Abstract: The article of invention is a unique set of playing cards derived from a combination of features derived from traditional playing cards and domino set. This provides for new possible games to be developed.

Abstract: In a set of playing cards for a playing a wagering game, each card bears on a playing face a letter of the alphabet and a numerical score value associated with said letter of the alphabet. The set is divided into twenty-six series of cards, each series representing a different letter of the alphabet from A to Z, and each series including one or more cards. Example cards 10, 12, 14 are shown in FIG. 1. A playing surface for the game is shown in FIG. 2.

Abstract: A gaming method and system which allows a player to wager varying amounts on whether that player will have multiple consecutive wins, losses, or ties of a game of chance and having the option of withdrawing from a consecutive wins, loss or tie bet before reaching the number of consecutive wins, losses or ties originally selected and select a reduced payoff or to make a consecutive wins, losses or ties bet without selecting a predetermined number of consecutive wins, losses or ties and which provides a simplified arrangement for monitoring the progress of such bets made by one or more players, as well as providing a multiple outcome bet tracking system and mark matching system to protect against bet tampering.

Abstract: A piece for a domino game having a first connecting end and a second connecting end designed to assemble with the connecting ends of other similar pieces, the first connecting end and the second connecting end being at a positive angle ? from one another, a marking face divided in two parts, and an external face linking the external edges of connecting ends. The geometrical shape of the piece is such that, whenever several pieces are assembled one after the other so that the first connecting end of a piece assembles with the second connecting end of another piece, and so on until the free connecting ends are at an angle ?? which value is superior or equal to that of angle ?, and inferior to twice the value of angle ?, it is possible to assemble, in a direction opposite to the others, two other pieces with their connecting ends linked to free connecting ends without having these two aforementioned other pieces overlap.

Abstract: A gaming method and system which allows a player to wager varying amounts on whether that player will have multiple consecutive wins, losses, or ties of a game of chance and having the option of withdrawing from a consecutive wins, loss or tie bet before reaching the number of consecutive wins, losses or ties originally selected and select a reduced payoff or to make a consecutive wins, losses or ties bet without selecting a predetermined number of consecutive wins, losses or ties and which provides a simplified arrangement for monitoring the progress of such bets made by one or more players, as well as providing a multiple outcome bet tracking system and mark matching system to protect against bet tampering.

Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).

Abstract: An alignment apparatus includes a first stator, located in a stator of a piece of rotating equipment, and a second stator couplingly connected to the first stator and able to be angularly rotated relative to the first stator. The second stator can seal an interface between a shaft and housing in the piece of rotating equipment. The alignment apparatus permits angular misalignment between a stator, a housing and a rotor shaft, and may be used, for example, in a bearing protector or an isolator installed on a Pillow Box.

Abstract: A seal and coupling, wherein the seal has a thin profile including a primary sealing element that provides both a face and radial seal, and a secondary or backup sealing element that provides a face seal. The secondary or backup sealing element seals against leakage past or through the primary sealing element, and the retainer may be made of a fluid impervious material for blocking permeation of fluid from the primary to the secondary seal. The retainer may also function to prevent over-compression of the sealing elements, while also maintaining a radial spacing between the sealing elements.

Abstract: A gas seal assembly includes a pair of mutually rotatable sealing members, each of which has a front face adjacent a gap between the two members which constitutes a leakage path through the seal assembly. The two sealing member are urged, in use, in a direction to close the gap and a gas bleed arrangement is provided for allowing gas from a high pressure side of the seal to bleed into the gap so as to apply a force tending to separate the members. The gas bleed arrangement includes a bore extending between the front face and a rear face of one of the sealing members, a generally radial groove formed in the rear face of the sealing member and a plate overlying the rear face to cover the groove and thereby define between the rear face of the sealing member and the plate a bleed passage connecting the bore to the high pressure side of the seal.

Abstract: A seal assembly for sealing a space between a rotating shaft and a housing. In this regard, the seal assembly includes a rotating component connected to the shaft, and a stationary component connected to the housing. A first seal is connected to the rotating component and a second seal is connected to the stationary component. The first seal includes at least one dispersion member that generates a fluid disturbance in a region adjacent the space during rotation of the rotating component. In this manner, any contaminants that may be prone to enter the space are dispersed away from the space and prevented from entering.

