Abstract: A vehicle body structure includes a dash panel separating a vehicle front part from a vehicle cabin, a front side member extending longitudinally of a vehicle body in the vehicle front part and having ends located rearward of the vehicle body, opposite to the dash panel, a floor frame member forming a floor frame of the vehicle cabin, and a plate-shape reinforcing member disposed further toward a center of the vehicle cabin with respect to the dash panel and the floor frame member to be opposite to the ends of the front side member. The reinforcing member includes an upper portion secured to the dash panel and a lower portion secured to the floor frame member, and has a curvature that is smaller than a curvature of the dash panel.

Abstract: A vehicle front structure includes a dash panel and a reinforcing member. The dash panel includes a steering column hole. The reinforcing member includes a center reinforcing member mounted in a center portion along a width of a vehicle and an outer reinforcing member attached outward along the width of the vehicle. The center reinforcing member and the outer reinforcing member are superposed and joined together on the dash panel around the steering column hole.

Abstract: A lower vehicle-body structure allows miniaturization of an undercover and prevents an increase in minimum ground clearance. In the lower vehicle-body structure, a vehicle body floor includes step-up portions connected to a floor tunnel on opposite sides of the floor tunnel in a vehicle width direction at least in regions where first and second cross members are disposed on the vehicle body floor. The lower vehicle-body structure includes a mount member that faces the floor tunnel and connects the step-up portions on the opposite sides of the floor tunnel, and includes first and second undercovers that cover a lower side of the mount member so as to be continuous with a bottom surface of the vehicle body floor on outer sides of the step-up portions in the vehicle width direction.

Abstract: In a suspension member having a closed cross section, insertion holes are respectively formed in an upper member and a lower member that are two opposing walls. A collar includes a cylindrical portion and a flange. The cylindrical portion is inserted through the insertion holes. On the upper member side, the cylindrical portion and the upper member are welded together, forming a weld bead. On the lower member side, the outer circumferential edge of the flange and the lower member are welded, forming a weld bead. The welding is applied so that the length of the welding line on the lower member side is longer.

Abstract: A roof frame (1) for a roof structure (2) of a motor vehicle is closed in the circumferential direction and can be mounted on a body shell structure of the motor vehicle and connected to a roof outer shell (3). The roof frame (1) is produced from a fiber composite material. A side of the roof frame (1) that faces the body shell structure of the motor vehicle has height-adjustable installation domes (5) and spacer elements (6) are attached to each of the installation domes (5). The roof frame (1) and the roof outer shell (3) are connected to each other in an integrally bonded manner.

Abstract: An exemplary removal assembly includes, among other things, a lock that rotates together with a powered tailgate when the powered tailgate is coupled to a vehicle in a coupled position and moved back-and-forth between an open and a closed position. The lock is rotatable between a locked position that blocks movement of the powered tailgate from the coupled position, and an unlocked position that permits removal of the powered tailgate. An exemplary removal method includes, among other things, moving a powered tailgate that is coupled to a vehicle in a coupled position. The moving transitions a lock from a locked position to an unlocked position. The lock in the locked position blocks movement of the powered tailgate from the coupled position. The lock in the unlocked position permitting removal of the powered tailgate.

Abstract: A rear bolster for a cargo transport includes a sheet metal stamping having a forward side configured to face under the cargo transport, and a rear side configured to face rearward of the cargo transport. A vertically-extending base surface is formed by the rear side. A left taillight mount is provided adjacent a left widthwise end of the sheet metal stamping. A right taillight mount is provided adjacent a right widthwise end of the sheet metal stamping. A relief is embossed rearwardly from the base surface to form a loading dock engagement feature. The relief includes a first portion extending over and/or under the left taillight mount, a second portion extending over and/or under the right taillight mount, and a third portion continuous with the first and second portions and extending between the left and right taillight mounts.

Abstract: A fairing configured to be positioned on a roof of a vehicle. The fairing has a forward end and a rearward end. The fairing comprises a flow controlling outer body defining a central forward opening. The fairing includes at least one actuatable panel movably coupled to the flow controlling outer body and a central body aligned with the central forward opening of the flow controlling outer body. At least one air channel open to the central forward opening that extends between the at least one actuatable panel and the central body. The fairing includes at least one actuator configured to move the at least one actuatable panel through a plurality of positions to direct an air flow along at least one of 1) the at least one air channel and 2) an outboard side of the at least one actuatable panel.

