Abstract: A press tool employs a drive system that allows a first portion to be displaced relative to a second portion. A drive surface is supported by the second portion. A receiving member defines an engaging surface and a receiving cavity. The receiving member is supported by the first portion along a drive axis extending through the drive surface. Operation of the drive system displaces the drive surface relative to the receiving member.

Abstract: The present invention provides a disposal snap ring installation tool that enables a consumer to easily install a disposal snap ring. The disposal snap ring installation tool includes a body and a handle. The body includes a base and an arm. At least a portion of the handle extends angularly downwardly and outwardly relative to the outer wall of the base. The base is operable to be inserted into a circumferential gap in a disposal snap ring. The arm is operable to receive an end of the disposal snap ring such that one end of the disposal snap ring abuts one of the first end wall and the second end wall of the base. The base is operable to be removed from the circumferential gap in the disposal snap ring by pulling the handle radially outwardly in a plane of the disposal snap ring.

Abstract: A fastener driving tool is provided which performs driving only when a trigger lever is turned ON following a push lever. The fastener driving tool includes a sleeve valve driving a driver blade, and in the sleeve valve, supply and exhaust of compressed air are controlled by a trigger valve. The trigger valve includes a valve piston movable between an air-supply position where the valve piston causes an opening part and a communication port to communicate with each other and blocks an exhaust port, and an exhaust position where the valve piston blocks the opening part and causes the exhaust port and the communication port to communicate with each other, and a plunger movable between a communication position where the plunger causes compressed air in a pressure accumulation chamber to be supplied to a pressure chamber and a shutoff position where the plunger shuts off communication between the pressure accumulation chamber and the pressure chamber and causes air in the pressure chamber to be exhausted.

Abstract: A fastener driver comprises a drive blade movable from a retracted position to an extended, driven position for driving a fastener into a workpiece and a gas spring mechanism for driving the drive blade from the retracted position to the driven position. The gas spring mechanism includes a drive cylinder and a drive piston attached to the drive blade for movement therewith. The drive piston is acted on by a driving force resulting from a pressure differential created by the gas spring mechanism. The fastener driver also includes an adjustable valve for selectively limiting a flow of gas into the drive cylinder above the drive piston, or a flow of ambient air at atmospheric pressure from the drive cylinder beneath the drive piston, thereby changing the pressure differential acting on the drive piston, as the drive piston and the drive blade move from the retracted position to the extended position.

Abstract: The invention relates to a setting tool for fastening elements, comprising a driving piston that can be driven by a primary drive, and comprising a secondary drive. In order to create a lightweight, handy setting tool, the primary drive is combined with the secondary drive in a hybrid drive system for the driving piston in such a way that the driving piston can be driven by both the primary drive and the secondary drive.

Abstract: A power tool, including an output member, a motor, a housing, a transmission device, and a shifting device. The shifting device includes a first shifting element, a second shifting element, an operation member, and a connecting member. The first shifting element is capable of switching between a first position and a second position, and the second shifting element is capable of switching between a third position and a fourth position. When sliding relative to the housing, the operation member drives the first shifting element to switch between the first position and the second position, and a position of the second shifting element remains unchanged. When the operation member rotates relative to the housing, the connecting member drives the second shifting element to switch between the third position and the fourth position, and a position of the first shifting element remains unchanged.

Abstract: In order to provide a tool in which a motor is assuredly prevented from being restarted when power is turned on again after a power supply interruption due to a contingency, a disk grinder 1 includes a motor 2 and a switch 12 switchable between an ON position at which the motor is driven by an operator and an OFF position at which the motor is stopped. Furthermore, first and second restart prevention means 60, 90 are provided to disable driving of the motor until the switch is turned again to the ON position when power supplied to the motor 2 falls below or under a predetermined value.

Abstract: An impact tool is provided which has a driving mechanism, that drives a tool bit, a motor that drives the driving mechanism, an inner housing that houses the driving mechanism, an outer housing that has an internal space for housing the inner housing and the motor, an opening that leads from the outside to the internal space of the outer housing, and a covering member that covers the opening.