Abstract: A back-up ring for use in a sealing assembly having an annular body with a first face and a second face and defining an axial thickness, the first face being adapted to be engaged by an annular seal ring, a first cut in the first face extending axially inwardly from the first face at an angle of less than 90° but greater than 0° to the first face, a second cut in the second face, the second cut being interconnected to the first cut and being at an angle thereto, the angle of at least a portion of the second cut being 90° or greater but less than 180° to the second face.

Abstract: A panel assembly of the kind found in the air intake of a gas turbine engine or a fan duct is designed to be demountable for maintenance purposes. Consequently there exists between the panels a gap to be sealed. The invention provides a deformable seal for the purpose comprising an elongate, hollow resilient member mounted on a flange at the edge of one of the panels and arranged to be pressed against a flange at the confronting edge of the adjacent panel. The flanges are shaped such that the hollow member when pressed between the flanges effectively seals the gap between the panels and a portion of the seal member lies flush between the panel edges.

Abstract: A gasket for preventing high-temperature fluid of an internal combustion engine from leaking is located between an adjacent pair of components of the engine. The gasket includes a gasket plate (15) made of an electrically insulating material. The gasket plate has a hole (16). An annular sealing member is made of a material having a higher heat resistance than the gasket plate. The annular sealing member (17) covers part of the gasket plate that defines the hole. Therefore, the gasket is capable of, for an extended period, preventing metal components in an internal combustion engine from directly contacting each other.

Abstract: A multi-wheel hub assembly comprises a central hub and at least three wheels rotatably attached to the central hub. The central hub is configured for being rotatably attached to a support assembly. The central hub includes a mounting structure defining a rotational axis about which the central hub is rotatable when attached to a mounting member of the frame assembly. Each one of the wheels is approximately a common radial distance from the rotational axis of the central hub. Each one of the wheels is approximately evenly spaced with respect to each adjacent one of the wheels. A rotational axis of each one of the wheels extends generally parallel with the rotational axis of the central hub.

Abstract: A toolbox that is both functional and provides a lockout system for added security. The toolbox has a scissor-spring mechanism which aids in uncovering bottom portion of toolbox. A rectangular shaped body which holds one box over another to provide the bottom portion a secure area with the most protection. The lower portion provides oversized space for storage of tools and helps secure tools. A security lock is located on the upper side of the tool box which secures the entire box. The toolbox is equipped with moving tires which can be locked. Handles are provided for the purpose of aid in lifting and hauling the toolbox.

Abstract: Disclosed herein are soft goods attachment designs and techniques for a stroller. The stroller includes a frame having a section, and further includes a soft goods component with an edge having a loop that forms a tunnel running along the edge. The soft goods component is attached to the section of the frame at the edge. A support strip is inserted in the tunnel and shaped to extend along the edge of the soft goods component and follow the section of the frame to facilitate attachment of the soft goods component to the frame. In some cases, a set of fasteners extends through the support strip to secure the soft goods component to the frame.

Abstract: A transport caddy preferably includes at least a wheel supporting a base portion, an alpine snow ski detachably secured between the base and cover portions, and a ski pole disposed within the cover portion and secured adjacent the alpine snow ski by an accessories support portion detachably attached to the alpine snow ski is disclosed. Preferably, the ski pole is secured to the transport caddy by steps that include at least: positioning a tip of the ski pole within a pole tip confinement aperture provided by the cover; rotating a ski pole confinement member of the accessories support portion into non-adjacency with a ski pole retention portion of the accessories support portion; disposing a shaft portion of said ski pole within the ski pole retention portion; and re-rotating said ski pole confinement member into pressing contact with the shaft portion.

Abstract: The present invention relates to an air spring lift kit that has a trailing arm with a first end portion that is pivotally connected to a hanger bracket. A horizontally oriented air bag is connected at one end to the hanger bracket and connected at another end to a pivoting lever arm. A link has one end pivotally connected to the lever arm and another end pivotally connected to a flange member that is secured to the trailing arm. A vertically oriented air bag is located between a second end portion of the trailing arm and a frame member of a vehicle, for example, a dump truck or a trailer in a tractor-trailer combination.

