Abstract: An infusion pump which may include a control unit and a pump engine may be used to facilitate administration of medicinal fluids to a patient. A control unit may include a motor, a controller, a housing, and a motor coupling, where the motor coupling includes two protruding motor coupling tabs extending in a direction parallel to an output shaft of the motor. A pump engine may include a housing, a rotor disposed in the housing, and a pump coupling, where the pump coupling includes at least two protruding pump coupling tabs extending in a direction parallel to an input shaft of the rotor. The controller may be configured to change an operational mode of the infusion pump, where when the infusion pump is in a positioning mode, the controller activates the motor to move the output shaft to a predetermined angular position.

Abstract: Embodiments disclosed herein relate to detection systems for an infusion pump. An occlusion detector for an infusion pump includes a membrane that deforms in response to fluid pressure in a fluid flow path branching off of the main fluid flow path of the infusion pump. The membrane deforms in response to fluid pressure, applying an axial pressure to a piston, which in turn triggers a force sensor. A controller of the infusion pump triggers an alarm or alerts a user when a threshold is reached. A bubble detector for the infusion pump includes a light emitter and reflective surface. Light shines through the fluid flow path, refracting differently if there is air present in the flow path. A light sensor detects the light and conveys an output signal to the controller. If detected air surpasses a threshold, the controller sounds an alarm or otherwise alerts the user.

Abstract: The present invention provides a model vehicle having a motor and electronic speed control for driving and braking driven wheels, combined with a separate braking system for non-driven wheels. A controller and a method of operation are provided.

Abstract: An electrical control system for a rotatable wheel cover assembly is presented, the system including a controller assembly comprising processors for controlling the relative motion of a wheel cover rotatably mounted to a wheel frame of a vehicle. The controller assembly outputs a first signal to motor drivers, which are mounted within the vehicle separated from the wheel cover, the motor drivers passing a first drive frequency to motor leads for open loop control of the speed of the motors that drive the wheel cover. The electrical control system provides power from an inboard side of the wheel frame to an outboard side via a slip ring assembly having connector assemblies passing through the wheel frame for controlling motion of the wheel cover. The wheel cover is mounted to a shaft of the motor, wherein the motor is mounted coaxially with the wheel frame.

Abstract: A powered scale model vehicle having a transmission with a forward gear and a reverse gear. The transmission is shiftable between the forward gear and the reverse gear. The vehicle has a radio control receiver, a sensor and a microcontroller. The receiver is adapted to output a throttle signal and a shift signal to the microcontroller. The sensor is adapted to obtain a vehicle speed measurement. The microcontroller is electrically coupled to the receiver and the sensor. The microcontroller may be adapted to control a timing and execution of a forward/reverse shift on the transmission based on at least the vehicle speed measurement, the throttle signal, and the shift signal, for example.

Abstract: The present invention provides a model vehicle having a motor and electronic speed control for driving and braking driven wheels, combined with a separate braking system for non-driven wheels. A controller and a method of operation are provided.

Abstract: A method of torque adjustment by removing and replacing a spur gear secured to a clutch driver plate in a slipper clutch for a model vehicle without changing the axial load applied by a spring to the clutch driver plate. The spring is configured to apply an axial load to at least a portion of the clutch driver plate in the axial direction of the transmission input shaft, the spring being adjustable to vary the axial load.

Abstract: An electrical control system for a rotatable wheel cover assembly is presented, the system including a controller assembly comprising processors for controlling the relative motion of a wheel cover rotatably mounted to a wheel frame of a vehicle. The controller assembly outputs a first signal to motor drivers, which are mounted within the vehicle separated from the wheel cover, the motor drivers passing a first drive frequency to motor leads for open loop control of the speed of the motors that drive the wheel cover. The electrical control system provides power from an inboard side of the wheel frame to an outboard side via a slip ring assembly having connector assemblies passing through the wheel frame for controlling motion of the wheel cover. The wheel cover is mounted to a shaft of the motor, wherein the motor is mounted coaxially with the wheel frame.

Abstract: A model vehicle slipper clutch is provided, comprising a spur gear for receiving torque from an actuator, a clutch driver plate secured to the spur gear for receiving torque from the spur gear, a transmission input shaft for transmitting torque from the slipper clutch to a model vehicle transmission, a spring for applying a load to the driver plate in the axial direction of the transmission input shaft, a bearing positioned between the spring and driver plate for supporting the spur gear for rotation about the transmission input shaft and for applying a load from the spring to the drive plate in the axial direction of the transmission input shaft.

Abstract: A locking differential assembly for use in a toy model vehicle. This is accomplished by mounting a locking clutch assembly on an output shaft of a differential gear carrier having an external face. The locking clutch assembly includes a slider member that may be configured to move along the output shaft to engage the external face to disable a differential action of the differential gear carrier.