Abstract: In most homes and other buildings, on ceiling or wall near ceiling are alarm and detectors. A person can push their button with subject tool. The subject includes distinctly-shaped attachments, of the same plastic, all of four types and joining methods. First type, body of 2.16 cm (0.85?) diameter, hollow black plastic piping, proximal looped cap for hanging, and distal inside threading for joining second or third types. Second type, two extensions of same body features, and a proximal connector instead of cap for joining first and second types. Third type, five attachments of two segments, proximal threaded portion for joining first or second types, and purposefully distinctly-shaped portion for different alarm or detector situations. Fourth type, twenty-one other attachments of said segments, the five shapes with either solid, hollow, or screw (fourth joining method) threaded portion for joining either distal hollow or projected part respectively on further-reaching pole.

Abstract: The robot cleaner includes a case, a suction device provided in the case, a suction nozzle for sucking dust from a floor by driving of the suction device, a dust collection device for collecting foreign substances contained in the air sucked via the suction nozzle, a wheel unit to allow movement, a main controller for controlling the driving of the suction device and the wheel unit, a Wi-Fi module provided in the case to provide Access Point (AP), and a NFC module provided in the case to provide an external terminal with AP information for accessing to the AP through NFC communication.

Abstract: A robot includes a robot main body including a first member, a second member, and a joint that coupling the first and the second members together so as to be relatively rotatable around an axis, a fixed stopper fixed to the first member, and an adaptor and a movable stopper that are each detachably attached to the second member. The second member has a main-body-side attachment part to which either one of the adaptor and the movable stopper is selectively attached. The adaptor has an adaptor-side attachment part to which the movable stopper is attached and which is arranged in a position different from that of the main-body-side attachment part in a circumferential direction around the axis, while the adaptor is in a state of being attached to the main-body-side attachment part.

Abstract: A robot arm according to the present invention includes: a shoulder joint assembly which is connected to an upper arm portion, and includes a drive unit for generating driving power; an elbow joint assembly which is provided between the upper arm portion and a forearm portion, and operates by being supplied with driving power from the drive unit; and a wrist joint assembly which is provided between the forearm portion and a hand portion, and operates by being supplied with driving power from the drive unit.

Abstract: A parallel link robot includes a movable portion, a base, a plurality of drive sources, a plurality of links, and a tension member. The plurality of drive sources is attached to the base. The plurality of links is respectively connected to the plurality of drive sources. The tension member is connected between the movable portion and at least one of the plurality of links such that a bending tension is generated.

Abstract: A parallel link robot includes a plurality of drive units and link units each driven by the corresponding drive unit. Each of the drive units includes a motor, a transmission mechanism that transmits the rotation of the motor to the link unit, and a housing that holds the motor. The housing includes a first connection portion, a second connection portion, and an opening through which the link unit extends. The first connection portion of one of the drive units and the second connection portion of another of the drive units are connected to each other, while the second connection portion of the one of the drive units and the first connection portion of another of the drive units are connected to each other.

Abstract: A guidance robot comprises a driving unit that includes wheels and a motor for moving; a body that is provided on the driving unit and includes sensors for autonomous driving; a display unit that is coupled to the body; a stationary unit that is coupled to the top of the body; a circular rotary unit that has an opening and is provided over the stationary unit to rotate about the central axis of the stationary unit; and a stopper that extends upward from the stationary unit through the opening of the circular rotary unit.

Abstract: A control apparatus of the motor according to one aspect includes: a first feedforward calculator configured to calculate a first motor output torque value so that a torque value indicated by a torque command signal can be generated in a joint part of a robot based on a model of a motor, a decelerator, or a link and the number of rotations of the motor, a second feedforward calculator configured to calculate a second motor output torque value based on the torque value indicated by the torque command signal without depending on the number of rotations of the motor; and a comparator configured to add the first motor output torque value, the second motor output torque value, and a third motor output torque value calculated based on the torque value detected by a sensor and the torque value indicated by the torque command signal.

Abstract: The present disclosure provides a robot servo jitter suppression method and device. The method includes: counting an amount of reciprocating jitter of an angular position of an output shaft of a robot servo in a predetermined period, after the robot servo enters a lock position state for a first predetermined period; determining whether the robot servo is in a jitter state according to the amount of the reciprocating jitter of the angular position of the output shaft of the robot servo and a predetermined fluctuation value; and suppressing the jitter of the robot servo by adjusting control parameter(s) of the robot servo, in response to the robot servo being in the jitter state. The robot servo jitter suppression method and device solve the problem of the jitter of the robot servo appears when the virtual positions of the robot servo and the robot joint structure are not properly controlled.