Abstract: A fairing assembly comprising: a support arm mountable to a frame rail of a vehicle, the support arm comprising a first portion having a first outwardly extending protrusion and a second portion adapted to be received by the first portion, the second portion comprising a distal portion; a fairing adapter adapted to mount a fairing to the support arm, the fairing adapter rotatably coupled to the support arm and rotatable from a first orientation corresponding to an aerodynamic position to a second orientation, the fairing adapter defining a first channel adapted to capture the first outwardly extending protrusion when the fairing adapter is in the first orientation to prevent second portion of the support arm from separating from the first portion of the support arm; and a releasable lock to lock the fairing adapter in the first orientation.

Abstract: An active hood vent system for a motor vehicle includes a hood vent, having a closure displaceable between a closed position and an opened position, and a control module. That control module is configured to adjust the aero balance of the motor vehicle by opening and closing the closure. Further, the control module may be configured to close the closure and thereby minimize engine compartment air from entering an HVAC inlet of the motor vehicle when the current operating temperature of the motor vehicle is below a predetermined temperature requiring engine cooling, and a current motor vehicle speed is below a predetermined speed where airflow over the hood limits ingestion of engine compartment air by the HVAC inlet.

Abstract: A two-wheeled vehicle is provided. The two-wheeled vehicle includes a chassis having a height, a length and a width, in a first wheel rotatably connected to the chassis, the first wheel having a perimeter, a diameter and a geometric center, and the diameter of the first wheel being at least 75% of the height of the chassis, a motor for providing a drive energy to the first wheel, an axle rotated by the motor, a drive gear connected with the axle such that the drive gear rotates with a rotation of the axle, and a plurality of teeth disposed about the first wheel and mechanically engaged with the drive gear at a location closer to the perimeter of the first wheel than to the geometric center of the first wheel.

Abstract: A motor vehicle having a first portion and a second portion movable relative thereto; the vehicle further includes an actuator arrangement by which the second portion is drivable relative to the first portion; and the vehicle having a control apparatus that is coupled to the actuator arrangement and controls the operation of the actuator arrangement; the actuator arrangement including at least two separate actuators arranged remotely from one another, which are each switchable between an operating state wherein an output member of the actuator outputs a force and/or a motion, and a passive state in which the output member does not, the actuators are synchronously operable in a synchronous operating mode, wherein one actuator, constituting a master actuator, is coupled directly to the control apparatus, and the at least one further actuator is connected to the energy supply of the master actuator only such that the at least one further actuator is supplied with operating energy, and is in the operating state,

Abstract: An apparatus is provided for retaining a spare tire in a storage position on a motor vehicle. The apparatus includes a retainer assembly and a cooperating post. The retainer assembly includes a housing and a first actuator, a first retainer and a first biasing element carried by the housing. The post includes a retainer receiver wherein the first biasing element biases the first retainer into engagement with the retainer receiver. A related method of removing a spare tire from a storage position in a motor vehicle is also presented.

Abstract: A portable towing system for a motorcycle or similar vehicle, such as a trike, the frame of which can be lowered to ground level to facilitate loading of the motorcycle or similar vehicle by pushing or riding the vehicle onto the frame without risk of the vehicle falling off the sides of a steeply inclined ramp. The towing system may be assembled, raised, lowered, and disassembled by a single person, if desired. The raising and lowering of the frame is effected by a lifting and lowering mechanism connected with the wheel assemblies.

Abstract: A hitch assembly, including a first frame for being attached to a tow vehicle and a second frame for being attached to a trailer. The second frame is movably engaged with the first frame and is adapted for fore and aft movement relative to the first frame along a plurality of ball bearings.

Abstract: A snowmobile assembly including a chassis and suspension system. The suspension system configured to allow a selected suspension travel. The snowmobile further including a cooling system assembly.

