Abstract: A vehicle seat assembly including a lower seat cushion with an upper surface and a lower surface. The vehicle seat assembly also has a plurality of sensor assemblies positioned adjacent the lower surface of the lower seat cushion. The sensor assemblies are responsive to a condition of the lower seat cushion. The vehicle seat assembly also has at least one reinforcing insert disposed between at least one of the sensor assemblies and the lower surface of the lower seat cushion. The reinforcing insert protects the lower seat cushion by more evenly distributing pressure from the sensor assemblies onto the lower seat cushion to prevent premature wear and maintain comfort over the course of its operating lifetime.

Abstract: A video game chair for enhancing the enjoyment of a video game includes a chair member formed of a horizontal seat portion with a backrest portion vertically extending therefrom. Adjacent each of two opposing sides of the seat portion is an adjustable arm with a game controller mounted thereon. A speaker and adjustable leg are mounted adjacent each of two opposing sides of the backrest portion. An interface box is removably attached to a lower surface of the seat portion for electrically connecting the speakers and controller to a conventional game box.

Abstract: The body hair and feet drying chair is a seat comprising an upright base having a top portion, a middle portion, and a bottom portion, and a hollow interior. A seat is disposed on top of the base. At least one air outlet is defined in the seat in communication with the base's hollow interior. At least one air channel is defined in the bottom portion of the base in communication with the base's hollow interior. A motorized fan contained within the hollow interior of the base draws air into the hollow interior through the air channels and expels air from the hollow interior through the air outlets. Air expelled from the air outlets dries genital and posterior areas of a user seated on the body hair and feet drying chair, while air drawn into the air channels dries the user's feet and toes when the user's feet and toes are positioned over the air channels.

Abstract: A vehicle occupant sensing system for a vehicle seat assembly that includes at least one emitter and at least one sensor operable to detect relative distance between the sensor and the emitter to thereby detect a condition of the vehicle seat assembly. The vehicle occupant sensing system also includes a biasing pad adapted so as to be disposed below a seat cushion of the vehicle seat assembly so as to deflect in response to deflection of the seat cushion. The biasing pad supports at least one of the emitter and the sensor such that the emitter and the sensor are biased away from each other and such that one of the emitter and the sensor are supported for movement toward and away from the other.

Abstract: An antitheft device is provided, whereby a person who attempts to commit a theft of a vehicle can be captured, having an improved crime prevention performance to thefts of vehicles, electrical equipment mounted on vehicles, money and articles left inside vehicles and the like. The antitheft device includes an expansible body system to expand an expansible body for blocking the motion of an intruder in a prescribed space inside a vehicle, which emits a substance to be a base of foaming polystyrene inside the vehicle and applies steam to the substance so that the foaming polystyrene blocks the motion of an intruder, when the presence of the intruder inside the vehicle is detected.

Abstract: An apparatus is disclosed for inhibiting an unauthorized person from occupying a seat. According to one aspect, a lock is operatively attached to the seat of a foldable chair to prevent unfolding of the chair. Further, the lock allows the chair to unfold upon obtaining an input code that matches an unlock code. According to another aspect, a blocking member is positioned to block a person from comfortably sitting in a chair. The blocking member can be repositioned to unblock the person from comfortably sitting in the chair upon obtaining an input code that matches an activation code.

Abstract: A cable raceway assembly includes an elongated raceway adapted for being mounted to a supporting structure. The raceway defines an open, upward-facing trough for receiving a cable and includes a mounting structure for attaching the raceway to the supporting structure. A fluid-resistant cover is attached to the raceway. The cover encloses at least a portion of the trough and forms a flowpath for directing fluid over and away from the trough.

Abstract: A chair for providing comfort to a user in inclement weather conditions includes seat and back sections with isolated first and second cavities. The first cavity contains a volume of water. A power mechanism includes a pump and conduits for retrieving water from the first cavity and directing same along the second cavity towards misting heads on the top of the back section. The power mechanism includes an internal power supply source and a switch. An elongated drain tube allows a user to release the water housed within the first cavity.

Abstract: A vehicle seat has seating components, such as a seat piece (20), a backrest (22) and a leg-rest (24), which are adjustable as to their positions, particularly in their relative inclination, by at least one operating device (26, 44). A monitoring device monitors all the boundary geometries (50, 52) of the moving seat components which may cause collisions and which have given spatial constraints (54). The monitoring device controls the operating devices (26, 44) at all points to guarantee a collision-free movement of all seat components within the spatial constraints. The vehicle seat considered as a total system can undergo adjustment processes without a damaging collision occurring.