Abstract: A power assist module includes a battery powered motor mounted on a manually operated vehicle, such as a bicycle. The power assist module is fixedly mounted on the bicycle and can be easily removed without the need for tools, so that the bicycle can be manually operated in a conventional manner when so desired without carrying the extra weight of the power assist module. The power assist module includes a motor assembly which is operated through a gear reduction assembly to drive a crank drive gear mounted in conjunction with a crank arm of the bicycle.

Abstract: A method of assembling seating units includes a seat, a back, and a control supporting the seat and the back on a wheelchair base. A wheelchair base includes a frame beam extending transversely across the wheelchair base. An adjustable extendable support column extends between the beam and the control for adjustably supporting the seating unit on the wheelchair base frame. The control and/or the transverse beam can be constructed to receive the same structure as is provided on a standard task chair. By this arrangement, a plurality of similar chairs can be ordered, some having standard bases and others having a wheelchair base. Concurrently, the seating unit with the wheelchair base can include substantially all options and styling offered in the standard task chair.

Abstract: A pedal-operated crank drive assembly for a bicycle includes a crank axle, a crankset rotatably disposed on the crank axle and including a tubular mount portion which surrounds the crank axle, a crankarm having a drive delivering head which is coupled to the crank axle to be rotated therewith and which has a plurality of angularly displaced recesses, a plurality of pawls disposed respectively in the recesses to be movable between driving and idle positions, and an annular toothed member disposed on the tubular mount portion to couple with the pawls to form a uni-directional mechanism. A plurality of biasing members are disposed to bias a respective one of the pawls to the driving position. A flexible annular shield member is disposed to prevent entry of extraneous dirt into the drive delivering head.

Abstract: A vehicle frame assembly includes a forked first frame member coupled to a second frame member via a coupling device. The coupling device includes first and second tab units, and a fastening unit. The first tab unit is mounted on the first frame member, and includes a pair of first tabs, each formed with a first coupling hole and an angle-adjusting hole unit. The second tab unit is mounted on the second frame member, and includes a pair of second tabs, each formed with a second coupling hole and an engaging hole unit to be registered with the first coupling holes and the angle-adjusting hole units, respectively. The fastening unit includes a first fastener extended removably through the first and second coupling holes, and a second fastener extended removably through the angle-adjusting hole units and the engaging hole units.

Abstract: A steerable leveraged suspension suitable for a bicycle or electric Bicycle of motorized wheel hub design. Comprising of a vertical fork, which attaches to a bicycle frame front neck tube. The lower portion of said vertical fork is curved at its bottom to the rear of the frame neck head tube centerline, so as to improve steering trail geometry. The bottom of the curved fork is a pivot point to which pivot arms are attached. To the pivot arms the front wheel is attached forward of the pivot points by means of slots to which the front wheel Axel shaft fits into. Also two leveraging pivot arm extensions are attached. The leveraging arms provide a means of suspension leverage and a mounting point for brakes. For the purpose of suspension are rubber cord (bungee cord) and a compression damping spring of gas charge type.

Abstract: A foldable bicycle includes a central portion of the frame, which defines the bicycle's geometry, that is substantially rigid. That is, the down tube, seat tube, top tube and bearing tube are substantially fixed relative to each other. Another feature of the foldable bicycle is that the front wheel can be folded into a position between the down tube, which is comprised of two tubes. Yet another feature is a tandem bicycle configuration that does not extend the length of the frame or the wheelbase.

Abstract: A stem front cap for the stem of a bicycle, including: a body having a mounting part that is adapted and structured for receiving and securing a handlebar in conjunction with a stem. A receiving section at the body of the stem front cap is provided for receiving and securing at least one aero support to enable the user to assume an aerodynamic operating posture on a bicycle.

Abstract: A bicycle head assembly comprises an assembly seat; a bearing being installed in the assembly seat; an inner side of the bearing being rotatably installed with a stand tube of a bicycle; a washer formed by winding a substrate through several circles so as to have a form of a spring; thereby the washer being elastic and compressible; the washer being received into the assembly seat so as to position the bearing and thus the bearing is combined into the assembly seat. All cycles of the washer have a same diameter, or the washer has a tapered shape. The substrate is a flat and long substrate.