Abstract: The present invention relates to a system for assisting the driving of a vehicle comprising at least one hydraulic machine forming a pump (19), at least one hydraulic machine forming an engine (130, 140) and an open hydraulic circuit (100) extending through a tank (13) and comprising a suction duct (11) extending from the tank (13) to an inlet of the pump (19), a supply duct (15) extending from the outlet of the pump (19) to the inlet of the engine (130, 140) and a return duct (122) extending from the outlet of the engines (130, 140) to the tank (13), characterised in that at least one of the engines (130, 140) is an engine that can disengage the clutch, and in that the system comprises an element forming a restriction (180) and creating a loss of charge over the return duct and a means (190, 192) adapted for connecting to the engine casing, the part of the return duct (122) located upstream of the element forming a restriction (180) and for applying to the engine casing, from the return duct (122), a pressur

Abstract: An adjustable bicycle stand includes a pair of forward and rearward base members and a pair of right and left upright members supporting a bicycle wheel therebetween. Each upright member extends between both the forward and rearward base members. At least one of the upright members is adjustable relative to the forward and rearward base members.

Abstract: The present invention aims to provide a variable damper seat post, which comprises: a damper base provided at an upper end portion of a post; a seat connecting body disposed on the damper base of the post and coupled to a seat on which buttocks of a passenger are seated; a fixing unit for fixing the seat connecting body to the damper base; and a damper, interposed between the damper base and the seat connecting body, for varying positions of the seat depending on the movement of the buttocks on the seat, wherein the damper is composed of an elastic member that is pressed when a pressing force is applied and returns back to its original shape when the pressing force is released, and is interposed between the damper base and the seat connecting body.

Abstract: A chest support device is presented. The chest support device has a flexible shaft. The flexible shaft has a shock absorbing structure that has a proximal end and a distal end. The proximal end is coupled to a chest cushion and the distal end of the shock absorbing structure is coupled to a bicycle frame and the coupling between the shock absorbing structure and the bicycle frame allows for the shock absorbing structure to be removable.

Abstract: A system for fixing and transporting a storage bag for motorcycles including a support frame fixed onto the motorcycle and a carriage. The carriage includes a lower shell, provided with a substantially flat support surface and with a first group of coupling means for removably connecting to the support frame, and an upper shell, provided with a substantially flat support surface and with a second group of coupling devices for removably connecting to the storage bag. The support frame is provided with a third group of coupling devices for removably connecting to the support surface of the lower shell, whereas the storage bag is provided with a fourth group of coupling means for removably connecting to the support surface of the upper shell.

Abstract: The present invention relates to a 1. Chain casing for encasing of a chain spanning a main chain sprocket and a driven chain sprocket, such as comprising two free chain parts, a pulling chain part and a returning chain part, of preferably a vehicle, such as a bicycle comprising a frame, the chain casing comprising:—a main chain sprocket cover element for covering of the chain at the main chain sprocket, such as a pedal spindle chain sprocket:—a pulling chain part cover element for covering of at least a part of a pulling chain part between a main chain sprocket and the driven chain sprocket;—a returning chain part cover element for covering of at least a returning chain part between the main chain sprocket and the driven chain sprocket;—a chain tensioner cover element for covering of a chain tensioner assembly with the chain arranged therethrough. Furthermore, the present invention relates to a chain tensioner assembly, preferably fitting in the chain casing.

Abstract: A scooter having at least two front wheels, a rear wheel, a deck, a steering assembly that includes a handlebar and a steering tube, an electric motor configured to provide power, and a transmission configured to transfer the power provided by the electric motor. The transmission can be configured to transfer the power provided by the electric motor only to the rear wheel. In some configurations, the scooter includes a battery, a power switch, and a controller coupled to the power switch, the battery, and the electric motor. In response to receiving a signal from the power switch, the controller ramps up the voltage provided to the electric motor over an interval of time.

Abstract: An electric self-balancing vehicle including a top cover, a bottom cover, an inner cover, a rotating mechanism, two wheels, two hub motors, a plurality of sensors, a power supply, and a controller is described herein. The top cover includes a first top cover and a second top cover disposed symmetrically and rotatable relative to each other. The bottom cover is fixed to the top cover and includes a first bottom cover and a second bottom cover disposed symmetrically and rotatable relative to each other. The inner cover is fixed between the top cover and the bottom cover and includes a first inner cover and a second inner cover disposed symmetrically and rotatable relative to each other. The rotating mechanism is fixed between the first inner cover and the second inner cover. The two wheels are rotatably fixed at two sides of the inner cover, respectively. The two hub motors are fixed in the two wheels, respectively. The plurality of sensors is disposed between the bottom cover and the inner cover, respectively.

