Abstract: A roller skate includes a boot and at least a pair of wheels that are mounted to an underside of the boot. The wheels are oriented at an acute or perpendicular angle to the traditional straight ahead longitudinal direction of the boot so that, in use, the user moves at least somewhat laterally when skating. The orientation of the wheels can be adjusted with a lock-down device being used to fix the wheels in a desired orientation.

Abstract: A multi-use child seating apparatus is provided for attachment to a number of frame structures, including a shopping cart, a table, a walker unit, a child activity center, and the like. A seating unit includes a seating frame and a flexible seat for receiving a child in a seated position therein. A mounting mechanism attached to the seating frame is adapted for mounting the seating apparatus to a frame structure, such as the handlebar of a shopping cart, and at least one connector is provided to secure the seating apparatus to the frame structure and brace the seating unit from movement when a child is seated in the flexible seat. A plurality of legs may be movably connected to the seating frame and moved to a deployed position to engage a frame structure, such as a table, to further secure the seating apparatus to the frame structure.

Abstract: A hand truck includes handles; a ledge comprising a cavity; a fastening device comprising a quick release and a clamp; and a locking device comprising a hollow first section including an opening on either side, a hollow second section releasably put on the first section, the second section including an opening on either side, the openings being in registration to each other, a block member in the first section and including a transverse channel aligned with the openings and the cavity, a sliding lock pin in the cavity, the openings, and the channel to lock the first and second sections, the lock pin having a projection in the channel, a depressible shuttle member in the first section and including a hook partially disposed in the block member, and an inclined slot in the hook with the projection disposed therein, and an actuation rod releasably secured to the shuttle member.

Abstract: A steering stopper unit for vehicle includes a stopper that is disposed to a knuckle and a stopper bracket that corresponds to the stopper and is disposed to a lower arm that is rotatably connected with a lower portion of the knuckle, and includes a stopper plate, which is hingedly engaged with an end of the stopper bracket, selectively contacts a forward side or rearward side of the stopper bracket, and has a predetermined thickness.

Abstract: A tilting, preferably three-wheeled, vehicle is disclosed that has a tilting mechanism that allows the vehicle to have leaning characteristics substantially similar to those offered by an in-line two-wheeled vehicle, but that does not require complex linkages and/or control systems to operate effectively. A tilting linkage is operably secured to a frame to allow a pair of spaced apart wheels to remain substantially aligned with the plane of the vehicle throughout its range of movement while still allowing the steering axes of each wheel to intersect the substantially vertical centerline of each wheel. The linkage also allows the caster angle of each wheel's pivot axis can be optimized independently of the angle of the vehicle's handlebar steering shaft.

Abstract: A linkage-type air suspension system for supporting either a front steer axle or a rear drive axle includes a lower structure assembly which combines the lower control rods, a transverse rod and a stabilizer control system which functions as a single structure. The transverse control system includes a pair of lower beams which have one end thereof pivotally connected to mounting brackets secured to the frame members of the vehicle by pivot bearings. The other ends of the lower beams are pivotally connected to axle and wheel supports. A transverse control is secured to and extends between the lower beams.

Abstract: A skateboard-like personal vehicle comprises a platform, a pair of steerable front wheels controlled by an upright steering lever movable left or right about a longitudinal pivot axis by one hand of the rider, a pair of rear wheels, one of which is driven by a reciprocable foot pedal, and an upright post which can be gripped by the rider's other hand.

Abstract: In the specification and drawing a new brake system and a two-wheeled vehicle using the same are described. The new brake system includes a first brake to apply a first brake force on a first wheel of a vehicle and transfers the first brake force to physically actuate a second brake to brake a second wheel of the vehicle. A new-designed cantilever brake is disclosed to transfer the first brake force to actuate the second brake.

Abstract: A rear suspension system for bicycles includes a front triangle, a rear triangle and a shock absorbing unit pivotably connected between the front and rear triangles to allow the rear triangle to move at a regulated rate with regard to the front triangle. The seatstays of the rear triangle have two dropouts and two extension portions on two opposite ends thereof. The two dropouts each have a notch for engaging with a rear wheel shaft. The extension portions are pivotably connected to the shock absorbing unit and the front triangle. The chainstays have two respectively first ends thereof pivotably to the dropouts at two pivot points and two respective second ends pivotably connected to the seat tube. The pivot points are located above or on a line between a center of the bottom bracket and a center of the notches in the dropouts.