Abstract: A calibration area has a rectangular area and a peripheral area. The rectangular area includes a center area provided in the center portion and a first corner area, a second corner area, a third corner area, and a fourth corner area that are set at four corners sequentially in the circumferential direction. The center area has a line symmetry with respect to each of the two orthogonal axes passing through the center of the rectangular area. The heights of the areas are different.

Abstract: A measurement system includes a plurality of reflectors of a robot, a measurement apparatus having a laser head which emits a laser beam toward the reflectors and which receives a reflected light from the reflectors, a head driving device which changes orientation of the laser head, and a robot control apparatus which controls the robot based on the calibration operation program and which sequentially places the distal end portion of the robot at a plurality of measurement positions for conducting calibration. The robot control apparatus conducts a head drive control process of receiving controller coordinate data of any one of the plurality of reflectors, which is used at the time of sequentially placing the distal end portion of the robot at plurality of measurement positions, and sending a control signal for changing the orientation of the laser head to the head driving device by using the received controller coordinate data.

Abstract: A system and method for automatically operating a camera includes a controller for controlling the movement of a robotically controlled camera. The controller includes a processor and a computer readable medium having instructions for controlling the camera. The system determines a task to be performed and, based on the determined task, determines a camera control scheme that corresponds to the task. The camera control scheme includes rules for controlling the camera. The system receives input parameters in the form of particular tools being used and the position and movement of the tools. The input parameters can be automatically determined by the controller via a video image produced by the camera. The controller will move the camera in response to particular movement of the tools and the particular rules of the determined control scheme that correspond to the particular movements.

Abstract: Due to rapid advancement in computing technology of both hardware and software, the labor intensive sewing process has been transformed into a technology-intensive automated process. During an automated process, processing of a work piece can be visually monitored using a sensor system. Data gathered from the sensor system can be used to infer the condition and/or position of the work piece in the work area using, e.g., models of a sensor profile. Evaluation can be carried out before processing begins, during processing and/or after processing of the work piece. Examples of systems and methods are described that provide for initially and successively matching the model of the expected shape for a product work piece to a set of sensor readings of the work piece in order to determine the position of the work piece and support a variety of useful features.

Abstract: A carrier system and method carries a plate-like object to an object mounting member provided with an object mounting section. The system includes an adjustment device that changes a shape of the plate-like object into a predetermined shape before the plate-like object is mounted onto the object mounting section. The plate-like object whose shape is changed into the predetermined shape is mounted onto the object mounting section.

Abstract: A drone payload device includes a remote drone arm and a control module. The remote drone are is coupleable to a drone. The remote drone arm includes a base, an arm, and a gripper. The base includes mounting hardware to couple to the drone. The arm extends from the base. The griper is coupled to the arm at an end of the arm distal from the base. The control module is coupleable to a drone controller. The control module is to provide a control signal to the remote drone arm to control a movement of at least one of the arm and the gripper.

Abstract: A mobile robot includes a recessed well in a top surface of the mobile robot, at least one capacitive sensor underlying the recessed well and having a first region and a second region, one or more mobility sensors, and a controller coupled to the at least one capacitive sensor and the one or more mobility sensors. The controller is configured to determine an operating status of the mobile robot responsive to output signals from the one or more mobility sensors, and selectively disregard an input at a first portion of the recessed well corresponding to the first region of the at least one capacitive sensor based on the operating status of the mobile robot.

Abstract: A mirror replacement device includes a gripping mechanism to grip a segment mirror, a fine drive mechanism to change a position and a posture of the gripping mechanism, a lift mechanism for the segment mirror, a first detector to detect a relative position and a relative posture between a comparison object and a target object, a second detector to detect a bend of the fine drive mechanism, and a mirror replacement controller to replace the segment mirror based on detection signals output from the above-mentioned detectors. The controller determines whether the first detector can successfully perform a measurement. When it is determined that the measurement can be successfully performed, the control is performed based on the detection signal output from the first detector. When it is determined that the measurement cannot be successfully performed, the control is performed based on the detection signal output from the second detector.

