Abstract: An indicator circuit for an emergency light, including: a charging circuit, in connection with a positive terminal of a lithium battery and configured to charge the lithium battery; a battery protection circuit, in connection with a negative terminal of the lithium battery and configured to provide protection against overvoltage and overcurrent of an electrical signal output by the lithium battery; a main control circuit, in connection with the negative terminal of the lithium battery and configured to compare the electrical signal output by the lithium battery with a reference voltage signal and output a control signal; and a drive circuit, in connection with the main control circuit and an indicator light, and configured to drive the indicator light to illuminate according to the control signal and turn off the indicator light in case of abnormal conditions.

Abstract: The present disclosure discloses a transparent lampshade used for solar lamp, comprising a transparent lampshade body, an upper side of the lampshade body is provided with an installing recess for installing a solar luminous lamp assembly, and an upper light-transmitting portion located on a circumference of the installing recess and capable of exposing the solar luminous lamp assembly and transmitting light upwardly. Through cooperation of the installing recess and the upper light-transmitting portion in the disclosure, not only the installation of the solar luminous lamp assembly but also the use effect of light transmission on the upper side can be realized, and the outstanding effect close to the full-lighting even can be achieved, thus to maximally improve lighting effect of the whole solar lamp and bring people a more impressive visual impact, thereby greatly meeting more practical needs and facilitating further innovation and development of industry.

Abstract: Lighting devices and sets comprising multiple lighting devices are described. The lighting device may include a housing, at least one light source such as a light-emitting diode (LED), a rechargeable battery, optionally a microprocessor, and at least one solar panel. The lighting device may include a mount configured to secure the lighting device to a support, such as a frame or other portion of a vehicle or other device. The set of lighting devices may include first and second lighting devices, each including a light source, optionally wherein the light sources may emit different colors of light.

Abstract: Devices and methods for a sealed electrical connector are described herein. Some embodiments include a spring connecting a first PCB to a second PCB, wherein the spring includes a first end portion in contact with the first PCB, a second end portion in contact with the second PCB, and a middle portion extending between the first end portion and the second end portion, a spacer surrounding the middle portion of the spring, a first seal seated in a first groove of the spacer and in contact with the first PCB, and a second seal seated in a second groove of the spacer and in contact with the second PCB.

Abstract: An attachable lighting apparatus is presented for readily repositioning said lighting apparatus as attached to a viewing surface without detachment. The apparatus comprises a light housing section that adjusts to face a top surface of a viewing object, a side section attached to the light housing section that faces a side surface of the viewing object, a bottom section attached to the side section that faces a bottom surface of the viewing object, and a first roller device positioned about a mounting element, a portion of said first roller device protruding through an aperture within the light housing section, wherein a switch is triggered to activate one or more lighting elements of the light housing section when the light housing section faces the top surface of the viewing object.

Abstract: A modular system may include a plurality of magnets that may be provided to self-align a casing with an accessory. Self-alignment of the casing and the accessory may provide a secure connection of the casing with the accessory. At least one detent and at least one locking arm may mate and lock the casing against the accessory in a mounted position. The at least one detent and the at least one locking arm may unlock in an insertion position. Self-alignment may occur when a first set of magnets attracts a second set of magnets in which opposite polarities attract and automatically initiate movement of the casing towards the accessory.

Abstract: A free-standing accessory stand that includes a ground support portion and an enclosure is provided. The enclosure is disposed about a central axis of the accessory stand. The upper surface faces away from the ground support. The accessory stand includes a retractable accessory support that has an outer surface projecting away from the enclosure in a first configuration. A mounting space is provided along the outer surface of the retractable accessory support above the upper surface of the enclosure. The outer surface is retracted in a second configuration.

Abstract: The disclosed technology provides for a device and method related to powering an electronic stylus with a removable, integrated battery that acts as a structural segment and external casing along the long axis of the stylus body. The integrated battery incorporates interlocking features, which removes the need for an external tube around a battery cell. As a result, the electronic stylus has one structural component performing multiple functions (e.g., providing power, functioning as the stylus casing), which achieves a more lightweight and compact electronic stylus. The placement of the battery along the long axis can vary to provide comfortable weight distribution for writing, which can involve an interlocking interface at one end of the battery or at both ends of the battery (e.g., to interlock with one or both ends of the electronic stylus).