Abstract: A wheelchair comprises a frame and first and second rear wheels that are each independently mounted to the frame via a respective mounting hub. Each rear wheel is detachably mounted to its respective mounting hub at two or more distinct hub mounting points. Either or both of the hub mounting points can be movable with respect to a remainder of the hub, for example via a pivoting arrangement. A disk can be positioned at the rear wheel and a stop element located at the mounting hub can be selectively operated to interfere with the disk to prevent rotation of that rear wheel. The frame can comprise first and second spaced apart and unitary tubes which each extending in an unbroken manner from a wheelchair seat to a wheelchair forward region.

Abstract: A motorcycle grip pad comprises a base layer of elastomeric material having spaced bumps on a top surface. An adhesive layer is on a bottom surface. The area of the pad is between 1000 and 4000 mm2. A motorcycle grip system also includes a reaction patch of relatively rigid material having apertures spaced and arranged in the same way as the bumps on the pad. The patch is adapted for connection to a motorcycle rider's suit (74,88) or other apparel.

Abstract: The maximum security/maximum versatility ball mount assembly provides an assembly for securing a ball mount or other accessory shank to a receiver hitch on automotive vehicles, tractors, ATVs, and other vehicles equipped with a receiver-type hitch. As the shank of a hitch accessory or implement is inserted into a receiver, dual retractable hitch pins automatically engage the receiver when the pins align with the two hitch-pin apertures in the receiver tube, thereby securing the ball mount/accessory's shank to the vehicle's receiver. A shank end cap shields the hitch pin assembly's internal components from dirt and/or rust particles, and the end cap also serves as an innovative and useful alignment aid when inserting the shank into a vehicle's receiver.

Abstract: A drawbar assembly includes a shank that can slidingly engage a first hitch receiver having an interior opening with a first size, which may be a class I receiver with a one and one-quarter inch square opening and provisions for a one-half inch hitch pin. First and second adapter parts, each having two sides forming a right angle, are removably coupled to the shank on opposite sides. The drawbar assembly can slidingly engage a second hitch receiver having an interior opening with a second size, which may be a class III receiver with a two inch square opening and provisions for a five-eighths inch hitch pin. A threaded hitch pin may clamp the drawbar assembly to the receiver.

Abstract: A machine (100) includes a frame (102) portion and a tandem wheel arrangement, which includes a main linkage (312) and a stabilizing linkage (322) that are pivotally connected to the frame (102) portion. A first mount (304) and a second mount (304) are pivotally connected to the main linkage (312) and to the stabilizing linkage (322), such that the main linkage (312), the stabilizing linkage (322), the first mount (304), and the second mount (304) define a four-bar-linkage arrangement (202) that operates to transfer unbalanced torque loads from the first mount (304) and the second mount (304) to the frame (102) portion.

Abstract: A side airbag unit for a vehicle seat including a generally cylindrical gas generator unit having a longitudinal axis. The vehicle seat has a backrest with a front surface and a side surface. In order to achieve the result that the airbag requires little additional space and nevertheless is relatively easy to mount on the vehicle seat, the longitudinal axis extends generally parallel to the front surface and perpendicular to the side surface of the vehicle seat.

Abstract: The knee-protecting airbag apparatus is mounted on a lower region of a column cover covering a steering column of vehicle projecting rearward from an instrument panel. The airbag (47) folded and housed in a housing emerges and spreads in four directions from the housing for deployment in front of knees of a driver when fed with inflation gas from an inflator (41) that is stored inside the airbag (47) and disposed to the rear side of the housing. Folding of the airbag (47) before being stored in the housing is such that left and right areas of a region (50) attached to the housing is folded on the side of the column side wall (49) to reduce the lateral width L2 of the airbag (47) without superimposing the left and right areas of the mounting region (50) on the inflator (41) in the vertical direction and a folded region (63) on the front side of the mounting region (50) is located in parallel with and in front of the inflator (41).