Abstract: An adaptive control method includes steps of: storing N number of different speed setting values; assigning an i-th one of the speed setting values to serve as a target speed value; sampling, when the gripping module is performing a first action in a steady state period, a feedback voltage signal resulting from the gripping module to obtain Stall Guard Values (SGVs); averaging the SGVs to obtain an average SGV; and calculating, based on the average SGV and a predetermined SGV deviation, a Stall Guard Threshold (SGT) for subsequent control of the electric gripper.

Abstract: According to one embodiment, a holding mechanism includes a first holding part, a second holding part, a first guide, a second guide, a third guide, a fourth guide, and a driving mechanism. The second holding part faces the first holding part in a first direction. The first guide is connected to the first holding part and capable of moving the first holding part in the first direction. The second guide is connected to the second holding part and capable of moving the second holding part in the first direction. The third guide is capable of moving the first guide in the first direction. The fourth guide is capable of moving the second guide in the first direction, and aligned with the third guide in the first direction. The drive mechanism changes a distance between the first holding part and the second holding part.

Abstract: A gripper control device includes a controller, the controller is configured to conduct: a grasp quality evaluation process to obtain a grasp quality contribution degree for each of a plurality of contact positions at which fingers that support the object are in contact with the object; a finger-to-be-moved determination process configured to determine, as a finger-to-be-moved, the finger corresponding to one of the contact positions at which the grasp quality contribution degree is low; and a finger movement control process configured to send a control command to a finger driving apparatus, wherein the grasp quality contribution degree for each of the multiple contact positions is defined using at least one of the following elements: relative positions of the plurality of contact positions related to the object; and friction coefficients between the object and the fingers at the plurality of contact positions.

Abstract: A pneumatic claw-controlling apparatus includes a claw, an air supply, a high-pressure channel, a medium-pressure channel and a low-pressure channel. The claw is normally in an opened position and movable to a closed position by working air. The air supply releases the working gas according to an air-supply signal. The high-pressure channel is operable to adjust the working gas to a high pressure and communicate the air supply with the claw according to a high-pressure signal. The medium-pressure channel is operable to adjust the working gas to a medium pressure and communicate the air supply with the claw according to a medium-pressure signal. The low-pressure channel is operable to adjust the working gas to a low pressure and communicate the air supply with the claw according to a low-pressure signal. The releasing channel is operable to block the claw from the atmosphere according to a vent-stopping signal.

Abstract: Provided is a line-shaped-item securing method including an elastic-body disposing step of disposing an elastic body so as to surround the periphery of one or more line-shaped items; a compressing step of compressing the elastic body, disposed around the periphery of the line-shaped items in the elastic-body disposing step, in a direction perpendicular to the lengthwise direction of the line-shaped items to dimensions smaller than a gap in a robot, through which the line-shaped items are to be passed; a line-shaped-item inserting step of inserting a portion of the line-shaped items, surrounded by the elastic body compressed in the compressing step, into the gap; and an expanding step of releasing the elastic body from compression, with the line-shaped items inserted into the gap in the line-shaped-item inserting step, thereby expanding the elastic body.

Abstract: A longitudinal translatable seal includes a first inflatable compartment extending in a longitudinal direction; a second inflatable compartment extending in the longitudinal direction forming a sealing surface with the first inflatable compartment; and a carriage translatable longitudinally with respect to the sealing surface, and a port in the carriage to fluidly connect a first side of the seal with a second side of the seal.

Abstract: Systems and methods determine locations of moving equipment in an area holding components to be moved. Moving equipment can relocate relative to the holding area to pick up components in the holding area from an origin and deliver them to a desired location or orientation. The moving equipment includes a device emitting a signal that is detectable where it hits components or other structures in a straight line or known path from the moving equipment. A human or computer can determine a position the moving equipment in the holding area from such signals. Devices can operate with visible light generators including LEDs, incandescent or fluorescent bulbs, and lasers and including lenses or reflectors to shape the light into detectable and high fidelity configurations. Automation components including a hardware processor, controller, and detector can operate moving equipment based on detected light, without human interaction or as a verification in human operations.

Abstract: A main isolator 2 (main aseptic device) includes a main connection part 6 having an opening O through which a work space W is externally opened, and an internal opening and closing member 22 configured to open and close an internal opening 21a of the main connection part 6 on the work space W side. A manual incubator 3 (first auxiliary aseptic device) includes a first auxiliary connection part 7 connectable with the main connection part 6 of the main isolator 2, and an automatic incubator 4 and a housing container 5 (second auxiliary aseptic devices) each include a second auxiliary connection part 8 smaller than the first auxiliary connection part 7. In addition, an external blockage member 9 configured to externally block the opening O of the main connection part 6 is provided.