Abstract: A tri-mode collapsible scooter includes: a deck; a stem; handlebars; a head tube; a neck hinge; a deck hinge; a wheelset; a neck control; and a deck control. The deck includes: a front deck section; a rear deck section; and a deck hinge interposed between the front deck section and the rear deck section. The neck control is configured to release the neck hinge for transition between an open neck position and a closed neck position. The deck control is configured to release the deck hinge for transition of the deck between an open deck position and a closed deck position. The deck hinge occupies the open deck position and the neck hinge occupies the open neck position in a ride mode; and the deck hinge occupies the closed deck position and the neck hinge occupies the closed neck position in a tow mode.

Abstract: An electric vehicle rechargeable via electric power transferred from a power outlet separate from the vehicle includes a seat movable between a first position for supporting a person and a second position. A caddy is positioned below the seat to define a cable storage volume. The cable storage volume is accessible when the seat is in the second position. A charging port is positioned outside of the caddy and accessible with the seat in the first position. A charging cable is positioned within the caddy, the charging cable having a first end engageable with the charging port of the vehicle and a second end engageable with the power outlet. The first and second ends of the charging cable are removable from the caddy when the seat is in the second position to enable charging the electric vehicle via the charging cable and the charging port.

Abstract: A stem for a bicycle comprises a body (14), an electrical device such as a power storage means (20), and a connecting means (24, 26). The body (14) has first and second apertures therein. The electrical device is located within the body. The connecting means enables electrical connection through the at least one first aperture, to enable supply of power to the device. The second aperture enables insertion of the device into the body and removal therefrom. A handlebar can be attached to the stem over the second aperture.

Abstract: A rear brake assembly of a kick scooter includes a brake including an attaching member having an open end; and a visual warning device being a module and fastened in the attaching member by snapping. Also, the fastening of the visual warning device in the attaching member is done manually.

Abstract: A bicycle operating device comprises a base member, an operating member, a hydraulic unit, an electrical switch, a wireless communicator, and a power supply. The base member includes a first end and a second end opposite to the first end. The operating member is pivotally coupled to the base member about a first pivot axis. At least part of the hydraulic unit is disposed closer to the second end than the first pivot axis when viewed from a first direction parallel to the first pivot axis. The power supply is electrically connected to the wireless communicator to supply electrical power to the wireless communicator. At least one of the wireless communicator and the power supply is at least partly disposed closer to the first end than the first pivot axis when viewed from the first direction.

Abstract: A ride-along vehicle may include a guard that attaches to a bottom portion of a molded plastic body and covers a spring and chain assembly. The guard may also provide an attachment point for the spring through a hole in the guard. The guard may have a narrow portion that covers and helps retain the chain on a sprocket as well as a wider portion that covers the spring. An improved pumper arm and steering mechanism may include a pivot joint that is provided by rods, pins, or bolts attached to opposite sides of the pumper arm. The universal joint between the steering arm and the pumper arm can be aligned with the center of the pivot point to prevent rocking of the steering arm as the pumper arm is actuated.

Abstract: A detachable bicycle pedal and disassembly and assembly method thereof. The detachable bicycle pedal has a connecting shaft sleeve, jacket, pedal spindle and pedal. The pedal spindle is connected to the pedal through a bearing. The connecting shaft sleeve is sleeved on the pedal spindle and connected thereto. The jacket is sleeved on the connecting shaft sleeve and connected thereto. The pedal spindle is inserted into the connecting shaft sleeve and in threaded connection with the pedal. The connecting shaft sleeve bears a small force and is not prone to damage. Axial positioning beads control the axial movement of the pedal spindle so that the pedal spindle is not subjected to force during use and the service life is prolonged. The bicycle pedal can be disassembled and assembled by moving the jacket.

Abstract: A controlling system of an electric scooter includes a case having a mounting room therein; and a circuit board received in the mounting room of the case, and having a recess portion at an edge thereof. A driving shaft of an electric motor has at least a section in the mounting room of the case and received in the recess portion of the circuit board. It may reduce a size of the case.

Abstract: A power assembly of an electric scooter includes a case, in which an electric motor, a driven gear, and a controller are received. The case has a base, and the base is provided with a separating layer to divide a space in the base into a first space and a second space. The electric motor has an output shaft and a driving gear connected to the output shaft. The driving gear is received in the first space of the base. The driven gear is received in the first space of the base and mesh with the driving gear. A gear shaft is connected to the driven gear, and the gear shaft has an end extending out of the case. The controller is provided in the second space of the base and electrically connected to the electric motor.