Abstract: A module comprising a packaged airbag, wherein the airbag is configured to deploy on an interior side of a vehicle in a curtain arrangement; wherein the airbag is packaged so that the bottom of the airbag is folded then rolled in an outboard direction; and wherein the packaged airbag includes a folded portion located above the outboard rolled portion; and wherein the top portion is folded along a longitudinally extending crease to create a folded section located adjacent and outboard the rolled and folded sections. A module further comprising a Z-shaped folded portion above the outboard rolled portion, a second fold of the bottom portion in the outboard direction, a Z-shaped fold located between the bottom and top portions of the airbag, an inflator system, a plurality of mounting straps, and at least one tether on each of the fore and aft ends of the module.

Abstract: An automotive seat back foam pad assembly includes a seat back foam pad and a panel. The seat back foam pad is configured to receive a seat back frame and includes a side pocket. The side pocket has a sidewall portion and is configured to receive an air bag module. The panel is attached to the sidewall portion and attachable with the seat back frame. The panel is configured to maintain integrity of the sidewall portion during air bag module deployment.

Abstract: A gas generator for a safety system includes an explosible charge formed at least by a primary pyrotechnic compound, in a first chamber initiated by at least one initiator provided with a reinforcing charge and a secondary compound, in a second chamber, the decomposition of which is entailed by products of combustion of the primary compound, an interaction of the products of combustion of the primary compound and those of the secondary compound through an oxidation-reduction reaction occurring in a slightly confined volume, the first chamber communicating with said second chamber through a central nozzle and said second chamber being provided, at a first zone close to said first chamber, with orifices that discharge the gases and contain, in a second zone, said secondary compound; and means forming an obstacle to the passage of the gases installed in said second chamber between said first and second zones, said obstacle-forming means allowing the gases to pass into a central part and forming an obstacle to th

Abstract: An inflatable vehicle occupant protection device (14) includes a vertically extending central recess (200) and first and second lobes (202 and 204) positioned on opposite sides of the central recess. The central recess (200) and the first and second lobes (202 and 204) are defined at least partially by an elongated center panel (210) of the protection device (14). The center panel (210) includes first and second longitudinal edges (250 and 252) that are spaced apart from each other and that extend along the length of opposite edge portions of the center panel. The center panel (210) also includes first and second end portions (260 and 280) that are spaced apart and that are positioned opposite each other along the length of the center panel.

Abstract: A variable load limiting device for a vehicle safety belt assembly is provided for controllably restraining a vehicle occupant by the vehicle safety belt assembly during deceleration of a vehicle. The device includes a body including a fluid chamber for containing a free-flowing fluid therein. A wiper assembly is operably disposed in the fluid chamber and selectively coupled to the vehicle safety belt assembly. The wiper assembly creates a pressure differential within the fluid chamber when a force in excess of a predetermined value is applied to the vehicle safety belt assembly. A throttle valve is operably connected to the body for controlling fluid pressure in the fluid chamber.

Abstract: The invention relates to a device for holding sheets in a binder which form a folded stack, comprising a holding element (3) connected to the spine (2) of the binder (1). According to the invention, the holding element (3) engages behind the innermost sheet of the stack (4) at its fold (9).

Abstract: A method for assembling a scrapbook by selecting a set of non-traditional shaped components and assembling same into a final product is provided. The component for assembling may be displayed in either a paper media, or an electronic media.

Abstract: Leaf for composing a photo album, comprising a support (2) provided with a layer of glue (4) on either side, which the layers of glue (4) include at least a mix of a self-adhesive glue and a hotmelt.

Abstract: The adjustable bookmark is an original hand-crafted design that attaches to any size hard cover and paperback book. The bookmark design is unique as to how it securely fits and adjusts around books. This bookmark design consists of a minimum of three ribbons to fit between multiple pages of a book. This unique design allows for various styles, colors, and themes which appeals to its user.

Abstract: The invention relates to a portable data carrier (1) having a carrier (2) which has a first graphical representation (3) and a second graphical representation (4). The second graphical representation (4) is better protected against tampering than the first graphical representation (3). In addition, the second graphical representation (4) is configured as a reference for detecting tampering with the first graphical representation (3). The invention is characterized by the fact that only a partial area (5) of the first graphical representation (3) laterally overlaps with the second graphical representation (4) and there is no lateral overlap between the first graphical representation (3) and the second graphical representation (4) outside the partial area (5).