Abstract: A universal headrest mounting collar which is engaged with the rods of a headrest on a vehicle seat back and supports a video monitor thereon for viewing by a passenger in a rear seat. The bracket can be secured at a fixed vertical position on the headrest rods and collar assemblies surrounding the rods are horizontally slidable in grooves formed in the base of the bracket assembly to accommodate different spacing between headrest rods by different vehicle manufacturers. The monitor mounting element is universally adjustable to modify the viewing angle of the monitor screen.

Abstract: An electrodynamic shaker apparatus is disclosed for providing shaking and/or vibrational motion. The shaker includes armature and stator assemblies as well as a distributed spring assembly. The shaker apparatus of the present invention is robust, supports increased off-center loads, and has a low profile such that it may be easily placed under an item of furniture in order to impart vibrational motion in response to electrical signals from a variety of sources.

Abstract: A headrest mounting structure includes a headrest, a support frame, which supports the headrest in shape and has a bottom coupling groove and mounting through holes in the bottom coupling groove, and two mounting bars which have a respective top coupling block slidably coupled to the bottom coupling groove of the support frame and selectively fastened to the mounting through holes of the support frame with screws at the desired location subject to the pitch between headrest mounting holes of a vehicle seat to which the headrest to be attached.

Abstract: A vehicle seat assembly for detecting a condition of the seat assembly. The vehicle seat assembly includes a seat cushion. The vehicle seat assembly also includes a vehicle occupant sensing system having a plurality of sensor assemblies. Each sensor assembly includes a base and an upper slide member. The upper slide member is supported for movement toward and away from the base in response to a condition of the seat cushion. Additionally, the vehicle seat assembly includes at least one seat cushion insert having a topside and an underside. The seat cushion insert is disposed between the seat cushion and the sensor assemblies, and the topside has at least one planar section.

Abstract: Seat repositioning systems for vehicles comprise a seat release element that is operable to cause an operator's seat to be temporarily released from a locked position such that the operator's seat may be adjusted to a new position. By optionally positioning the seat release element proximate to an operator's working position, a vehicle operator may reposition the seat while simultaneously performing another task. Moreover, a control module may be provided that is capable of deciding whether or not to allow the operator's seat to be released based upon vehicle parameters such as vehicle speed or load handling conditions. Still further, the control module may temporarily disable select features of the vehicle depending upon the position of the seat.

Abstract: A vehicle seat assembly includes a sensor assembly that is used to provide data for an occupant classification system. The data is used to determine such characteristics as seat occupant weight and position. These characteristics are used to control deployment of a safety restraint mechanism such as an airbag. The sensor assembly is part of a mat that is placed on top of a foam cushion used to form a seat bottom. Fasteners are used to permanently attach the mat to the foam to restrict lateral and vertical movement of the mat relative to the foam.

Abstract: A monitor adapted for mounting in an automobile headrest is provided. A screen structure of the monitor is pivotable about an upper edge thereof, such that the monitor occupies little volume within the headrest. A viewing angle of the screen structure is independently adjustable by a viewer, such that the viewer can continuously select the optimum viewing angle with changing conditions inside the automobile. The screen structure automatically retracts into a housing when struck. Thus, the monitor poses little risk of injury to passengers. The housing of the monitor is attachable to the headrest with screws, which provides a very sturdy connection and reduces the chances of the housing becoming detached from the headrest during a vehicle collision. The hinged connection between the screen structure and the housing is preferably constructed of interconnected components made from sturdy materials, such as metals.

Abstract: An embodiment of the invention has a headrest restraint incorporating a remote-controlled, video monitor with a monitor safety cover and concealed video input and power supply cable. It can serve as an OEM headrest or as an after-market headrest replacement. This embodiment of the invention maintains headrest safety requirements and meets vehicle manufacturers' specifications, unlike headrests specially modified to incorporate a rearward facing video monitor. The monitor safety cover protects rear seat occupants from impact with the monitor. The abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: A display assembly stowably mounted on a vehicle seatback, the display assembly comprising: a support arm having a seat end and a display end, and a viewing screen, where the seat end of the support arm is pivotably connected to the vehicle seatback; and the display screen is rotatably connected to the display end of said seat arm.

