to this end of stretching, on its perimeter and longitudinally. The canvas includes, on the perimeter of its rear face, a hooking device aimed at cooperating with the retainer. The mast includes a profile, or an assembly of profiles, each profile having a device designed capable of permitting directly or indirectly fastening the panel. The present invention is essentially characterized in that the mast includes a device for retaining a mast canvas, at least a portion of which is aimed at covering at least the portion of the mast that is visible.

Abstract: A “pop up” portable display apparatus includes a flexible frame and a tensioned fabric having a perimeter hem, such that the tensioned fabric is maintained by the flexible frame and integrated with the perimeter hem in order for the tensioned fabric to expand with the flexible frame to produce a display area and reduce with the flexible frame for ease of transport.

Abstract: A security screen comprising a frame having an outer edge which defines the outer perimeter of the frame and further having an inner edge (12) which surrounds an open portion of the frame, the outer edge of the frame being dimensioned such that in use the security screen is receivable across an opening to close the opening, a perforate sheet element (29) received in the open portion of the frame to close the open portion, the edge of the perforate sheet element being formed with a lip (31) extending from one face of the perforate sheet element, the inner edge of the frame formed with a recess (13) having an entry extending across at least a portion of the width of the inner edge, the recess extending along the inner edge, the recess having two opposed side faces (15, 16) extending from the inner edge, one side face (16) of the recess having a zone (23) located inward of the inner edge and extending laterally from the recess, the edge of the perforate sheet element received within the recess such that the lip

Abstract: A tarpaulin mounting frame for tightening a tarpaulin includes a frame profile having at lease one groove. A anchor profile having a rounded-off foot on its edge facing the tarpaulin, wherein the rounded-off foot is insertable into the groove of the frame profile and is pivotable therein. The anchor profile has at least one receptacle for a weatherstrip, wherein the anchor profile reaches a position substantially parallel to the plane of the tarpaulin by pivoting around the foot and thereby tightens the tarpaulin, wherein the anchor profile between the foot and the receptacle for the weatherstrip is in contact with the frame profile.

Abstract: A panel of material enabled in an erect unfurled position using one or more diagonal support members attached at diagonal corners. Vertical and/or horizontal support members increase panel rigidity. Connecting at least three panels produces a collapsible upright flexible enclosure. Attaching a bottom panel produces a container. Attaching carrying straps to the top of the upright flexible container allows it to be carried and folded up. A panel can be attached to the top edges permanently or with some type of fastening means. The present invention can also be used as a housing structure. Placing a grommet in the middle of the roof and using a vertical pole to hold the roof up prevents roof sagging. Removing the roof's vertical support pole allows the roof to sag for rain water collection using a cistern in the middle of the enclosure. Support members can be removed for washing or folding.

Abstract: At least two upright subassemblies, each with a base, radial positioning members; an outer tubular member, an inner tubular member slidably received in the outer tubular member; a plunger for selective engagement with aperture(s) in the outer tubular member, upper and lower horizontal bars secured to the radial positioning members, and a flexible display secured to each set of upper and lower horizontal bars, the radial positioning members for selective positioning between selected convex, concave, in-line and right angle positions.

Abstract: A sliding screen assembly (1) with a screen (3), a pull bar (4) for movement between an open and a closed position, a series of guide wires (9,10) which pass through the screen (3) and pull bar (4) to be attached to an adjacent frame (2) of the assembly (1), the assembly (1) including a cassette (30) mounted to the frame (2) for fastening ends of the guide wires (9,10), the cassette (3) having an anchor block (32) to secure the cassette (30) in an associated upper track (7) and/or lower track (8) of the assembly (1) and a fastening mechanism (43) to adjustably secure the wires (9,10) to the cassette (30).

Abstract: A screen fabric frame is disclosed including a locking strip and a frame member. The frame member includes a locking strip groove extending at least a portion of a length of the frame member. The locking strip groove includes a central groove configured to receive the locking strip, a minor side groove having a minor depth, and a major side groove distal the central groove, the major side groove having a major depth greater than minor depth of the minor side groove.

Abstract: An elongated element for the frame of a panel system comprising a flexible sheet material includes a main profile to which an auxiliary profile is associated. The auxiliary profile is provided with means for anchoring an edge of the sheet material and it can be moved with respect to the main profile as a result of the driving of position control screws. The main profile is adapted to be fixed on the surface of a wall by connection means engaging a connection portion associated to it. The position control screws have a control formation which can be reached from the outside of the frame, when the main profile of the elongated element is fixed to a wall and the sheet material is anchored to the auxiliary profile.

Abstract: The invention relates to a stretcher lath to be used in a frame for a painter's canvas or the like, wherein the stretcher lath comprises a main part and attached thereto a flexible leg. The leg is flexible in a direction substantially perpendicular in the principal plane of the frame. The free end of the leg is located in or within the periphery of the frame. The invention further relates to a frame, comprising a stretcher lath according to the invention and to a painter's canvas fastened to a frame according to the invention. The invention also relates to a method for fastening a painter's canvas to a frame according to the invention.