Abstract: A solar powered illumination device, including a bulb to illuminate in at least one color, a base unit removably connected to the bulb to receive the bulb therein, a solar cell circumferentially disposed around at least a portion of the base unit to generate power in response to receiving an external light source and send the power to the bulb, and a connector unit, including a connector body removably connected between the bulb and the base unit, and a photodiode disposed on at least a portion of the connector body to generate power for the bulb in response to receiving the external light source thereon.

Abstract: The present invention provides an outdoor lighting lamp comprising a ground inserted base including an assembly opening and a ground nail, and a lighting module including a first shell, a light projection gap, a light emitting component, and a solar panel connected with the light emitting component. The light generated by electrifying the light emitting component is only projected by the light projection gap. One end of the first shell is mounted at the assembly opening, and the first shell is forced to rotate relative to the ground inserted base based on an axis of the ground nail to be a rotation axis. The solar panel is arranged at one end of the first shell where is in an opposite direction of the ground inserted base and not in horizontal. The solar panel adjusts a light receiving position by rotating the first shell relative to the ground inserted base.

Abstract: A tent center hub, having a frame that hinges with top rods of the tent, also containing a top seat wherein a solar energy conversion and storage mechanism is mounted; a bottom side of the top seat is provided with an annular press ring protruded away from the top seat; a top side of the frame is provided with an annular block ring protruded away from the frame; the top seat is removably connected to the top side of the frame; a cavity inside the top seat and a cavity inside the frame are in mutual communication with each other; the block ring is disposed within an enclosure of the press ring; a gap exists along a longitudinal direction between a bottom side of the press ring and the frame. The tent center hub can provide lighting inside the tent.

Abstract: A security light having optional connection to multiple power supplies. The lighting controller can sense the appropriate connected supply and automatically connect to three different power supplies which include house voltage connection through a typical junction box, a remote solar charging station, and on-board batteries that can be used as a third backup power supply. Additional implementations include power outage detection and backup illumination along with low voltage power supply from a mounting structure.

Abstract: Light emitting diode (LED) light tubes having rotatable end cap assemblies are described. The LED light tubes include a hollow tube and a circuit board with LED chips thereon. The end cap assemblies are provided on either end of the tube. Each end cap assembly includes a socket cap, a plug having a plug body and at least one connector, and an end cap body, one end of which engages one of the ends of the hollow tube. A cam locking mount that is positioned within the plug body and on the opposite side has projections to be positioned in the bore of the end cap body. A rotation cam is seated in the cam locking mount and provides for controlled rotation of the LED tube relative to the end caps. Methods of installing the LED light tubes in new installations and retrofit installations and for use in sign assemblies are also described.

Abstract: The invention discloses a solar lamp, including a base, a light source, a power unit, a lampshade, and a solar panel, wherein the lampshade is buckled on the base to form an accommodating space; the light source, the power unit, and the solar panel are all disposed in the accommodating space; the power unit is electrically connected to the solar panel and the light source; and the lampshade is made of a light-permeable material, wherein a plurality of light guide elements for guiding light are disposed on an outer side the lampshade.

Abstract: A solar street lamp includes a connecting base configured with a mounting port for mounting the solar street lamp on top of a lamp post. A bottom plate has a rear portion mounted on top of the connecting base, the bottom plate has a lower surface upon which is mounted, in a forward portion of the bottom plate, a plurality of light-emitting modules. A solar panel is supported above the bottom plate and separated from the bottom plate by a distance of a wiring gap space, as meaning approximately a minimal gap needed to permit wiring for interconnections of components on the solar street lamp. A battery stores energy received from the solar panel, and a power supply provides power from the battery to the light-emitting modules. The battery and power supply are mounted below the bottom plate, inside a mounting chamber formed in the connecting base.

Abstract: An infrastructure energy generation system comprising plurality of photovoltaic structures installed along a road or transportation route to generate electricity from solar energy. An electricity transmission line is installed along said road or transportation route which is connected to vehicle charging facilities, electric trains, electric buses, electric trucks, transportation facilities and roadside lights. The electricity transmission line is connected to at least one electricity generation source such as a generator or an electric battery. The infrastructure energy generation system is configured as a Distributed Energy Resource (DER), a microgrid, a grid-tied electrical system or an off-grid electrical system.

