Abstract: A cleaning and whitening system for teeth having an electromagnetic radiation emitting toothbrush and a dentifrice with a photosensitive agent is disclosed. The toothbrush has a cleaning surface, such as bristles. The toothbrush is also adapted to direct electromagnetic radiation toward the cleaning surface. The electromagnetic radiation may be monochromatic or polychromatic. Further, the electromagnetic radiation may be substantially free of ultraviolet radiation. Additionally, the electromagnetic radiation may consist essentially of wavelengths within a range of 300 to 750 nanometers. The photosensitive agent is dispersed throughout the dentifrice. The dentifrice transmits the electromagnetic radiation through a varying thickness disposed over a target surface during use of the system. As a result, a significant portion of the photosensitive agent reacts, resulting in whitening stains, removing and/or disclosing undesired substances, and/or foaming.

Abstract: A firearm laser training system of the present invention includes a target having a plurality of zones, a laser transmitter assembly for projecting a laser beam, a sensing device and a processor. The sensing device scans the target to produce target images to detect laser beam or simulated projectile impact locations. The processor receives impact location information from the sensing device and processes the received information to evaluate user performance and to display evaluation information and an image of the target including indicia corresponding to the detected impact locations.

Abstract: A testing system, particularly directed at contract workers, permits computer-aided instruction and testing at each of a plurality of testing sites. Different tests are created and administered for each of a plurality of work sites, which can be selected by the prospective contract worker. Whether the worker passed a particular site-specific test is stored in a database, which in turn is accessible by the work site management. The system has particular application to safety instruction and testing as mandated by the Occupational Safety and Health Administration.

Abstract: A method is presented for calculating a force to apply to components in a computer simulation to simulate the effect that an extinguishing agent stream (e.g., water or foam from a nozzle) should have on airflow in the vicinity of the stream, thereby affecting the movement of other components of the simulation. The method is designed to work in real-time as part of a virtual reality, augmented reality, or other real-time 3-D graphics simulation. In addition to the preferred embodiment of calculating forces to apply to a fire and smoke plume, the invention also contemplates calculation of a force to apply to aerosols and particles that are not part of a fire and smoke plume.

Abstract: An instructional method is provided which includes presenting instructional material, allowing students to discuss the material, and allowing the students to participate in a game related to the material. The instructional material is preferably self-contained. The method may be used by teachers and students without prior preparation. The game preferably includes a rule that each student remains in the game until completion. The instructional method allows children, youth, and adults to learn the instructional material quickly and easily. The instructional material may be on any subject. Preferably, the instructional material relates to the Bible.

Abstract: A therapeutic riding device which treats physical and mental impairments of riders by simulating the motion of a horse in three dimensions. A patient sits on a seat (12) which is mechanically driven by a motor (13) and an arrangement of members having cams (33a, 33b). The three-dimensional pattern made by the seat may be controlled so as to mimic an ideal hippotherapy horse.

Abstract: A book cover for retaining objects is presented including a front panel and back panel hingedly connected to form a book cover. A window extends outward from the front panel in the book cover, forming an enclosure for retaining objects between the cover and a surface proximate to the cover. The window can be clear, displaying the objects held in place thereby, and the book cover may include a closure mechanism to prevent the window from opening and letting the pieces out. The book cover may also be incorporated into an educational activity book comprising a front panel and a back panel connected to form a book cover. Puzzle pieces may be provided in one embodiment for inclusion in the cover of the book in order to assist in teaching children object association and enhancing their coordination.

Abstract: In accordance with the present invention, a controller such as an online service provider computer or an ISP computer receives a survey including survey questions from a client desiring to have a survey conducted. The controller creates respondent questions based on the survey questions. The controller also selects one or more respondents from a list of possible respondents, such as a list of customer accounts. The respondent questions are transmitted to the selected respondents. Responses corresponding to the respondent questions are received. The controller applies an inconsistency test to the responses to generate an inconsistency test result. The inconsistency test determines if the responses originate from computers or humans not paying attention to the questions. Based on the inconsistency test result, a fraud signal may be generated.

Abstract: An electrical terminal is adapted for insertion into a through hole of a circuit board and includes a first section that receives an electrical contact. The first section includes first and second spring arms proximate to each other at a contact point and configured to exert a first spring force to retain the electrical contact. The electrical terminal also includes a second section adapted for insertion into the through hole of the circuit board. The second section includes first and second pin members proximate to each other and defining first and second slots configured to exert a second spring force to retain the electrical terminal in the through hole of the circuit board. The second spring force is exerted in a direction perpendicular to the first spring force.