Abstract: A powerboat comprising a hull, a plurality of dynamically adjustable hydrofoils positioned below the waterline towards the rear of the hull, and a control system, wherein the cross sectional area of the hull below the waterline decreases towards the rear of the hull, and the control system is configured to adjust the hydrofoils in operation of the powerboat to control the running trim of the powerboat. The powerboat can operate efficiently at over a wide range of Froude numbers, in particular both low (displacement mode) speeds and high (planing mode) speeds.

Abstract: A collapsible water vessel has a center hull section, a first plurality of hull extensions longitudinally slidable through an opening at a first end of the center hull section between extended and collapsed positions, and a second plurality of hull extensions longitudinally slidable through an opening at a second end of the center hull section between extended and collapsed positions. When the first plurality of hull extensions are in the extended configuration, adjacent hull extensions thereof form a sealing contact therebetween and an inboard most hull extension thereof forms a sealing contact with the center hull section. And when the second plurality of hull extensions are in the extended configuration, adjacent hull extensions thereof form a sealing contact therebetween and an inboard most hull extension thereof forms a sealing contact with the center hull section.

Abstract: A drain pot includes a body and at least one elongated catch. The body has an inlet and an outlet. The inlet and the outlet are at opposing ends of the body and in fluid communication with each other. The at least one elongated catch extends from and around the body. A portion of the body extends radially outwardly further than the at least one elongated catch.

Abstract: A fuel tank arrangement of a marine vessel is disclosed, having an LNG-fuel tank formed of an inner shell, an outer shell, an insulation therebetween and a tank connection space provided at an end of the LNG-fuel tank, the inner shell having an end part at an end of the inner shell facing the tank connection space. A collar is fastened to the end part of the inner shell and extends conically outwardly from the inner shell. The collar has an outer rim to which an additional shell extending in an axial direction away from the inner shell is fastened, and the additional shell has an end rim opposite the collar to which an end cover of the tank connection space is fastened.

Abstract: A fairlead that is intended to equip a towing device that can be installed on the deck of a ship and includes a winch, a cable passing through the fairlead under the action of the winch, the fairlead comprising: an open-section channel extending in a main direction for guiding the cable, a movable bolt closing a section of the channel, a force sensor that is situated in front of the bolt in one sense of the main direction and is configured to detect an external force, and a trigger configured to open the bolt when a force exerted on the sensor and oriented along the main axis in the sense exceeds a predetermined force, and to close the bolt when this force ceases.

Abstract: A foil for a towed cable includes a body defining at least two conduits. The body has a foil shape having a leading edge and a trailing edge. The foil shape defines a first surface extending between the leading edge and the trailing edge configured to provide lift. The foil shape defines a second surface opposed to the first surface extending between the leading edge and the trailing edge. The foil shape defines first and second lateral sides that extend between respective lateral edges of the first and second surfaces, the leading edge, and the trailing edge. A first conduit is defined within the forward half of the body adjacent to the leading edge, is open to each of the first and second lateral sides, and is configured to receive a cable therethrough. A second conduit may be defined within the body and filled with buoyant material.

Abstract: An attachable watercraft chair. The attachable watercraft chair includes a chair formed by a back member and a seat member that are pivotally connected. The back member has a first end placed distally to the seat member and a second end placed proximally to the seat member. A first pair of brackets are connected to the back member. The first pair of brackets have suction cups mounted on them. Also, a second pair of brackets are connected to the back member. The second pair of brackets have a support bar that spans across the back member. The attachable watercraft chair can be attached and removed from a watercraft.

Abstract: Techniques are disclosed relating to towing source elements and geophysical sensors through a body of water using one or more unmanned tow vessel. In some embodiments, a plurality of unmanned tow vessels are configured to tow one or more signal sources and/or one or more streamers. The plurality of unmanned tow vessels may, in some embodiments, traverse various sail paths along a surface of a body of water in order to acquire geophysical data relating to formations disposed below the bottom of the body of water.