Abstract: A light fixture and a lighting system including the light fixture is disclosed. The light fixture can include a first light emitting diode (LED) on a printed circuit board (PCB) sized and configured to receive direct current power directly from a photovoltaic (PV) panel and sized to accommodate a maximum voltage output from the PV panel. The lighting system can include the PV panel and the light fixture with the first light emitting diode (LED) on the PCB.

Abstract: Rechargeable battery for a machine tool containing at least one energy storage cell and also one switching apparatus. The rechargeable battery contains a bypass circuit which can be operated in a first and second mode, wherein the bypass circuit is in an inoperative state in the first mode, so that an electric current with a first current value passes from the at least one energy storage cell to the machine tool via the switching apparatus, and wherein the bypass circuit is in an operating state in the second mode, so that an electric current with a second current value passes from the at least one energy storage cell to the machine tool via the bypass apparatus, and wherein the first current value is greater than the second current value.

Abstract: A lighting device includes a body, a lighting module, and a cap. The body includes a cavity, the cavity including an aperture. The lighting module is in the cavity and include a push button switch. The cap covers the aperture and include an outward side and an aperture side having a protrusion. The protrusion and push buttons switch are positioned such that they are proximate and when the cap is pushed inward near the protrusion, the protrusion pushes the push button switch and activates the lighting module. The cap includes a ridge surrounding the protrusion on the outward side, the ridge preventing the protrusion from being pushed into the push button switch, unless the cap is pressed at approximately a location of the protrusion.

Abstract: A portable lamp assembly includes a spine member, a first and second side panel rotatably connected to the spine member, and a pair of first and second tangent links prismatically and rotatably operably coupled to the first and second side panel. Each of the tangent links has a plurality of vertical adjustment positions disposed between an upper and lower portion. The spine member and the first and second side panels have at least one source of light connected thereto. The first side panel and the second side panel can be rotated between an open position to allow the sources of light emit light towards a target area and a closed position for storage of the portable lamp assembly. The portable lamp assembly is free standing in the open position to allow the portable lamp assembly to be used without any external support.

Abstract: An outdoor solar ground light includes a primary light board and a plurality of secondary light boards installed in the outdoor solar ground light and electrically connected with each other without requiring the use of a conductive wire, and capable of emitting light around the top and the sides of the ground light simultaneously, and the ground light adopts a light emitting diode such as a white/warm white LED or a RGB LED provided for users to select their favorite color or change the color cyclically. Unlike the commercial available ground light, the present invention has the advantages of simple assembling, easy use, convenient transportation and packaging, and aesthetic merchandise appearance.

Abstract: There is provided an elevated light fixture that includes a frangible coupling designed to secure the fixture to the ground, a housing designed to be affixed to the frangible coupling and house and/or support additional features of the light fixture, a cap to lock the globe atop the housing by engaging a component of the housing or a support component that is affixed to the housing, lighting components designed to emit light such as an LED as well as a lens designed to sit atop the housing when assembled that is transparent or translucent to allow light from the lighting components to pass through, electronic components designed to deliver electricity to the lighting components such as a circuit card and a power cord, and support components that support the lighting and/or electrical components such as a parts retainer flange.

Abstract: A lighting system includes a light fixture assembly having a lower housing portion enclosing LED light circuitry, a rechargeable battery, a wireless communications module, and a system controller, and an upper housing portion enclosing a wireless charging receiver, a communication antenna, and a first set of magnets. A wireless charging assembly includes a wireless charging transmitter connected to a power source and a second set of magnets configured to releasably adhere to the first set of magnets to hold the charger housing against the fixture housing for charging. A wireless remote control application is used to control the lights within the fixture.

Abstract: The invention relates to an electrical mobile event lamp. The object of the invention is to design a mobile electrical event lamp for hiring for events, such that same can be used alternatively for permanently wired and battery-powered operation. According to the invention, this is achieved by integrated rechargeable batteries for power supply and a connection for a wiring of the lamp provided for an alternative power supply, as well as a blocking function implemented in the electronic controller of the lamp for access to the integrated battery implemented in the electronic controller of the lamp, and a data connection for activating or deactivating the blocking function by means of an external data synchronization.