Abstract: A structure for a bicycle frame system is described by using multiple composite tubes bonded to one another, wherein apertures, or “ports,” are molded between the tubes to improve the stiffness, strength, aerodynamics and comfort of bicycle frame component.

Abstract: A wheel spinner assembly for mounting on a bicycle and enhancement of the bicycle's aesthetic features. The bicycle wheel spinner assembly is adapted for use on a bicycle wheel having an axle and a plurality of spokes, includes a hub assembly, an end cap member and a rotor. The end cap member is operatively connected to the hub assembly and configured to contact an axle of a bicycle wheel and the rotor is operatively connected to the hub assembly and extends radially outwardly therefrom.

Abstract: A wheelchair luggage towing device to securely attach a luggage to the back of a wheelchair and pull the luggage along with the wheelchair. The device can be used with wheeled, as well as unwheeled luggage using a wheeled luggage carrier. The device comprises of a single or multiplicity of bars. A single bar is used with wheelchairs which have long vertical bars on their back. In this case, a bar is horizontally connected to the vertical bars at the back of the wheelchair so that a luggage can be secured on it. Two bars are used with wheelchairs which have a horizontal bar at their upper back. In this case, one bar is vertically connected to the horizontal bar and the second bar is connected to the lower end of the horizontal bar. Three bar combination is used with wheelchairs which have two short vertical bars and no horizontal bar. In this case, the first bar is connected horizontally to the vertical bars of the wheelchair. The second bar is connected vertically to the first bar.

Abstract: Children's ride-on vehicle assemblies having leading and trailing vehicles that are removably coupled together by a connection apparatus. The leading vehicle is an independently operable ride-on vehicle having a drive assembly that is selectively configured between a plurality of drive configurations, such as responsive to user inputs via user input devices. The assembly further includes a detection system adapted to detect whether or not the connection apparatus is in its coupled configuration and to restrict the plurality of drive configurations responsive thereto. This restriction may be automatic responsive to coupling of the leading and trailing vehicles together, and it may be made regardless of user inputs that otherwise would select and/or enable one of the restricted drive configurations.

Abstract: Apparatus having at least the following components: a) a longitudinal member having a respective longitudinal axis, the longitudinal member being sized and configured for detachable attachment to an item of heavy equipment; and b) a contoured member having a respective longitudinal axis and at least a first region and a second region which are not coplanar, and which first and second regions are in contact and together define an angle from the horizontal, the first region being sized and configured for detachable attachment to a trailer hitch or tow hitch; the longitudinal member and the contoured member being attached to each other such that the respective longitudinal axes of the members are substantially perpendicular to each other. Also provided are a kit comprising the apparatus, and a method for retrieving an item of heavy equipment.

Abstract: A power retractable trailer hitch for a vehicle can include a hitch assembly movably coupled to an external case or support member, and a power actuator engaging the hitch assembly. The power actuator can be operable to move the hitch assembly between a retracted position and an extended position. A controller can be operable to control activation of the power actuator. An interlock can be provided requiring a transmission of the vehicle to be in a parked position before the controller can be operable to move the hitch assembly between the retracted position and the extended position. A locking member can be operable by the controller to move between a locked position and a released position with respect to the hitch assembly. The locking member can be operable to be in a locked position, when the hitch assembly is in at least one of the extended position and the retracted position, and in a released position, when the hitch assembly is in transition between the extended position and the retracted position.

Abstract: The vehicle hitch assembly disclosed herein provides a system and method for modifying a vehicle such as, for example, a performance car, to haul or tow a load. As disclosed herein, the system and method provides an aesthetically pleasing towing assembly that cooperates with the vehicle frame to allow a performance vehicle to tow or haul a load. In one embodiment, a vehicle hitch assembly includes a hitch mounting bracket having a support sleeve, the hitch mounting bracket sized to cooperate with a cavity provided within a vehicle facia. The assembly further includes a hitch adaptor fixedly coupled to the hitch mounting bracket and sized to removably engage a mounting passage provided within the vehicle facia, and a mounting plate configured to removably engage the support sleeve.

Abstract: A hitch release system for releasing the locked engagement of a hitch, the hitch having a manually operable release bar coupled to a locking mechanism, the hitch release system includes a selectively actuatable power assist system, the power assist system being releasably, operably coupled to the release bar, wherein actuation of the power assist system acts to translate the release bar in a first axial direction, such translation acting to release the locking mechanism. A method of release is further included.