Abstract: A telecommunication connector for a distribution point comprises a base part and a detachable configuration module, the configuration module being able to take a plurality of dispositions with respect to the base part, the base part having connection means to (i) a telecommunications cable from an exchange, (ii) a cable to a further distribution point, and (iii) a cable to a consumer, wherein the configuration module causes electrical connection from the exchange to the further distribution point in a first disposition but not in a second disposition. This permits the installer who is connecting a new consumer to disconnect the unnecessary part of the wire forming the relevant pair when activating the service whilst leaving intact the investment in the network. The configuration module can also contain protective devices for the line, such as three or five pin protection, over current devices and over voltage devices, or other active electronic elements.

Abstract: The problem of locating a bridge rectifier on a printed wiring board and doing so economically is solved and a technical advance achieved by an assembly comprised of a first member mounted directly on the printed wiring board and a second member which connects a bridge rectifier to the first member. The first member has a first set of discrete contacts adapted to be soldered to conductive paths on the printed wiring board and a second set of contacts each coupled to one of the first set of contacts. The first member supports an opening that extends therethrough and is sized to accept a bridge rectifier. The second member supports a third set of contacts which are adapted to engage the second set of contacts and a fourth set of contacts each one of which is electrically coupled to one of the third set of contacts.

Abstract: This invention is a convertible multi-diameter sleeve for optical fiber connectors to allow optical fiber cables with plug ferrules of different internal and external diameters to be pushed into the sleeve and connected with precise core alignment keeping stable conditions. The sleeve has at least one slot extending part way along the length of the sleeve.

Abstract: Two embodiments of a mechanism for splicing a coaxial radio cable to an antenna wire and grounding the braided outer conductor are disclosed. Both embodiments comprise an injection molded plastic box having two longitudinally spaced and independently operable snap lock covers and an insert molded metal grounding bracket which permits the device to be attached to, for example, an automobile body part. Within each box are locations for receiving an end-stripped coaxial cable and at least one end-stripped antenna wire in opposing alignment with the inner conductor of the coaxial cable so as to define a solder splice point. A soldering fork formed on the insert molded portion of the grounding bracket projects through the floor of the box into the interior thereof to serve as a solder point for the braided outer conductor of the coaxial cable.

Abstract: An entertainment robot whose modules such as paws, hind legs and head can be replaced without the power off. Specifically, of the ten pins of the OPEN-R connector 500, the DGND and PWRGND ones are formed longer than the other.

Abstract: A bus bar for electric power distribution, comprising a body made of conducting material, the body having, on at least one side, at least one slot which has a C-shaped cross-section, the back wall of said C-shaped slot comprising two substantially straight portions which form an angle of less than 180° between them.

Abstract: A latch for use in an electrical connector which controls the movement of the circuit board in directions parallel and perpendicular to the path of insertion of the circuit board. The electrical connector has a dielectric housing with an elongated slot which is dimensioned to receive an edge of a circuit card therein. At least one latch receiving recess is positioned proximate an end of the elongated slot. In many applications, a latch receiving recess is provided at either end of the elongated slot. A first wall of the latch receiving recess is provided adjacent the elongated slot. The first wall has angled surfaces provided thereon. A latch is positioned in the respective latch receiving recess and is pivotally retained therein. Each latch has a pair of legs spaced from each other by a board receiving slot. The legs have a respective tapered surface which extends from a front surface of each leg to a respective side surface.

Abstract: In a folding-type electronic apparatus in which first and second base members (81, 83) are connected by a hinge element (11) to be rotatable around a predetermined axis with respect to each other, the hinge element has a receptacle portion for receiving a flexible conductor element (41). An end of the flexible conductor element is connected to a first electric element mounted on the first base member. Another end of the flexible conductor element is connected to a second electric element mounted oh the second base member. The flexible conductor has an intermediate portion located between the ends thereof and received in the receptacle portion of the hinge element.

Abstract: A connector comprises a male-type connector having a male-type housing and a male-type terminal housed therein, and a female-type connector having a female-type housing and a female-type terminal housed therein. A pair of permanent magnets is attached to both sides of the inner surface of the male-type housing so as to sandwich the top end portion of the male-type terminal. Due to the magnetic field of the permanent magnets, the arc is diffracted and extended by Lorentz force. Therefore, melting, melting of the terminal portion and occurrence of an automobile fire owing to discharge are prevented.