Abstract: A display apparatus that can be positioned within a file cabinet, a file drawer, a hanging file and/or any other suitable file index system. A container is formed by the sheet material. The container has an edge panel forming at least one releasable tab. Each tab can be released or positioned away from an outer surface of the edge panel. A label sheet or label assembly has printable labels and at least one identification label. The identification label has or displays an identifier that corresponds to a particular design parameter of the label sheet. The identification label can be attached to the tab. The container can house one or more label sheets.

Abstract: An insert (4) is provided for connecting standardized fittings (2) normally used for connecting standardized pipes with multilayer pipes (3). The insert (4) being slightly elastically deformable is adapted to be inserted into a fitting (2) and adapted to receive a pipe (3), wherein an outer circumferential face of the insert is substantially smooth for sealing between the fitting (2) and the insert (4) and an inner circumferential face of the insert (4) is provided with a sealing portion (4a, 4a1, 4a2) for sealing between the insert (4) and the pipe (3) and a holding portion (4d) for holding the pipe (3) in position.

Abstract: A connector spool system for connecting a first component and a second component of an industrial compression system includes a connector spool having a substantially cylindrical shape. The spool includes an axial end and a flange at the axial end, the flange defining a radial surface for positioning proximate the first component. A spacer is positioned between the flange of the spool and the first component, the spacer including radial surfaces for providing uniform compressive force transmission between the spool and the first component.

Abstract: Disconnectable connector assemblies, sets including the assemblies, and methods of using the assemblies, are disclosed.

Abstract: A fiberglass pipe-shaped insulator and a method of manufacturing the same are disclosed. The high-density fiberglass pipe-shaped insulator is manufactured by preparing a fiberglass needle mat formed at opposite sides thereof with cutting faces at unaligned positions, at least one surface of the fiberglass needle mat being coated with a binder prepared by mixing and agitating organic and inorganic substances, a fire retardant and water and selectively mixing and agitating a water repellent with the resultant mixture; press-forming the fiberglass needle mat using a press roller in a state wherein the fiberglass needle mat is wound on a forming roller; drying a press-formed fiberglass pipe-shaped insulator prior to separating the insulator from the forming roller; performing center cutting on the fiberglass pipe-shaped insulator; attaching an aluminum glass cross tape throughout an outer circumferential surface of the pipe-shaped insulator; and performing side cutting on the fiberglass pipe-shaped insulator.

Abstract: The present invention provides a novel locking pipe joint for use in fluid-carrying pipe systems. The locking pipe joint of the present invention provides a system of joints that will withstand the stresses and forces imposed on a pipe system carrying fluids during filed conditions. The joint is constructed on a push-fit principle. Sealing rings are used to make the joint leak-proof. Splines are provided to sustain the longitudinal forces imposed on the joint, and longitudinal ribs are provided on the outer surface of the jointed pipes to withstand the torsional loads. The joint is simple in its construction, easy to assemble in field and cost effective.

Abstract: The present invention relates to a coupling for cylinders or pipes. The invention provides an improved coupling having an innovative pipe grip preventing inadvertent separation of the two items being coupled. The improved releasable band-clamp coupling comprises a central housing of cross-section resembling a wide, low-wall channel, the housing being curved to be larger than the outer diameter of a pipe. Two curved outer clamp members each configured to contact a wall of the housing and to support a ring seal member and to support a sloped mechanical grip ring, there being further provided proximate to the ends of the curved outer clamp members a pair of substantially parallel pair of clamping extensions.

Abstract: A hose connector, in particular for exhaust pipes of motor vehicles includes a flexible line element, for example a metal bellows which is supported at one end face in the support member of an attachment carrier with torsional degree of freedom. A tension element is provided by which the line element can be maintained under pretension against the support member of the attachment carrier.