Abstract: A seat back video display assembly adapted to be positioned in the back of a vehicle seat having an outer skin cover. In one aspect, the assembly may comprise a receptacle member having sidewalls and a back wall so as to define an opening wherein the receptacle member is adapted to be positioned in the back of the vehicle seat. In addition, the assembly may further comprise a carrier member having sidewalls and a back wall so as to define an opening, wherein the carrier member includes at least one fastener that extends from the back wall of the carrier member and engages with the back wall of the receptacle member to secure the carrier member into the receptacle member. Moreover, the assembly may still further comprise a video display unit that is sized so as to be positioned secured within the opening in the carrier member, wherein the video display unit provides video signals.

Abstract: An entertainment and pacification system for use with a child car seat has speakers mounted in the child car seat with a plurality of audio sources and an anti-noise audio system coupled to the child car seat. A controllable switching system provides for, at any given time, the selective activation of i) one of the audio sources such that the audio signal generated thereby is coupled to one or more of the speakers, and ii) the anti-noise audio system such that an ambient-noise-canceling audio signal generated thereby is coupled to one or more of the speakers. The controllable switching system can receive commands generated at one of first controls located at the child car seat and second controls located remotely with respect to the child car seat with commands generated by the second controls overriding commands generated by the first controls.

Abstract: A monitor adapted for mounting in an automobile headrest is provided. A screen structure of the monitor is pivotable about an upper edge thereof, such that the monitor occupies little volume within the headrest. A viewing angle of the screen structure is independently adjustable by a viewer, such that the viewer can continuously select the optimum viewing angle with changing conditions inside the automobile. The screen structure automatically retracts into a housing when struck. Thus, the monitor poses little risk of injury to passengers.

Abstract: An occupant judging device for a vehicle seat includes a load sensor provided in the vehicle seat and a controller for calculating a detected load value based on an output load value from the load sensor and determining an occupant on the vehicle seat by comparing the detected load value and a predetermined threshold value. The controller judges by a decrease state of the detected load value detected after the seatbelt is fastened being maintained for a first predetermined time that a child restraint device is installed, when a state in which the seatbelt is fastened and the door is opened is detected. Further, the controller judges by a decrease state of the detected load value detected after the seatbelt is fastened being maintained for a second predetermined time that the child restraint device is installed, when a state in which the seatbelt is fastened and the door is closed is detected.

Abstract: A floating chair includes a buoyant member attached to a seat member (“seat”) for maintaining the seat above water. A maneuvering device is operatively attached to the seat. A battery and a CPU are in communication with the maneuvering device. A solar panel is in communication with the CPU for conveying sun location data to the CPU, and the solar panel may be electrically connected to the battery for charging the battery with solar energy. The CPU may determine the position of the seat relative to the sun or a remote object and actuate the maneuvering device to maintain the seat in a constant position relative to either. Further, the CPU may actuate the maneuvering device to move the seat in a clockwise direction, a counterclockwise direction, or laterally. When the floating chair is not in use, the seat may be moved from a lounging configuration to a storage configuration.

Abstract: A low profile sensor assembly for use in a vehicle occupant sensing system that comprises a base, an upper slide member, and at least one intermediate guide member. Also disclosed is a low profile sensor assembly for use in a vehicle occupant sensing system that comprises a base with an outer step and a receptacle, and the low profile sensor assembly also comprises an upper slide member with a lower flange and a retainer. The outer step is adapted to accept the lower flange, and the receptacle is adapted to accept the retainer. The intermediate guide member, the outer step, and the receptacle each allow the respective upper slide member to move further toward the base. Thus, when the low profile sensor assembly is incorporated into a vehicle seat assembly, the low profile sensor assembly is less likely to detrimentally affect the comfort level of the vehicle seat assembly.

Abstract: A monitor-housing assembly designed to removably mount a video monitor to facilitate disengaging of the monitor from the vehicle backrest for storage or use in a different location thereby minimizing theft and maximizing monitor utility.

Abstract: A control lever having one end adapted for attachment to a resting device for controlling movement thereof, and another end having a tactile contour for identifying said control lever.