Abstract: The present invention provides an electrical and fluid interconnect for providing electrical connection between one or more circuits or electrical devices and a mateable circuit board or substrate, and for providing fluid coupling of a cooling fluid to permit fluid flow in relation to the electrical circuits or devices when mated to the circuit board or substrate. The fluid connector has a valve which in the absence of mating pressure is in a closed or off position. When mated to a fluid connector which is part of or coupled to the latch assembly, the valve is opened to permit fluid to flow.

Abstract: A pivot mechanism is arranged between a first portion and a second portion of an appliance. The pivot mechanism includes a first ring member, a first humpback bridge, a positioning base and a shaft. The first ring member is disposed on the first portion and having a first engaging element on the peripheral surface thereof. The first humpback bridge is disposed on the second portion and has a second engaging element on the top surface thereof, wherein the first humpback bridge is resilient and flexible. The positioning base is coupled with the second portion and has a first positioning hole.

Abstract: An advanced zero-insertion force (ZIF) socket for coupling an electronic package having a plurality of electrical pins onto a printed circuit board (PCB) of a computer system. Such a ZIF socket comprises a base having a plurality of receptacles adapted to receive electrical pins of an electronic package; a top plate slidably mounted on the base, having a plurality of pin insertion apertures adapted to permit insertion of the electrical pins of the electronic package; and a cam mechanism having an integrated lever which is operable for actuation in the same plane as the socket, for sliding the top plate over the base in a first direction to permit insertion of the electrical pins of the electronic package into respective apertures of the base, and for sliding the top plate over the base in a second direction opposite to the first direction to secure an electrical coupling of the electrical pins of the electronic package with the receptacles of the base.

Abstract: An electric coupler includes a socket device for coupling to an electric power source and having a pair of channels formed in a base and having a pair of passages, and a pair of conductors engaged in the channels of the base. A plug device includes a seat having a pair of conduits for receiving two prongs, and a pair of ears detachably engaged into the passages of the socket device for detachably securing the plug device to the socket device. The prongs may be shielded by the plug device and may be prevented from being contacted or touched by the children inadvertently.

Abstract: An electrical connector includes first and second connectors fitted to each other in a first direction. The first connector includes a locking member extending in the first direction and displaceable in a second direction, a lever extending from the locking member in a third direction, a protruding portion protruding from the lever in the second direction, and an unlocking arm extending in the first direction and displaceable in the third direction. The second connector has a locking portion to be engaged with an engaging portion of the locking member in the first direction when the first and the second connectors are fitted to each other. Engagement between the engaging portion and the locking portion is released when the protruding portion is pressed by a cam portion of the unlocking arm to displace the locking member in the second direction through the lever.

Abstract: A bulb socket for retaining, for instance, an automobile wedge-base bulb that is comprised of a glass bulb that encloses a filament and a flat sealing element provided at the bottom of the glass bulb and having a lead wire on its flat surface, the bulb socket including a bulb retention portion and a conducting terminal provided inside the bulb retention portion. The conducting terminal that retains the flat sealing element of the bulb and is in contact the lead wire is formed with an engagement piece that engages with an engagement step formed in the cylindrical bulb retention portion, thus keeping the conducting terminal inside the bulb retention portion; and a window is opened in the bulb retention portion so that the engagement piece of the conducting terminal and the engagement step of the bulb retention portion can be seen through the window.

Abstract: A lamp unit attached to a lamp-attaching window provided in a roof trim for covering a vehicle body panel comprises a lamp functional portion composed of a reflector (31), a switch unit (33) and a bulb, and a design portion that is a cover lens. For each of bus bars (50, 60, 70) of the switch unit (33), there are provided each of round conductor connecting portions (52, 62, 72) according to a FFC (40) having round conductors fixed to the respective bus bars (50, 60, 70), and each of flat conductor connecting portions (55, 65, 75) according to a FFC having flat conductors.