Abstract: A display device including light emitting modules having signal lines and common lines arranged thereon, each including light emitting diodes mounted on an upper surface thereof and electrically connected to the signal lines and the common lines, respectively, a motherboard coupled to the light emitting modules, and a bonding layer having electrical conductivity and coupling the light emitting modules to the motherboard, in which each of the light emitting modules includes signal line terminals and common line terminals disposed on a lower surface thereof and electrically connected to the signal lines and the multiple common lines, respectively, and the motherboard includes board signal line terminals and board common line terminals disposed on an upper surface thereof at locations corresponding to the signal line terminals and the common line terminals of the light emitting modules.

Abstract: The present disclosure provides a light source switching module, a light source assembly and a lighting lamp. The light source switching module includes: a switching portion, being provided with an installation portion for installing a light source module; a mechanical connection portion, being fixed on the switching portion and being mechanically connected with a base; and an electrical connection portion, being electrically connected with a power supply connection terminal in the base and being electrically connected with the light source module.

Abstract: Aspects of the disclosure are directed to a multi-functional streetlight. In accordance with one aspect, the multi-functional streetlight includes a hexagonal shaped support structure, wherein the hexagonal shaped support structure includes an arm segment and wherein the arm segment includes a luminaire on an under side of the arm segment; and a base flange configured to couple the hexagonal shaped support structure to the ground.

Abstract: The present invention discloses a displayer screen hanging lamp, comprising a lamp body and a fixed bracket, wherein the lamp body comprises a lamp housing, a lens and a light source; the fixed bracket comprises an regulating frame, a support clamping mechanism and two clamping legs; the lamp body is connected and fixed with the regulating frame which is installed onto the support clamping mechanism, the forepart of the bottom of the support clamping mechanism is equipped with two clamping feet extending downward; the whole fixed bracket is clamped onto the displayer via the clamping feet and the clamping legs; the clamping feet clamp the front surface of the top of displayer and the clamping legs are rotated to change the clamping angle to clamp the back of displayer.

Abstract: The invention relates to a charging station with a charging contact device (20) and an accumulator-operated flashlight (10) with charging contacts (14, 15), arranged transverse to the flashlight longitudinal axis and insulated with respect to one another, on the flashlight housing casing, which, when the accumulators are being recharged, bear electrically conductively against charging contact points (28, 29) of the charging contact device (20).

Abstract: A lamp base assembly and a lamp. The lamp base assembly includes: a base body, the light emitting module being provided on a surface of the base body; and supporting feet, the supporting feet being movably provided on a surface of the base body away from the light emitting module; the supporting feet are configured to move relative to the base body and protrude from a periphery of the base body when the lamp base assembly is in an unfolded state, and the supporting feet are configured to move relative to the base body and close to each other when the lamp base assembly is in a folded state.

Abstract: In one aspect of the disclosure a communications network or topology is presented that includes one or more modular or adaptable smart pole assemblies. Each smart pole assembly can include a pole structure supporting a data-communications module and having a hollow interior through which a connectorized vertical cabling structure extends. Jumper cables can be provided to connect components associated with the data-communications module with the vertical cabling structure such that no cabling or wiring has to be removed or installed from the pole hollow interior when components are added, removed, or replaced. The vertical cabling structure or harness can include one or more of connectorized fiber optic cables, DC power cables, and connectorized Category 6 cables. In one example, the fiber optic cables are terminated with hardened multi-fiber optical connectors at each end.

Abstract: An area light includes a housing defining a central axis. A lens is coupled to a first end of the housing and a light assembly is disposed within the lens. The light assembly includes one or more LEDs. A battery is selectively coupled to a battery port and arranged to provide power to the LEDs. A hook is coupled to a second end of the housing. A slot on the second end of the housing is configured to receive a support member that is configured to support the light. A user interface includes a first control member configured to turn the one or more LEDs on and off, and a second control member configured to switch the intensity of the one or more LEDs. A control unit controls power to the one or more LEDs. The light passing through the lens has a range of between 3500 and 5500 lumens.

Abstract: A modular device includes a light housing configured to receive a light source thereon, and a central housing, decoratively patterned and configured to be connected to the light housing such that, in a state of the connection of the light housing with the received light source to the central housing, the light source is also received through the central housing and encompassed by the central housing with the decorative patterning thereon. The central housing is configured to be capable of being connected to each of a handle element and a base element such that the modular device is capable of being used as a torch when the handle element is connected to the central housing, and the modular device is capable of being used as a lantern when the base element is connected to the central housing.