Abstract: An armrest adapted to be pivotally mounted between a pair of rear vehicle seats includes an elongated base having a first end adapted to be pivotally mounted on a suitable armrest support structure located between the seats, for movement between a deployed position between the seats or in a stowed position defining a further backrest between the seats. A lid covering at least a portion of the base's upper surface is pivotally mounted on the base proximate to its second end, for movement between a closed position and an open position revealing both the upper surface of the base and a video display screen on the underside of the lid. The video display screen, which is preferably itself pivotally supported by the lid, is preferably driven by a video source housed within the base and accessible via the upper surface of the base, as controlled by a rear seat passenger.

Abstract: A vehicle occupant sensing system that includes a sensor assembly. The sensor assembly has a housing that includes a base and an upper slide member. The upper slide member is moveable toward and away from the base. A sensor is operatively fixed relative to at least one of the upper slide member and the base and is operable to detect movement of the upper slide member toward and away from the base. Additionally, the vehicle occupant sensing system includes a variable biasing member adapted to bias the upper slide member away from the base with a force that is non-linearly related to movement of the upper slide member toward and away from the base. The vehicle occupant sensing system of the present invention may be employed in a vehicle seat assembly to detect a condition of the vehicle seat assembly.

Abstract: A monitor supporting device includes a board for attaching to the vehicle seat, a plate pivotally secured to the board with a pivot axle, and a monitor attached to the plate. The plate may be adjusted relative to the board at any selected angular positions such that the monitor may be adjusted to any suitable or selected angular position relative to the vehicle seat or the users, for allowing the users to easily and comfortably viewing the monitor. A bag may be used for receiving a processor device, and has a box for receiving the monitor.

Abstract: A reconfigurable chair arranged for ease of operation by an elderly or disabled person, to change configuration to assist a person in sitting and standing, to limit the risk of a person becoming trapped in the operating mechanisms thereof and/or comprising means for sensing an abnormal load condition.

Abstract: Smart furniture is provided that automatically adjusts to a person's preferences based on an identification of the person. A person may be equipped with an identification device, such as a radio frequency identification device. The smart furniture may include a reader for the identification device to identify a person using the piece of furniture. The smart furniture may also include storage in which settings profiles of users are stored. The smart furniture may then receive a profile that matches the person using the furniture and set adjustable features according to the profile. Settings profiles may be uploaded to or downloaded from a remote storage using a wireless communications interface, such as a wireless network interface.

Abstract: A seat cushion for a vehicle seat unit comprising a cushioning pad upholstered with a seat covering and a flexible but inelastic planar film with an electrically conductive element buried therein that is disposed between the cushioning pad and the seat covering. The cushioning pad has tuck-in grooves in which the seat covering is locally retained. The planar film is thickened at locations where the planar film transverses the tuck-in grooves for reinforcement.

Abstract: There is provided a cable wiring construction capable of preventing troubles caused by breaking of cable. A curl cord 15 is extended from a unit body 11 under a seat 1, and a controller 16 is provided at a tip end of the curl cord 15. A backboard is fixed to a back surface 22 of a seat back 21 with clips, and a locking member is provided between the backboard and the seat back 21. An upper loop portion and a lower loop portion at both ends of the locking member are fixed to the seat back 21 together with the backboard by clips. A locking portion 41 tied to the curl cord 15 is provided in an intermediate portion of both loop portions, and the proximal ends of the locking portion 41 are positioned in a state of being held between the seat back 21 and the backboard, so that the locking portion 41 for the curl cord 15 is provided on the seat back 21. A height position of the curl cord 15 in the locking portion 41 is set so as to be higher than a seat cushion 51.

Abstract: A mounting anchor for a motor vehicle includes a locking bar, a first switch, a first movable plate, a second switch and a second movable plate. The first switch is positioned adjacent a first side of the locking bar and the first movable plate is positioned to slidably engage a groove on the first side of the locking bar. The first movable plate includes a first activation area for receiving a portion of the first switch and a first aperture for receiving a first rotatable arm. The second switch is positioned adjacent a second side of the locking bar, which is opposite the first side of the locking bar. The second movable plate is positioned to slidably engage a groove on the second side of the locking bar and includes a second activation area for receiving a portion of the second switch and a second aperture for receiving a second rotatable arm.