Abstract: The invention relates to an electrical plug connector comprising at least one plug connector housing and at least one insulation displacement contact element that can be plugged into the plug connector housing and comprises a sheet-metal stamping, which element has a contact baseplate, on which, on mutually opposite edges, a first contact plate and a second contact plate are integrally formed in one piece in a manner such that they are bent away in the same direction via a respective bending zone, the contact plates each having an insulation displacement contact device for a conductor wire, and contact-making elements for forming a contact-making device for making releasably pluggable contact with a mating plug contact element being provided on the insulation displacement contact element, in which case at least one contact plate is embodied as a contact arm in which the insulation displacement contact device is accommodated at its bending zone end region and whose free end has at least one element of the cont

Abstract: A high frequency electrical connector that includes an insulation body with contact terminals, a lead wire connected to the contact terminals and a casing enclosing the insulation body and the lead wire. The insulation body at a position close to the contact terminals has a fixing end and the casing is composed of a first lid and a second lid with each of the first and the second lids having an extension part. The extension part can engage with a plastic outer mold and each of the first and the second lids at two opposite lateral sides has an engaging end respectively for engaging with the fixing end. Clearances are formed between the contact terminals without an obstruction therebetween such that the electrical connector can possess excellent property with high frequency.

Abstract: A retention device (1) for separable connection of the present invention includes a first member (10) and a second member (12) engageable with each other. The first member includes a base portion (14) and at least two elastic latches (16) extending from the base portion for inserting into a hole (54, 56) defined in boards (50, 52) to which the retention device is fastened. Each elastic latch has a hook (17) for engaging with bottom face of one of the boards. The base portion of the first member defines an opening (20) in which the second member is received. The second member includes at least two wedge portions (28) which, when the second member is pushed into the opening of the second member, drive the at least two elastic latches to move inwardly, thereby disengaging the hooks of the first member from the boards.

Abstract: An accessory 1 is mounted on a board 2, and a connector main portion 31 is formed by terminals 5 and a connector board 6, and one end portions of the terminals 5 are soldered to the board 2. A first sealing member 7 is provided at the connector main portion 31, and an inner housing 32, corresponding to the connector main portion 31, is formed within a receiving chamber 3e of a casing 3. A connector frontage portion 30a is formed at the casing 3. By mounting the board 2 on the casing 3, the first sealing member 7 is held in intimate contact with the inner housing 32 to seal the connector frontage portion 30a, and also a connector 30 is formed.

Abstract: A connector has a housing (10) with a terminal accommodating portion (11) for receiving terminal fittings (13) and a receptacle (12) that surrounds the terminal accommodating portion (11). A holder (50) is mounted on the terminal accommodating portion (11) from the front and includes a front wall (51) for supporting the terminal fitting (13) at their front limit positions. A retainer (40) is mounted sideways through a retainer insertion hole (33) in the receptacle (12) and into a retainer mount hole (26) in the terminal accommodating portion (11) for locking the terminal fittings (13). The terminal accommodating portion (11) has a holding groove (29) for holding the holder (50). The holding groove (29) is exposed laterally through the retainer mount hole (26) and the retainer insertion hole (33). The holding grooves (29), the retainer mount hole (26) and the retainer insertion hole (33) are molded by the same mold when the housing (10) is molded.

Abstract: A connector (1) includes a body (7) for connecting wires (4) of a quadriaxially twisted cable (2) with contacts (11) of said connector. The connector includes insulating parts (14, 24, 34) for receiving the twisted cable, the untwisted wires and also to allow connecting the untwisted wires with the contacts. The insulating parts include channels arranged such that the characteristic impedance of the cable in the region of the untwisted wires is held at the same level as the characteristic impedance of the twisted wires.

Abstract: A functional connector includes: first, second and third lead frames each including a contact and a terminal integrally contiguous to the contact; a diode chip; a lead chip posed between the first lead frame and the second lead frame to connect opposite poles of the diode chip to the contact of each of the first lead frame and the second lead frame; a resistor chip arranged astride the second lead frame and the third lead frame and connected to the contact of each of the second lead frame and the third lead frame; and resin covering the first lead frame and the third lead frame each excluding the contact, the diode chip and the resistor chip, with the first lead frame and the third lead frame each having the terminal protruding externally.

Abstract: A plug has a plug casing, an inner tube received in the plug casing and having two recesses oppositely defined in a top of the inner tube to receive therein a first blade and a second blade, a fuse tube having therein a spring, a fuse retainer with legs extending out therefrom and a fuse. The spring abuts the fuse retainer and the legs securely clamp the fuse. A fuse engaging ring is connected to the fuse tube. A connecting ring is engaged with the inner tube to electrically connect to the first connecting leg of the fuse engaging ring. After the connection of the connecting ring to the inner tube which has the fuse tube, the spring, the fuse retainer and the fuse therein, the fuse electrically connects to the fuse engaging ring and therefore the connecting ring.