Abstract: An integrally formed rigid razor blade made of martensitic stainless steel includes a cutting edge portion, a base portion, and a bent portion. The cutting edge portion extends along a cutting edge portion axis and has a cutting edge at one end. The base portion extends along a base portion axis. The bent portion is intermediate the cutting edge portion and the base portion. The blade has a concave face and an opposed convex face. An average radius of curvature of the concave face of the bent portion is between 0.4 millimeters and 1 millimeter.

Abstract: Replaceable shaving assemblies are disclosed that include a blade unit, an interface element configured to removeably connect the blade unit to a handle, on which the blade unit is pivotably mounted, and a return element disposed on the interface element. Shaving systems including such shaving assemblies are also disclosed, as are methods of using such shaving systems.

Abstract: A shaving head includes a housing, at least one retainer extending from the housing, and at least one component retained within the housing by the retainer. The retainer includes a body. The body of the retainer is bent such that at least a portion of the components is covered by a portion of the retainer.

Abstract: A tomato dicing assembly and method for making tomato cubes from a tomato includes a cutting guide member, support member, and spike tube member that each has a tubular shape configuration that fit together concentrically. The cutting guide member includes a tubular wall extending longitudinally between proximal and distal ends, the cutting guide member including a cutting member defining a plurality of first cutting slots and body section defining second cutting slots transverse to the plurality of first cutting slots. The support member includes a continuous side wall defining having a closed upper end defining a plurality of holes spaced apart in a predetermined pattern and an open lower end. The spike tube member has a closed top including a plurality of spikes extending outwardly and are received through the plurality of holes when the spike tube member is received into the support member.

Abstract: The device includes a hollow cutting roller with a blade attached to the outer surface of the hollow roller. A stationary shaft is also provided, arranged inside the hollow roller and coaxial therewith. The stationary shaft is connected to a supporting structure and the hollow roller is rotatably supported onto the stationary shaft. A motor drive is provided to rotate the hollow roller around the stationary shaft. The hollow roller is supported onto the stationary shaft by at least a hydrostatic bearing arranged in an intermediate position between the ends of the stationary shaft.

Abstract: An apparatus for producing a microporous plastic film comprising a pair of vertical columns; a pair of stationary frames each fixed to each vertical column such that they are positioned inside the vertical columns; a pair of movable frames rotatable under the stationary frames; a pattern roll rotatably supported by the stationary frames at a fixed position; an anvil roll movable up and down along first vertical guide rails of the stationary frames; and a lower backup roll movable up and down along second vertical guide rails of the movable frames; the pattern roll being in parallel with the anvil roll; the first and second vertical guide rails being distant from the vertical columns on one side, such that rotating movable frames and lower backup roll do not come into contact with the vertical columns; with the lower backup roll inclined to the anvil roll in a horizontal plane, large numbers of fine pores being formed on the plastic film by the high-hardness, fine particles of the pattern roll.

Abstract: A pad supporting frame has a carrier board and a supporting structure. The supporting structure is detachably disposed on the carrier board. The supporting structure is detachably disposed on the bottom surface of the carrier board. In delivery, the carrier board and the supporting structure can be stacked separately for increasing the utilization of the delivery space. Molds of the carrier board and the supporting structure can be made separately for decreasing the volumes of the molds. For cutting a pad disposed on the carrier board, the carrier board can be directly disposed on the tabletop. The carrier board will not be deformed and the cutting quality of the pad is improved.

Abstract: A seed potato cutting system includes a cutting roller unit with an endless roller chain, having a plurality of parallel roller sets, each roller set including a plurality of cylindrical rollers on a common axle, with lateral gaps between adjacent rollers, configured to convey seed potatoes toward a distal end of the roller chain. A plurality of pairs of parallel upright blades are disposed at the distal end, the blades having common rotational axes and a cutting edge that passes within a lateral gap between rollers, each pair of blades having a common adjustable blade gap therebetween.