Abstract: The coupler is provided that has two ends or openings. On one end, the coupler is adapted for receiving a stainless steel pipe. The stainless steel pipe fits inside or into one end of the coupler and is securely and tightly held inside the coupler by a snap lock. An O-ring rests against the end of the stainless steel pipe and forms a seal when the stainless steel pipe is inserted into the coupler. On the other end, the coupler is adapted for receiving a plastic or PVC pipe. The plastic pipe fits inside a recessed opening of the coupler, and is securely and tightly held inside the coupler by a clamp lock or by glue. An O-ring rests against the end of the plastic pipe and forms a seal when the plastic pipe is inserted into the coupler.

Abstract: A fitting incorporating a crimp sealing device and a method of forming a seal between a length of corrugated tubing and the fitting are provided. A sealing crimp is formed over at least one corrugation of the tubing, where the sealing crimp can utilize a preformed bend or bulge to form a crimp and seal. Alternatively, the sealing crimp can apply pressure radially against an outer sleeve of the fitting, such that at least one corrugation of the tubing is compressed axially or radially to form a primary seal. The outer sleeve also can include one or more gaskets arranged between the outer sleeve and the tubing for forming a secondary seal. An inner sleeve can be received radially inside the outer sleeve, and one or more gaskets can be arranged between the inner sleeve and the tubing. Further, a jacket crimp can be applied against an end of the sleeve member to contact a jacket that at least partially covers the tubing.

Abstract: A method of joining a pair of tubular ends (1, 2) comprises: providing the tubular ends with intermeshing tapered edges (3,4); joining the tubular ends by inserting an adhesive between the tapered edges and pressing the tapered edges (3,4) together; arranging an axial load carrier collar (5) around the joined tubular ends; inserting an adhesive between the inner surface of the collar (5) and the outer surfaces of the joined tubular ends (3, 4); and inducing the adhesive to bond the inner surface of the collar (5) to the outer surfaces of the joined tubular ends. The axial load carrier collar (5) may be equipped with a series of flexible reinforcement strips (8, 9), which carry a majority of axial loads exerted on the tubular joint, such that only a minimal axial load is exerted on the bonded tapered edges (3, 4).

Abstract: An inlet hole capable of inserting a pipe thereinto is formed in a pipe joint body along an axis. Retainer attaching holes for attaching with a retainer that prevents detachment of the pipe are formed in a side surface of the pipe joint body to extend therethrough. These retainer attaching holes are configured symmetrically with respect to an X axis passing through a center of the inlet hole as a symmetrical axis. Thus, a circumference of the inlet hole opens symmetrically, so that the heat shrinkage condition after molding is equalized in the circumferential direction. Accordingly, it is not necessary to process a molding pin for the inlet hole with imbalance of heat shrinkage amount in mind, so that the molding pin becomes easy to process. In addition, the retainer can selectively utilize the retainer attaching holes at two positions, so that selective use depending on installation environment can be achieved.

Abstract: A connecting assembly for connecting a pipe with a connecting element having a conical bore is disclosed. The assembly includes: a longitudinal axis; a pipe having a pipe end configured for insertion in the conical bore; a supporting ring having first and second retaining surfaces; a union nut for screwing on threads of the connecting element and forming a tensioning surface; a cutting ring; and a collar disposed between the first pipe end and the first retaining face. The cutting ring is seated in the conical bore of the supporting ring and provided with a pressure surface for the impingement of force by the tensioning surface of the union nut, and has at least one first cutting edge. A collar bulge is provided on the outer surface face of the pipe can be formed when the first cutting edge cuts into the pipe. The outer diameter of the collar bulge is larger than the smallest support ring internal diameter.

Abstract: A vertical axis wind system for use in electrical power generation. The system includes a stationary base including a generator and has an elongate shaft rotatably coupled the base. The elongate shaft extends vertically from a lower end to an upper end along a vertical central axis and engages the generator. At least two arcuate blade assemblies are attached between the lower end and the upper end of the elongate shaft such that aerodynamic forces acting on the at least two arcuate blade assemblies rotate the elongate shaft for the generation of power.

Abstract: Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation.