Abstract: A contact capable of achieving the reduction of height in the direction of displacement, and of obtaining excellent contact pressure. A contact 10 comprises substantially a belt-like elastic contact member 20 having a terminal 21 at one end and a contact part 27 at the other end and substantially a belt-like elastic protection member 30 having a fixing part 31 at one end and a protecting part 37 at the other end and an accommodation hole 33 provided in the protection member 30 between the fixing part 31 and the protecting part 37, wherein the elastic contact member 20 is spaced from and disposed in parallel with the protection member 30 at a given interval while a tip end 29 of the contact part 27 of the elastic contact member 20 is positioned inside and in parallel with the protecting part 37. The accommodation hole 33 is formed such that a part of the elastic contact member 20 enters accommodation hole 33 as the elastic contact member 20 is elastically deformed.

Abstract: The configuration makes electrical contact with an electric valve, in particular a shift or pressure regulating valve for automatic transmissions of motor vehicles. The configuration is equipped with a contact spring element arranged outside a valve housing of the electric valve. In the assembled state, the contact spring element acts on an exposed opposing contact element of a wiring element under spring pressure. For this purpose, the contact spring element has a pressing section with a rounded bearing surface and the mutual contact surfaces on the spring element and on the wiring element are tinned.

Abstract: A plug connector (1) includes a housing (4), an audio plug (2) retained to the housing and a number of terminals (6) received in the housing. The housing has a base (41). A spacer (44) extends rearwardly from a rear face (411) of the base and having a projection (443). The audio plug includes a first and a second contacts (22, 23) insulated by an insulator (25) and each having a contact portion (220, 230), an extension portion (221, 231) extending from the contact portion and a rear portion (222, 232) extending from the extension portion. A part of the rear portion of the first contact is exposed on one side of the insulator and a part of the rear portion of the second contact is exposed on another side opposite to the first side.

Abstract: An electrical connector system including first and second electrical connectors removably attached to one another. Each connector includes a first end having a plurality of apertures with internally directed side walls for securely receiving electrical wires. A second end of the first electrical connector is defined by electrically conductive rods having an enlarged and fluted end so as to be compressible. A second end of the second electrical connector includes a plurality of apertures having internally directed and electrically conductive side walls configured to accept a corresponding rod of the first electrical connector, and compress the fluted end to secure the rod therein, establishing electrical conductivity between the electrical wires.

Abstract: Motorized weed-trimming device can contain a screw or water-wheel attachment. The screw-adaptation part may be in the form of a grain auger, post-hole digger, drill bit, water-screw, for example, a propeller, and so forth and the like, and the water-wheel may be in the form of a side wheel type paddle water-wheel and so forth and the like. Inboard or outboard styles may be employed for or in combination with watercraft. Preferably, the attachment terminates with the propeller so as to form an outboard motor, say, with the weed-trimming device being gasoline-powered.

Abstract: An outboard motor auxiliary fuel tank/fuel pump assembly includes an auxiliary fuel tank disposed in an engine compartment and a fuel pump joined to one side of the auxiliary fuel tank for supplying fuel stored within the auxiliary fuel tank to fuel injection valves of an engine. A float of a float valve provided within the auxiliary fuel tank is supported in the auxiliary fuel tank via a pivot shaft that is parallel to a tilt shaft of an outboard motor. First and second mounting bosses on which the fuel pump can be mounted are formed on the right side face and the front end face of the auxiliary fuel tank.

Abstract: Disclosed is an exhaust structure of a jet-propulsion personal watercraft adapted to eject water pressurized and accelerated by a water jet pump from an outlet port so as to be propelled as the resulting reaction, which is configured to cause an exhaust gas from an engine for driving the water jet pump to be discharged to outside of the watercraft through an exhaust passage constituted by a water muffler, and the like. The exhaust structure is configured to cause the exhaust gas from the engine to flow into a pump room through a hollow portion partially or entirely formed in a pump cover covering a pump room that contains the water jet pump from a bottom side of the watercraft and to be discharged to outside of the watercraft through the pump room. The exhaust structure is advantageously capable of producing a high muffling effect and preventing water ingress into the exhaust passage even when the watercraft is inverted.

Abstract: Disclosed is an exhaust structure of a silent jet-propulsion personal watercraft capable of preventing water ingress into an exhaust system even when the watercraft is inverted. An exhaust structure of the watercraft is configured to cause an exhaust gas from an engine for driving a water jet pump to be discharged outside the watercraft through an exhaust passage, the exhaust passage includes a vertically extending water catcher having a substantially closed space in an upper portion thereof; an upstream exhaust passage having one end connected to an exhaust port of the engine and the other end connected to the water catcher at a position below the closed space; and a downstream exhaust passage having one end connected to the water catcher at a position below the closed space and the other end opened to outside of the watercraft.