Abstract: Disclosed are devices for attaching a seat to a stand-up paddleboard. The devices generally have an open “C”-shape that is designed and configured to accommodate the side rail of a stand-up paddleboard while maintaining flush contact with at least a portion of the bottom of the stand-up paddleboard. The present disclosure also relates to a system for attaching a seat to a stand-up paddleboard. The system includes the above-described device and a mechanism for connecting the device to a seat disposed on the stand-up paddleboard. The mechanism for connecting the device to a seat can be, for example, a strap or a hook. The connecting device can be varied to accommodate the location on the seat to which the connecting device is attached.

Abstract: A hydro flight jet board comprising of a flexible Y manifold capable of third axis movement, a horizontal rocker arm, pivot hinge and a vertical hinge arm and a thrust unit.

Abstract: It is difficult to move forward/backward a water jet propulsion boat at very low speed through use of right and left operation elements each provided on a handle. In order to move the boat forward/backward at very low speed through a simple operation, under a state in which neutral operations have been carried out, an operation state of an engine is maintained in an idling state, and a movement position of a jet flow adjustment member including a deflector and a reverse bucket is controlled so as to adjust a difference between a “thrust generated by a forward jet flow component” and a “thrust generated by a backward jet flow component” of a jet flow divided into a forward jet flow and a backward jet flow by the jet flow adjustment member, based on an operation on a third operation element provided independently of the right and left operation elements.

Abstract: Disclosed are a self-righting unmanned ship suitable for adverse sea conditions and a self-righting working mode thereof, belonging to the field of unmanned ship equipment and techniques. The unmanned ship comprises a main hull, a self-righting deck, an equipment and pipeline mast, a propeller, a radar, an air inlet and exhaust system, and a main engine system. Through the design of a watertight deck, the hull of the unmanned ship has a self-righting function, avoiding the possibility of the unmanned ship itself turning over, without installing additional self-righting equipment. Meanwhile, the internal structure and the self-righting working mode of the unmanned ship make it possible for the hull to automatically turn off the main engine and the air inlet and exhaust system when the heeling angle of the hull exceeds a certain angle, making the whole ship watertight.

Abstract: The present disclosure provides a sensor system and method of operating the same. The sensor system includes a data collection mast including a base, a support member, a main member, a top plate, a first enclosure, a second enclosure, a first cantilever member, and a second cantilever member. The sensor system further includes a pair of stereoscopic cameras disposed on the main member extending through the second enclosure, a radar system disposed on the top plate, a compass disposed on the second cantilever member, a LIDAR unit disposed on the first cantilever member, and a control unit disposed on the main member within the first enclosure. Each of the pair of stereoscopic cameras, radar system, compass, and LIDAR unit are in electronic communication with the control unit, such that control unit receive the data collected from each sensor.

Abstract: A waler assembly for floating docks and walkways includes an elongate metal extrusion for engaging the side of a series of adjoining float components. The extrusion includes a compartment for conformably receiving an elongate wedge. Connector rods join the extrusion and wedge to the float components. The extrusion carries an elongate strengthening plate that extends across the compartment of the extrusion. Each of the extrusion, wedge and strengthening plate includes a plurality of discrete segments that are aligned end to end. The joints between adjoining segments of the waler assembly are offset to provide improved structural integrity of the waler assembly and the floating dock or walkway.

Abstract: A cruise or race boat sail able to create a straightening effect on the hull that is able to be configured, when used, to take the attitude, with at least a first portion having a first curvature, and at least a second portion having a second curvature, opposed with respect to the first one, where the second portion is the upper portion of the sail and includes at least two superimposed skins that can take different attitudes according to profiles having different curvatures.

Abstract: An elliptical powered watercraft includes a buoyant platform, a paddle wheel, pedals operatively connected to the paddle wheel, and a skeg, a fin, or a rudder operatively connected to a steering device, such as handlebars or a steering wheel. An operator propels the elliptical powered watercraft by balancing on the buoyant platform, generating rotational movement with the pedals to deliver power to the paddle wheel, and steering the elliptical powered watercraft by turning the skeg, the fin, or the rudder with the handlebars or the steering wheel.

Abstract: In one embodiment, a unique (or quasi unique) identifier can be received by an application store, or other on-line store, and the store can create a signed receipt that includes data desired from the unique identifier. This signed receipt is then transmitted to a device that is running the application obtained from the on-line store and the device can verify the receipt by deriving the unique (or quasi-unique) identifier from the signed receipt and comparing the derived identifier with the device identifier stored on the device, or the vendor identifier assigned to the application vendor.