Abstract: A lighting apparatus is provided with a housing that includes a rear mounting platform and a partitioning wall extending from the rear mounting platform to form a first cavity and a second cavity within the housing. The lighting apparatus includes a light module mounted on the housing to seal the first cavity, where the light module includes a heat sink located at least partially within the first cavity and at least one LED supported by the heat sink. A battery receptacle is formed within the second cavity, where the battery receptacle is arranged to receive a removable battery pack through a lower open end of the second cavity in a direction parallel to a plane of the rear mounting platform.

Abstract: A network is disclosed of a plurality of outdoor lighting units. Each lighting unit comprises a light fixture, for example a LED lamp; a power generating means, such as a solar panel or a wind turbine; and a storage means for electric energy, for example a battery. The energy storage means of neighboring lighting units are connected by a conductor. An imbalance in power generation or power consumption results in a balancing current through the conductor. The balancing current equalizes the charge levels of the energy storage means in the system. In an embodiment the conductor comprises a single core wire and ground.

Abstract: A solar light assembly is configured for illuminating a corrugated sign. The assembly comprises a solar panel, a battery, and a printed circuit board electrically connected to the battery and to the solar panel. An LED light is disposed on the printed circuit board, which is curved to direct the light onto a printed surface of the sign. A sign attachment component attaches the assembly to the corrugated sign. The sign attachment component may be one or more spears configured to be inserted into flutes of the corrugated sign.

Abstract: A solar powered security light is provided which includes a universal mounting bracket. The security light has a mounting recess which receives the mounting bracket and allows the luminaire to be variably installed in an eave, wall, and gutter or pole mount position. The solar charging station includes associated charging circuits to charge storage devices such that the security light does not need directly line voltage connection. Further the charging station may be placed remote from the luminaire housing and include required electronics thereby reducing the footprint of the luminaire housing and increasing the installation locations.

Abstract: An apparatus to provide a source of light includes a lighted mirror. The lighted mirror is configured for installation within a building. A single electrical power circuit provides a source of electrical power to the lighted mirror from the building. The single electrical power circuit is either in an ON state or an OFF state. The lighted mirror includes a nightlight system. The nightlight system includes a battery. The battery is electrically connected to charge when the single electrical circuit is in the ON state. The nightlight system includes a first sensor. The first sensor is configured to receive electrical power from the battery and to measure a first value for a first parameter from an area proximate to the lighted mirror. The nightlight system includes a nightlight. The nightlight is electrically connected to receive electrical power from the battery. The nightlight system has an ON state and an OFF state and control logic.

Abstract: A modular system may include a plurality of magnets that may be provided to self-align a casing with an accessory. Self-alignment of the casing and the accessory may provide a secure connection of the casing with the accessory. At least one detent and at least one locking arm may mate and lock the casing against the accessory in a mounted position. The at least one detent and the at least one locking arm may unlock in an insertion position. Self-alignment may occur when a first set of magnets attracts a second set of magnets in which opposite polarities attract and automatically initiate movement of the casing towards the accessory.

Abstract: A luminaire has a light source carrier around a central light output window, with light sources facing a first, at least partially upward, direction. An upper reflector cover reflects light to a range of light output directions, at least partially downwardly, through the central window opening. A lens structure is formed over the set of light sources having a light diffusing output area and reflecting side walls extending between the light sources and the light diffusing output area. This design enables the luminaire to be very slim. The design may also avoid the need for a light diffusing output window.

Abstract: Embodiments of the present invention provide an alternate power source through the use of photovoltaic technology that mounts to a bracket that attaches to the tripod underneath the GPS base station. Some embodiments of the present invention include a photovoltaic solar panel battery adapted to provide the GPS base station with a longer operating time window and the ability to conveniently recharge the base station when needed. Additionally, a photovoltaic solar panel battery allows the GPS base station to independently recharge and operate without a traditional external power source.

Abstract: An outdoor solar lamp assembly structure includes a base having a receiving slot, a translucent lamp cover covering on the top and outer periphery of the base, and a solar lighting module installed between the base and the translucent lamp cover, and a waterproof design is provided between the translucent lamp cover and the base, and the solar lighting module has a multiple of LED lamps, a solar panel, and a battery integrated and installed onto both front and back sides of a circuit board with a modular design which is conducive to assembly and maintenance.