Abstract: A buoy which is suitable for supporting various sizes of beverage containers and allows the center of gravity of the combined buoy and container to be readily adjusted in order to restrain tipping.

Abstract: Supplying pellets without the risk of enlarging the apparatus size or moisture absorption of the pellets by disposing a rotation drum provided with a pellet storage room in a sealed case with an inert gas supply. The apparatus according to the present invention has a main body case with a rotation drum storage part formed therein, a lid mounted on the front surface opening part of the main body case, a rotation drum disposed rotatably in the rotation drum storage part, and a pellet supply nozzle elongating from the main body. Through holes having a size capable of inserting a pellet are provided on the circumferential wall of the rotation drum with an equal interval in the circumferential direction as well as the side wall of the main body case to be contacted slidably with the circumferential wall of the rotation drum.

Abstract: A method for filming a carbon nanotube film comprising the steps of preparing a solution having a solvent into which a coarse carbon nanotube is dispersed, evaporating the solvent, disposing a substrate in the solution, the substrate having an exposed portion patterned into a predetermined shape, and depositing a carbon nanotube on the exposed portion of the substrate.

Abstract: A method of forming a polyimide-isolating wall including the steps of: a coating process for coating a photosensitive-polyimide isolating wall on an organic electroluminescent display panel; a prebaking process; an exposure process; a post-exposure baking process; a developing process for shaping the polyimide-isolating wall as a reverse-trapezoid cross section; and a curing process for making the polyimide-isolating wall possess electric, thermal and mechanical stability.

Abstract: A method of manufacturing a carbon nanotube field emitter for field emission displays by electrophoresis is disclosed. The method of manufacturing involves: first, loading an electrode plate and the field emitter substrate, which are spaced apart from one another, into an electrophoresis bath containing a carbon nanotube suspension for the electrophoresis; second, applying a predetermined bias voltage from a power supply between the electrode plate and the cathodes of the field emitter substrate to deposit, at room temperature, carbon nanotube particles on the surface of the electrodes exposed through the holes of the dielectric film; and third, drawing the field emitter substrate, on which the carbon nanotube particles have been deposited, out of the electrophoresis bath, and heating the field emitter substrate with carbon nanotube tips at a predetermined temperature. An efficient low-temperature process, incorporating low cost carbon nanotube particles, provides for a lower manufacturing cost.

Abstract: A bubble generating assembly has a housing with a wiping bar secured to a permanent location extending across a portion of the front opening of the housing. The bubble generating assembly further includes a container coupled to the housing and retaining bubble solution, a trigger mechanism, a bubble generating ring positioned adjacent the front opening, a tubing that couples the interior of the container with the ring, and a link assembly that couples the trigger mechanism and the ring in a manner in which actuation of the trigger mechanism causes the ring to be moved from a first position to a second position across the wiping bar.

Abstract: Square and octagonal building elements for a set of toy building elements that are capable of being inteconnected in a releasable engagement both side-to-side and top-to-bottom. The side walls of the building elements include a groove and/or a split flexible tongue that is compressed when frontally forced into a groove in another such building element to effect a releasable restraining frictional engagement within the groove.

Abstract: A toy building set comprising building elements with at least two side walls that define a width for the building elements and a top face with coupling studs arranged in parallel rows on the top face such that the rows are spaced apart. The building elements have a bottom with a cavity for receiving coupling studs on other building elements. The toy building set comprises a toy vehicle with wheels that are mounted in pairs on opposed sides of the vehicle. The wheels in each pair are arranged at such distance from each other that there is room for an integer multiple of rows of coupling studs between the wheels, and that both wheels in a pair can simultaneously be in rolling contact with a top side of the building element.

Abstract: The present invention is a trim adjustment mechanism to balance a toy vehicle. One vehicle has a platform supporting two wheels in line along a central longitudinal vertical plane through the platform. The trim adjustment mechanism has a weight holder slideably supported by the platform to move transversely to the central vertical plane. A weight member is engaged with the weight holder for slideable movement with the weight holder. An adjustment lever has a first end operably coupled with the weight holder. The adjustment lever is pivotable about the first end such that rotation of the adjustment lever causes sliding side-to-side movement of the weight member, whereby a user can effectuate side-to-side movement of the weight member within the vehicle with the adjustment lever in order to balance the vehicle and enhance the stability of the vehicle.