Abstract: There is provided a seat preventing the baggage or the like from being damaged. A leg rest strain gauge is provided on the bark surface of the leg rest frame on the proximal side. When a baggage is placed in the operating space of the leg rest in the bed position, and the leg rest is moved downward and is abutted against the baggage, the leg rest warps to form a convex on the upper surface in response to a reaction force from the baggage (a force in the direction opposite to the direction of the inclining movement of the leg rest). Therefore, the leg rest strain gauge expands, and thus the resistance and the gauged voltage value exceed the inclining direction determination value and the stoppage determination value. Consequently, the operation of the motor is stopped and the further downward movement of the leg rest is stopped. Therefore, the leg rest is prevented from pressurizing the baggage unnecessarily, thereby preventing the baggage from being damaged.

Abstract: In a vehicle seat, a central support member typically consisting of wire mesh or grid and supports most of the load of the vehicle occupant via spring members, and undergoes a relatively large displacement when the occupant is seated in the seat. Thus, by detecting the displacements of various parts of the central support member, preferably peripheral parts thereof, the magnitude of the total load and distribution of the load can be evaluated both reliably and accurately. Additionally, displacement sensors for measuring such large displacements are relatively inexpensive and easy to handle. Also, such sensors would not interfere with the existing seat designs, and would not be adversely affected by the equipment of the seat such as seat heaters.

Abstract: An office chair has multiple moving parts and controls for the different moving parts of the chair. The chair includes a control directory which is in a more visibly accessible position than the controls to a person sitting in the chair. The chair further includes control switches which when activated provide a guide to distinguish which particular set of instructions on the directory pertains to each of the controls. The control switches are activated without producing operation of the actual controls.

Abstract: The present invention relates to a rotating patient chair mounted with an integrated ear diagnosis and treatment unit that controls the position of a microscope 48 and a monitor 50 rotating around the rotating patient chair 30 at a predetermined angle or 180 degrees, the unit including: suctioners 44, 52, a treatment board 46, a blood pressure tester 54 and a manipulating switch box 40 for controlling the diagnosis and treatment tools, and the monitor 50 and the microscope 48 positioned in correspondence with the patient's ears anatomically positioned at 180 degrees to enable the patient to observe all of the treatment processes to the ear parts including the thin, dark auditory canals and eardrums on the monitor 50 installed at an opposite side and to enable the practitioner to explain all of the treatment processes shown on the monitor to the patient and his guardians, thereby improving reliability on the practitioner and the treatment processes and maximizing the treatment effects, and performing diagnosis

Abstract: A gaming machine comprising a seat, a main body portion that includes the seat, an arm pivotally connected to the main body portion, and a user interface attached to the arm and pivotal with respect to the seat, wherein the user interface is operable for gaming. In a preferred embodiment the seat and main body portion comprise an upholstered lounge chair and the user interface pivots in a generally vertical arc between first and second positions.

Abstract: A method for assembling a case (5), such an integral play station, a simple screen for a DVD reader or for a play station, a loudspeaker or other . . . , on a cushion (2) such as a headrest or a seat back cushion, fitted with a protection cover (4). This method is characterized in that it consists in fastening the case (5) directly on the protection cover (4), before mounting said cover (4) on the cushion (2).

Abstract: The invention relates to a headrest, particularly for a motor vehicle seat, comprising a cushion made from synthetic foam which houses an integrated support that can be used to fix two parallel anchor rods to the seat. According to the invention, the anchor rods are fitted with threaded shafts that extend at a right angle from the upper end of said rods. The threaded shafts are each screwed into one end of a housing body in the form of a cylindrical sleeve having a suitable internal threading. Tightening locknuts are used to lock the anchor rods in position on the cylindrical sleeve. Said cylindrical sleeve is fixed to a locking lug, which is disposed on the integrated support, by means of a stirrup piece which is associated with a screw-nut type tightening system.

Abstract: A system for the wireless transmission of information and energy between a removable vehicle seat and the vehicle body, in which the vehicle seat is detected by measuring the inductance. In this connection, the period of an oscillating circuit is determined, in which the winding of the primary side, and thus the inductance, is connected. In this context, the frequency of the resonance voltage is determined as a function of time. In this context, the zero crossings of the resonance voltage is measured. Alternatively, the secondary side impedance is additionally measured on the primary side by a forced oscillation, namely by a voltage decay in a resonance circuit in which the winding is connected as inductance. A monitoring of the performance reliability of a firing pellet is thereby implemented.