Abstract: The trailer hitch receiver cover of the present invention has a resilient means for covering and sealing the peripheral collar or flange of the hitch receiver. It also has integrally-formed means for covering and sealing the lateral holes in the hitch receiver. In alternative embodiments, the lateral hole sealing means is accomplished by structure that is disposed either internally to the trailer hitch receiver or externally to it.

Abstract: A ski has rim-side edges that are formed of synthetic material. This allows for easy production of incisions and an ideal course of movement is assured even under unfavorable snow conditions. For this purpose, the incisions extend over at least a portion of the width of at least one synthetic material edge.

Abstract: A stroller is provided having a stroller frame supported by front and rear wheels. The frame includes a latch assembly that is movable between a locked and an unlocked position. When in the locked position, the latch assembly prevents the frame from being folded. When in the unlocked position, the latch assembly allows the frame to be folded. A cup holder is supported by the frame that can move between an extended and a retracted position. The cup holder automatically moves to the retracted position when the stroller is folded.

Abstract: An airbag module has an airbag with an inflation chamber. The inflation chamber has a first portion and a second portion. The first portion of the inflation chamber is deployed generally along a first axis and the second portion of the inflation chamber is generally deployed along a second axis. The first axis is transverse to the second axis. The first portion of the inflation chamber is defined by a front panel and a back panel. The second portion of the inflation chamber is attached to the back panel. An inflator is in communication with the airbag. A tether is provided in the first portion of the inflation chamber. The tether has three portions. The first portion of the tether extends across the first inflation chamber and is secured to the airbag at a first panel location and a first back panel location.

Abstract: A vehicle seat component includes a side air bag module mounted on a frame within a trim cover that also covers a seat pad. An air bag guide includes flexible inner and outer panels that extend between a release seam of the trim cover and the air bag module to provide a guiding function to an inflating air bag. An inner extremity of the flexible outer panel is secured to frame by a connector including at least one lace secured to a single connection location of the frame. One embodiment has a single lace and another has a plurality of laces, specifically three, that converge toward the single connection location.

Abstract: A vehicle seat component includes a side air bag module mounted on a frame within a trim cover that also covers a seat pad. An air bag guide includes flexible inner and outer panels that extend between a release seam of the trim cover and the air bag module to provide a guiding function to an air bag thereof as it is inflated upon deployment so as to project outwardly through the release seam for use. Inner extremities of the flexible inner and outer panels are respectively secured by a first connector to the seat frame and by a second connector to the trim cover in a spaced relationship from each other, and a connection secures the trim cover to the seat component.

Abstract: A structure of a rear portion of a vehicle furnished with a curtain airbag apparatus includes a rear pillar, a soft roof trim, a rear pillar trim harder than the roof trim, and a cover constituting part of the rear pillar trim and covering a specific area of a front face portion of the rear pillar trim. The curtain airbag apparatus includes a curtain airbag and an inflator for inflating and deploying the curtain airbag into the vehicle interior along side window glass. The cover of the rear pillar trim can easily be displaced frontward along an airbag deployment joint. When inflated, the curtain airbag fixed to a vehicle body along an upper edge and a rear edge of the side window glass in a retracted position deploys into the vehicle interior upon separating and displacing the cover of the rear pillar trim frontward from the other part thereof.

Abstract: A physical quantity detector includes a pressure-responsive bridge circuit that outputs a detection voltage including a voltage component corresponding to atmospheric pressure and a voltage component corresponding to a change quantity from the atmospheric pressure, a filter that eliminates the voltage component corresponding to the change quantity from the atmospheric pressure, and a variable gain unit that amplifies a voltage difference between the detection voltage outputted from the bridge circuit and the filter output voltage that is free form the change quantity from the atmospheric pressure.