Abstract: An electrically operated slice cutting machine separates slices from strand-shaped products, such as food products. The machine includes a machine housing, which holds a drive motor and a rotating cutting blade driven by the drive motor. The machine housing has a storage region near the cutting blade. A tray for receiving slices is removably coupled to the machine housing or to an attachment part of the machine housing. The tray is coupled in a horizontal operating position during a cutting operation, and is movable in at least one removal position, in which the tray is configured to be released and removed from the coupling device, when outside of the cutting operation. The coupling device has an upper and a lower coupling arm. Both coupling arms form a coupling recess, which is open on one side.

Abstract: A nick breaking device includes: a conveyor forming a transfer path on which a plate-shaped element having nicks formed thereon is transferred; and one or more pressing rollers provided on the transfer path of the nicks of the plate-shaped element so as to press the plate-shaped element such that the plate-shaped element is transferred while having a continuous wave shape and to break the nicks formed on the plate-shaped element.

Abstract: A chainsaw (100) includes a power unit and a working assembly powered responsive to operation of the power unit. The working assembly includes a guide bar (120) around which a chain is rotatable. The guide bar (120) includes first and second side plates (200 and 210), a sprocket wheel (220), first and second shims (240 and 242), and first and second sealing members (244 and 245). The first and second side plates (200 and 210) each face other and extend away from a housing (110) to a nose. The sprocket wheel (220) is provided at the nose between the first and second side plates (200 and 210). The first and second shims (240 and 242) are disposed between the first and second side plates (200 and 210), respectively, and corresponding ones of first and second sides of the sprocket wheel (220). The first sealing member (244) is disposed between the first shim (240) and the first side of the sprocket wheel (220).

Abstract: An auger includes a body with a first end, a second end opposite the first end, a stem that extends from the first end to the second end and defines an axis of rotation, and a flute helically wrapped around the stem. The auger further includes a shank at the first end of the body configured to be received by a power tool and a cutting head at the second end of the body. The cutting head includes a cutting edge, a spur, and a feed screw with a thread. The thread has a pitch and a nonsymmetrical thread profile. The pitch of the thread is at least 2.5 mm.

Abstract: An arthroscopic or other surgical cutter has features which facilitate fabrication by ceramic molding. The arthroscopic cutter includes a cutter body having a longitudinal axis and a window, an interior channel, and a plurality of cutting edges extending radially outwardly from an outer surface thereof. The features include non-helical, longitudinally aligned cutting edges, controlled thicknesses of the cutting edges, controlled heights of the cutting edges, controlled areas of the windows, controlled diameters of the internal channels, controlled rake angles of the cutting edges, and other parameters.

Abstract: A sprayed article is prepared by thermally spraying ceramic particles of rare earth oxide or fluoride or metal particles of W, Mo or Ta onto an outer or inner surface of a cylindrical carbon substrate to form a sprayed coating, and burning out the carbon substrate, thus leaving the ceramic or metal-base sprayed coating of cylindrical shape having a wall thickness of 0.5-5 mm.

Abstract: The invention comprises a concrete form. The concrete form comprises a first panel having a first primary surface for contacting plastic concrete and a second primary surface opposite the first surface, wherein the first panel is made from a rigid plastic sheet or a metal sheet; and a second panel spaced from the second primary surface of the first panel, wherein the second panel is made from a rigid plastic sheet or a metal sheet. The concrete form also comprises a layer of insulating material disposed between the first panel and the second panel. A method of using the concrete form is also disclosed.

Abstract: An in situ inspection system and method to inspect a honeycomb body (122) skin in a skinning system. The inspection system includes a line illuminator (148) to generate a line illumination on the skin (136) perpendicular to an axial direction (112) of the honeycomb body travel, and a detector (152) to detect the line illumination scattered from the skin (136) and generate a signal based on the detected line illumination. A controller (184) is configured to receive the signal generated by the detector (152), compare the received signal to a previously stored defect free signal in real-time, and control at least one skinning process parameter based on the comparison. The method includes in situ inspecting the skin (136) and controlling at least one skinning process parameter based on the inspection. In the method, the in situ inspection includes illuminating a line of the skin (136) perpendicular to the axial direction (112) and detecting the illuminated line scattered from the skin (136).

Abstract: A concrete mixing system includes a vehicle, a rotatable mixing drum coupled to the vehicle, an incline and/or slump sensor, and a controller. The controller is configured to effect a change of rotational speed of the rotatable mixing drum in response to a signal from at least one of the sensors indicating an increased likelihood of spillage of concrete from the rotatable mixing drum.