Abstract: A ball joint for a model vehicle suspension is provided, comprising a support member, at least a portion of the support member forming a spherically-shaped surface, a fastener for securing the support member to a suspension member, a housing containing at least a portion of the support member and having an opening for accessing at least a portion of the support member, a seal covering the housing opening, the seal having a self-healing port, the self-healing port of the seal having a first position allowing introduction of material through the seal and a second position substantially preventing the passage of debris into the housing, the seal being in the first position in response to a force applied normal to at least a portion of the surface of the self-healing port and the seal being in the second position in response to the substantial absence of a force applied normal to the surface of the self-healing port.

Abstract: A rocker arm for a model vehicle is provided, comprising a first portion and second portion each having an input and an output arm and each having an opening for receiving a pivot member about which the portions rotate. The first and second portions are secured for rotation together about a rotational axis through the respective openings and are spaced apart generally along the rotational axis. The rocker arm further comprises a suspension input coupling member that extends between the input arms of the first and second portions, where the input arms are spaced along the input coupling member, and a suspension output coupling member that extends between the outputs arms of the first and second portions, where the output arms are spaced along the output coupling member.

Abstract: A model vehicle suspension is provided, comprising a vehicle chassis, a spring for providing a supporting suspension force, one or more dampers for providing a damping suspension force, the dampers having an elongated shape, wherein the dampers are mounted on the chassis with a longitudinal axis substantially horizontal relative to the chassis and at least a first suspension member mounted to the chassis for supporting a vehicle wheel, the first suspension member being mounted for movement upwardly and downwardly at the location for supporting a vehicle wheel. A coupling mechanism for transmitting suspension forces from one or both of the spring and the one or more dampers to the first suspension member at the location for supporting a vehicle wheel is also provided, the coupling mechanism being configured to transmit suspension forces to the first suspension member, while allowing movement of the first suspension member at the point of supporting a wheel.

Abstract: A mechanism for connecting a drive shaft to a stub axle of a vehicle is provided, comprising a drive shaft having a Cardan joint for driving a wheel, the Cardan joint having an inner and an outer yoke. The mechanism further comprises a wheel drive shaft for transmitting torque from the outer yoke to the wheel, wherein at least a portion of the wheel drive shaft engages at least a portion of the outer yoke, an opening formed though at least a portion of the wheel drive shaft and at least a portion of the outer yoke when a portion of the wheel drive shaft engages at least a portion of the outer yoke, a drive pin for insertion into the opening to secure the wheel drive shaft for rotation with the outer yoke, and a bearing surrounding at least a portion of the outer yoke and retaining the drive pin within the opening.

Abstract: A steering mechanism for a model vehicle is provided, having one or more steering actuators, a steering control arm pivotally mounted for rotation relative to a model vehicle chassis, the steering control arm being coupled directly to at least two tie rods, each tie rod controlling the steering of at least one wheel of a vehicle, and each of the one or more steering actuators coupled to the steering control arm to rotate the control arm relative to the vehicle chassis.

Abstract: A method of configuring components on a chassis of a model vehicle is provided, comprising providing a vehicle chassis, mounting an engine to the vehicle chassis such that the engine crankshaft is positioned at a first height relative to the chassis, and mounting a transmission to the vehicle chassis such that the transmission output shaft is positioned at a second height, and wherein the first height of the crankshaft is no less than about 3 mm and no more than 15.5 mm higher than the second height of the output shaft.

Abstract: An apparatus for securing one or more loops of a length of tubing in a model vehicle is provided, comprising a support configured to be secured directly or indirectly to the chassis of a model vehicle, and a first fastener secured to the support for retaining at least a first portion of a loop of tubing.

Abstract: A throttle linkage for a vehicle engine is provided comprising a vehicle engine and a throttle actuation arm secured for pivotal movement about an axis substantially fixed relative to the engine, the throttle actuation arm having an axis extending from the pivotal axis. A throttle control arm extending from the engine and capable of actuation to adjust engine power is also provided, the throttle arm having an axis extending from a point of connection to the throttle and substantially intersecting the throttle actuation arm axis, along with a coupling for engaging the throttle control arm and throttle actuation arm at approximately the point of intersection of their respective axes, the coupling allowing sliding of the arms along their respective axes, relative to each other.

Abstract: A locking differential assembly for use in a toy model vehicle. This is accomplished by mounting a locking clutch assembly on an output shaft of a differential gear carrier having an external face. The locking clutch assembly includes a slider member that may be configured to move along the output shaft to engage the external face to disable a differential action of the differential gear carrier.

Abstract: An electrical control system for a rotatable wheel cover assembly is presented, the system including a controller assembly comprising processors for controlling the relative motion of a wheel cover rotatably mounted to a wheel frame of a vehicle. The controller assembly outputs a first signal to motor drivers, which are mounted within the vehicle separated from the wheel cover, the motor drivers passing a first drive frequency to motor leads for open loop control of the speed of the motors that drive the wheel cover. The electrical control system provides power from an inboard side of the wheel frame to an outboard side via a slip ring assembly having connector assemblies passing through the wheel frame for controlling motion of the wheel cover. The wheel cover is mounted to a shaft of the motor, wherein the motor is mounted coaxially with the wheel frame.