Abstract: A superheater in a power plant that superheats steam to operation conditions exceeding an operating limit of an associated steam-producing boiler. The superheater combusts oxygen and fuel with cooled recycled combustion gas to produce a CO2-rich combustion product gas stream at a fixed temperature. The combustion gas is used as the heat transfer fluid in the superheater's heat exchanger. The CO2-rich flue gas stream allows for efficient capture of substantially pure CO2. The superheater may be retrofitted to an existing power plant as a separate component, external to the boiler. The plant may thus have its electrical power output increased, while its overall CO2 emissions per nit of generated power is decreased, even when inexpensive, readily-available fossil fuels are used as the primary fuel for filing the boiler and/or the superheater.

Abstract: An apparatus (2) is disclosed for generating relative motion between the apparatus and the surface of the sea on which the apparatus floats. The apparatus comprises a body (6) adapted to float on the water surface and which defines an annular chamber (28) above the water surface and in communication with said water surface, wherein the chamber is able to expand or contract as the height of the water surface varies as a result of wave motion, to enable movement of the body relative to the water surface.

Abstract: An apparatus is disclosed for a turbine for generating electrical power from water or air flow comprising at least one rotor disk having a plurality of hydrofoil blades, guide vanes, a cylindrical housing, and a generator means. A rim generator comprising a magnet race rotor rim and fixed stator coils in the housing is used. The apparatus is fitted with a screen to stop the ingress of debris and marine life, and a skirt augmenter device to reduce the Betz effect. The apparatus is preferably for sub-sea deployment and driven by tidal currents, but may be powered by river current or wave driven air or by wind. The apparatus may be deployed on at least one telescoping pole, tethered to the sea-bed and kept buoyant by buoyant concrete in the housing, or inserted in a darn, under a barge or in a tidal power array.

Abstract: A wind turbine is disclosed that includes a spaceframe mounted atop a support structure. The spaceframe houses and is integrated with a wind turbine drivetrain. The spaceframe transfers primary rotor loads and drivetrain torque to the support structure.

Abstract: A transmission, including a gear-train and an outer housing enclosing the gear-train, the outer housing including a torque reacting joint coupling a first section of the transmission to a second section of the outer housing, the torque reacting joint including mating indents between the first and second sections.

Abstract: A gearbox including a gear-train including an input and an output and a rotating conduit internally traversing the gear-train is provided. The rotating conduit is configured to receive lubrication fluid from one or more components downstream of the rotating conduit and deliver lubrication fluid to one or more components upstream of the rotating conduit. The components downstream of the rotating conduit rotate at a different speed than components upstream of the rotating conduit.

Abstract: An apparatus for converting an airflow into mechanical or electrical energy is provided. The apparatus may include a hollow column defining a longitudinal axis and a sail member coupled to the hollow column. The sail member may be configured to be exposed to the airflow. The sail member may define at least one slot positioned proximate the hollow column and extending substantially parallel to the longitudinal axis. A plurality of drawtubes may be disposed within the at least one slot. Each drawtube may include a leading edge member positioned adjacent to an opening at a first end of a tubular member. The tubular member may be fluidly coupled to the hollow column. An energy conversion device may be configured to convert air drawn through the hollow column into mechanical or electrical energy.

Abstract: A wind power installation comprising a pylon comprising a pylon, a generator supported by the pylon and rotor blades coupled to the generator. The wind power installation further includes a first door to allow entrance into and exit from the interior of the pylon, a first level disposed in the interior of the pylon and directly accessible via the first door, the first level having a lock space including living quarters or sanitary equipment disposed therein. In addition, the wind power installation includes a second door disposed between the lock space and other portions of the interior of the pylon, wherein the second door is moisture-tight, a second level, disposed in the interior of the pylon and accessible via the second door, and a power module including a transformer housed in a moisture-tight container and electrically coupled to the generator, wherein the power module is disposed in the other portions of the interior of the pylon.

Abstract: An exit device includes a housing, a latchbolt coupled to and movable relative to the housing, and an auxiliary bolt coupled to the housing and movable relative to the latchbolt. The exit device also includes a deadlock link coupled to the housing and movable relative to the latchbolt and the auxiliary bolt between a first position, in which the deadlock link allows movement of the latchbolt relative to the housing, and a second position, in which the deadlock link inhibits movement of the latchbolt relative to the housing. The exit device further includes a spring biasing the auxiliary bolt into engagement with a portion of the deadlock link to move the deadlock link toward the first position.