Abstract: A vehicle seat assembly includes a sensor assembly that is used to provide data for an occupant classification system. The data is used to determine such characteristics as seat occupant weight and position. These characteristics are used to control deployment of a safety restraint mechanism such as an airbag. The sensor assembly is part of a mat that is placed on top of a foam cushion used to form a seat bottom. Various attachment methods can be used to permanently secure the mat to the foam cushion. Preferably, the mat includes mounting portions that are wrapped around the foam cushion to engage a bottom surface of the foam cushion. Fasteners, adhesives, hook and loop attachments, and other similar attachment members are associated with the mounting portions and are used in various combinations to secure the mat to the foam cushion.

Abstract: A support for entertainment or personal electronic equipment associated with a passenger seat mounted to a floor in a passenger cabin having a base adapted to anchor to the cabin floor laterally adjacent and forward of said seat. A post extends upwardly from the base and has an elongate pocket for housing each articulated support arm. A proximal end of the arm is mounted to the post and a distal end includes an equipment mount. Each arm has independent deployment from a stowed position housed within an associated pocket and a deployed position extending upwardly and laterally from the post toward a central portion of the associated passenger seat.

Abstract: A telephone system apparatus and method adapted for use on an aircraft seatback which provides an electrical connection point (i.e., jack) formed on a housing of the telephone system. The connection point permits coupling of a user's laptop computer to an on-board network, while the housing also provides the electrical connection point for a telephone handset. In one embodiment a pair of additional electrical connection points are provided for allowing more than one individual to couple his/her laptop computer to phone system, and thus gain access to the network. The telephone system eliminates the need to attach independent jacks at various locations on the seats and efficiently uses the housing of the telephone system for this purpose.

Abstract: The present invention provides a replacement cover or faceplate for use with an existing power port assembly on a commercial aircraft that provides additional connectivity to on-board systems using portable electronic devices, while minimizing the need for recertification for installation. The replacement cover or faceplate is installed within the existing structure of the power port assembly using existing bracketing and attachment points. The cover allows access to an existing power port while providing a plurality of connectors for connection to on-board systems.

Abstract: Accordingly, the present invention is a vehicle seat assembly including a lower seat cushion with an upper surface and a lower surface. The vehicle seat assembly also has a plurality of sensor assemblies positioned adjacent the lower surface of the lower seat cushion. The sensor assemblies are responsive to a condition of the lower seat cushion. The vehicle seat assembly also has at least one reinforcing insert disposed between at least one of the sensor assemblies and the lower surface of the lower seat cushion. One advantage of the present invention is that the reinforcing insert protects the lower seat cushion by more evenly distributing pressure from the sensor assemblies onto the lower seat cushion. As such, the lower seat cushion is less likely to prematurely wear and is thus more likely to remain comfortable to sit upon over the course of its operating lifetime.

Abstract: A vehicle seat assembly that includes a seat cushion having at least one recess disposed thereon. The vehicle seat assembly also has a plurality of sensor assemblies, each including a base and an upper slide member. The upper slide member is supported for movement toward and away from the base in response to a condition of the seat cushion. Additionally, the vehicle seat assembly includes at least one seat cushion insert disposed within the recess of the seat cushion.

Abstract: A vehicle occupant sensing system including a circuit carrier, an electric circuit with leads, and a sensor with a body and a plurality of formed terminals. Each of the terminals has a lower portion spaced a predetermined distance away from a plane defined by the bottom surface of the body. Moreover, the system has a plurality of conductive connectors each including a blade extending into the circuit carrier and into electrical communication with a lead of the electric circuit. The body is supported on the circuit carrier, and the terminals are supported by the top end of the connector. Also included is a method of manufacturing the same. The formed terminals allow the sensor to be more easily positioned relative to the connector, thereby facilitating assembly. Also, the connectors support the terminals when the connector attaches to the terminal, thereby inhibiting damage to the terminals that could otherwise occur.

Abstract: A sensor assembly for use in a vehicle seat cushion for detecting the presence of an occupant includes a mat adapted to be installed in the vehicle cushion. The mat includes first mounting structure and a first sensor device attached to the mat. A first member has a second mounting structure adapted to be attached to the first mounting structure for attaching the first member to the mat. A second member is movably mounted relative to the first member about an axis. A second sensor device is mounted in the second member.