Abstract: A display device includes a plurality of islands and a bridge connecting the plurality of islands to each other. Each of the plurality of islands includes a flexible substrate, a thin film transistor positioned on a first surface of the flexible substrate, a first electrode connected to the thin film transistor, and a protective mask positioned on a second surface of the flexible substrate.

Abstract: The device includes a photovoltaic panel, an illumination lamp, a control device and a lamp strap disposed on the photovoltaic panel; the photovoltaic panel is electrically connected to the control device, and when the photovoltaic panel senses light, the photovoltaic panel performs photoelectric conversion and generates a conversion electric signal, so as to output the conversion electric signal to the control device; the control device is electrically connected to the lamp strap, and when the voltage of the conversion electric signal is lower than a preset threshold, the control device generates a driving electric signal, so as to transmit the driving electric signal to the lamp strap; the control device is electrically connected to the illumination lamp, and the control device transmits an illumination signal to the illumination lamp for illumination; the lamp strap receives the driving electric signal, and emits light.

Abstract: A light control system comprises a light control device and a sensor module configured to detect a motion pattern of a user's hand relative to the entranceway and a light control device. The light control device includes a housing, a proximity sensor configured to detect a position of a door in a vicinity of the entranceway, and a light controller disposed in the housing and communicated with the sensor module and the proximity sensor. The light controller is configured to control the light strip in response to a detected position of the door by the proximity sensor; and control the light strip in response to the motion pattern detected by the sensor module when the door is not detected at a preset opening position or no door is present at the entranceway.

Abstract: An optoelectronic component includes a light emitter including a multiplicity of image points configured to emit light, and an optical element configured to guide light emitted by the light emitter into a target region, wherein a lower side facing toward the light emitter of the optical element is subdivided into four quadrants, each quadrant includes a Fresnel structure having a multiplicity of ridges extending along concentric annular arcs, the ridges of the Fresnel structure in each quadrant are respectively curved around a center shifted relative to a midpoint of the lower side of the optical element, and the center in each quadrant is arranged at a corner of the lower side of the optical element.

Abstract: Systems and methods include receiving a desired light color temperature-time function. A first drive signal parameter is selected for a first light source having a first color temperature and a second drive signal parameter is selected for a second light source having a second color temperature. The drive signal parameters are selected to create a color temperature for a value of the desired light color temperature-time function. First light is emitted from the first light source and second light from the second light source. The first light and the second light combine to form blended light at the color temperature for the value from the desired light color temperature-time function.

Abstract: A flashlight and acoustics assembly includes a mounting seat, an outer shell mounted on the mounting seat, a housing mounted in the outer shell, a lighting unit mounted on an outside of the housing, a rechargeable battery mounted in the housing, a sound device mounted in the housing, a magnet mounted in the housing, and a connecting unit mounted in the housing. The lighting unit and the sound device are electrically connected with the rechargeable battery. The connecting unit includes a connecting board locked on the housing, and a connecting rod connected with the connecting board. Thus, the housing is mounted in the outer shell steadily by magnetism of the magnet.

Abstract: A split-type car cigarette lighter includes a cigarette lighting device and a car charging device movably connected to the cigarette lighting device. The cigarette lighting device includes a first housing formed a first receiving room therein for receiving a first PCB and a battery therein, and a heating plate electrically connected to the first PCB. The battery is tightly fixed with the first housing and electrically connected to the first PCB. Both the heating plate and the first PCB are tightly fixed with the first housing. the heating plate is electrically connected to the at least one electrical contact when the cigarette lighting device is partially received in the first mounting recess and movably connected to the second housing.

Abstract: A tiltable solar disk light has a solar light disk body comprising a disk-shaped housing which houses solar cells, LEDs, a rechargeable battery, a pushbutton switch, and driver electronics configured to deliver power to the LEDs from the battery when the switch is in the ON position and the solar cells are not detecting ambient light and to cut off power to the LEDs when the switch is in the OFF position or the solar cells are detecting ambient light. The disk body is tiltably and rotatably supported in a frame, on a pair of pegs extending from the housing, with enough clearance space about the disk body to permit tilting and rotating within the frame. A landscape spike is optionally connected to the frame by curved arms configured to define a clearance gap between the spike and the frame to permit the disk body to tilt within the frame about the axis of rotation formed by the pegs.