Abstract: An apparatus (10) for helping to protect a vehicle occupant in a vehicle collision includes an inflatable vehicle occupant protection device (12), an inflator (14) for providing inflation fluid to inflate the inflatable vehicle occupant protection device (12) with the inflator fluid flow from the inflator (14) being transverse to a central axis (16) of the inflator (14), and a shield (70) including a piece (72) of material folded about the inflator (14) and having a wall portion (102) interposed between the inflator (14) and the inflatable vehicle occupant protection device (12) and against which gas initially exiting from the inflator (14) impinges. The wall portion (102) has tear seams (76a-d) that rupture due to inflation fluid pressure acting on the shield (70) to enable the wall (102) portion to form a plurality of flaps (80a-d) within the inflatable occupant protection device (12).

Abstract: The present invention provides a gas generator for an occupant restraining device of a vehicle, comprising a substantially cup-like shaped diffuser shell having a plurality of gas discharge ports on a circumferential wall portion, a substantially cup-like shaped closure shell combined with the diffuser shell to form an outer container, a housing formed by the diffuser shell and closure shell, an ignition device, a gas generating agent ignited and combusted by activation of the ignition device to generate a combustion gas, and a substantially cylindrical filter for purifying and cooling the combustion gas generated from the gas generating agent, all accommodated in the housing, the housing formed by inserting part of an outer peripheral surface in the open portion side of the closure shell into part of the inner peripheral surface of the open portion side in the diffuser shell to abut against each other, so that they are integrated, the filter supported by abutting one end surface thereof against a ceiling sur

Abstract: An apparatus (10) for helping to protect a vehicle occupant includes an inflatable vehicle occupant protection device (12). An inflator (14) provides inflation fluid for inflating the protection device (12). The inflation fluid flow from the inflator (14) is transverse to a central axis (16) of the inflator. A shield (70) includes a piece of material (72) folded about the inflator (14) and having a wall portion (102) that is interposed between at least a portion of the inflator and the protection device (12) and against which inflation fluid initially exiting from the inflator at least partially impinges. The wall portion (102) has a plurality of tear seams (76) that rupture due to inflation fluid pressure acting on the shield (70) to enable the wall portion to form a plurality of flaps (80) within the protection device (12).

Abstract: An impact energy absorbing knee bolster system is basically provided with a lateral offset input restriction structure and a vertical offset input absorption structure. The lateral offset input restriction structure restricts a lateral offset input component of an impact load imparted by a passenger's knee against the knee bolster to lateral direction and promotes deformation of the knee bolster during a collision. The vertical offset input absorption structure absorbs a vertical offset input component of the impact load imparted by the passenger's knee against the knee bolster and to promote deformation of the knee bolster during the collision.

Abstract: Disclosed are embodiments of a multi-firing combustion actuated device for use in automotive safety. The device comprises a combustion actuator and a re-deployable automotive safety component. The actuator is adapted for directing a force from combustion to the automotive safety component.

Abstract: Anti-tip mechanism for wheelchairs having wheels on a rear axle. The mechanism includes left and right side sections that are each attached to an exterior end of the rear axle with a bracket. Each side of the mechanism extends perpendicular to the axle when the mechanism is in a functional position and parallel to the axle when in an idle position. The bracket is equipped with a hinge plate mounted at an angle; whether the angle is positive or negative depends on whether the bracket is part of the mechanism's left side or right side. A support arm is rotatably coupled to the hinge plate by a locking mechanism and includes a support roller at the other end. Release of the locking mechanism allows movement of the support arm between the functional and idle positions.

Abstract: A steering support beam 1 includes a cylindrical support beam body 2 and a plurality of brackets 10, 13, 20, 23 and 26 each having a fitting portion fitted on the cylindrical support beam body 2 and fixed thereto. The fitting portion of at least one of the brackets 20 is fixed to the support beam body 2 in a state in which the fitting portion of at least one of the brackets 20 is positioned with respect to the support beam 2 by being interposed by an outer pipe 3 fitted on the support beam 2 between the fitting portion of at least one of the brackets 20 and the fitting portion of the other bracket 10.

Abstract: A mobile trailer for use with a mobile robot, the trailer comprising a rollable frame for releasably attaching to a robot, a mechanism attached to the frame for selectively dispensing a communication cable, the cable providing communication between the trailer and command centre, a wireless communication mechanism for communicating wirelessly between the trailer and the robot, and a mechanism for selectively moving the trailer between a hitched position and unhitched, such that in the hitched position the trailer being pulled by the mobile robot, and in the unhitched position the trailer being detached from the mobile robot.