Abstract: A commode footstool system and method for abutting a commode includes a commode including a base having a bowl and a seat. A foldable frame is removably abuttable to the bowl of the commode and is positionable from a folded position to an open position. The foldable frame includes a pair of steps facilitating ascending a user of the commode from a floor surface to the seat and provides a footrest of the user when sitting on the seat of the commode when in the open position. The foldable frame includes a pair of front legs and a pair of back legs being pivotally coupled to the steps and supporting a front and a back of the foldable frame upon the floor surface respectively. A pair of offset legs is pivotally coupled to the steps and facilitates pivoting the foldable frame from the folded position to the open position.

Abstract: A self-propelled device includes a body, a walking module, an air extraction module, an air pressure sensor and at least one bumper structure. The body is defined with a first space and a second space in communication with the first space, wherein the volume of the second space is smaller than the volume of the first space and the second space is closer to a side of the body than the first space. The walking module is adjacent to the body. The air extraction module is arranged on the body and is in communication with the first space. The air pressure sensor is arranged on the body and disposed at one end of the second space. The bumper structure is relatively movably arranged on the body, and is configured to close the second space when located at a first position and open the second space when located at a second position. The self-propelled device is for walking on a board surface.

Abstract: A cleaning device includes a handle having a longitudinal axis, a cleaning element movably coupled to the handle, and a flexible conduit fluidly connectable to the cleaning element. The flexible conduit is positionable within an interior of the handle. The cleaning element is movable relative to the handle about a first axis and a second axis when the flexible conduit is fluidly coupled to the cleaning element. The first axis and the second axis are arranged at an angle relative to the longitudinal axis.

Abstract: A filtering pan apparatus for filtering solids out of fluid being removed by a vacuum system includes a base and a duct being coupled to and extending upwardly from the base. The duct has an inlet opening and an outlet opening extending into the duct, with the inlet opening being positioned adjacent to the base. A vacuum connector is coupled to and extends away from the duct and is in fluid communication with the outlet opening. The vacuum connector has a connector opening in a distal end thereof relative to the duct which extends into the vacuum connector. A filtering screen is coupled to and extends upwardly from the base. The filtering screen covers the inlet opening and is liquid permeable.

Abstract: An assembly including a canister. A vacuum is in fluid communication with the canister. A pump having a pump inlet is in fluid communication with an interior of the canister and a pump outlet is in fluid communication with an exterior of the canister. At least one valve is located fluidly downstream of an outlet of the pump and is configured to circulate fluid within the canister in a first position.

Abstract: A tab cleaning apparatus is provided. The tab cleaning apparatus includes: cleaning assemblies, where the cleaning assembly is provided with an air channel inside, and the air channel is provided with an air inlet and an air outlet; and a suction assembly, where the suction assembly is connected to the cleaning assembly, the suction assembly is connected to the air outlet, the suction assembly operates to make air enter the cleaning assembly from the air inlet so as to form a negative pressure zone on the side of the air inlet, and a tab is placed in the negative pressure zone so as to clean the tab. The tab cleaning apparatus of this application can remove metal filings and other impurity particles at tabs, thereby improving the cleanliness of cells, reducing the self-discharge failure rate of cells, and improving the safety of cells.

Abstract: The present invention relates to a flow structure of a companion animal duct collector, and more particularly, to a flow structure of a companion animal duct collector including a main body part that includes an inner case through which air or hair of a companion animal is introduced and an outer case surrounding front and rear surfaces of the inner case and discharging air moving through the inner case to the outside, a suction fan unit that has a motor fan inside the inner case, and a suction grill unit that includes a suction grill coupled to one side of the outer case and sucking in external air by the operation of the suction fan unit, whereby air is collected to the other side of the main body part to form a low pressure part, thereby forming an additional air flow by the operation of the suction fan unit.

Abstract: A cleaner head for a vacuum cleaner, the cleaner head being configured to apply suction to a horizontal surface to be cleaned by the vacuum cleaner, wherein the cleaner head includes: first and second agitator elements each being mounted for rotation about a respective axis. Each agitator element includes a first, free end and a second end, each agitator element has a shape which tapers towards the first end in a direction along the axis of rotation, the first and second agitator elements are cantilevered from opposing sides of a hub portion of the cleaner head at their respective second ends, and each agitator element is arranged such that the position of the axis at the first end of each agitator element is further forwards than the position of the axis at the second end of each agitator element.

Abstract: A floor vacuum cleaner for cleaning a floor surface has a chassis with a chassis frame for traveling over the floor surface. A suction nozzle aspirates an airflow in the region of the floor surface. The suction nozzle is mounted relative to the chassis in the direction of travel to the front left and front right in each case by way of a mounting arrangement formed of a journal and a guide. The mounting arrangement allows a tilting of the suction nozzle about the journals, a rotation of the suction nozzle about a longitudinal axis, and a vertical movement of the suction nozzle, but a movement of the suction nozzle in the longitudinal direction of the chassis is prevented.

Abstract: A vacuum cleaner includes a filtration chamber with an inner wall and an outer wall, an air inlet arranged to feed air carrying dust particles into the space between the inner wall and outer wall of the filtration chamber and a dirt chute for discharging dirt and/or dust from the vacuum cleaner. A tapered filter is located between the inner wall and the outer wall of the filtration chamber. The tapered filter includes a narrow end and a wide end, and the narrow end of the filter is located at or proximate to the air inlet and/or the dirt chute.

Abstract: A vacuum cleaner includes a floor nozzle, a handle, a hand nozzle that can be stored at least partially in the handle, and a backbone between the floor nozzle and the handle. The vacuum cleaner further includes a motor and dustcup on the backbone. Air flow conduits define a first air flow path between the dustcup and the floor nozzle and a second air flow path between the hand nozzle and the dustcup. A flow valve is operable between an open position and a closed position based on the position of the backbone relative to the floor nozzle. When the valve is in the open position, the first air flow path is open to the floor nozzle; when the valve is in the closed position, the first air flow path is closed to the floor nozzle, focusing suction to the hand nozzle.

Abstract: A low-profile dust collector assembly incorporates a low-profile cyclonic separator into a lid for a dust collection bucket. An outer lid ring can be formed of coffers that add strength to the lid and also reduce swirl in the air below the lid. The cyclonic separator has a shell rising from an inner circumference of the lid ring and has a horizontal inlet tube and central vertical outlet tube. A baffle for the separator includes a baffle plate fitted within the inner circumference and a turret of vertical members arranged with a top ring that fits onto the outlet tube. This compact arrangement has improved performance in airflow and dust separation. A spring clamp assists in fitting onto buckets over a range of diameters, and a pair of circumferential gaskets at right angles to one another form an air-tight seal.

Abstract: A filter assembly for use in a vacuum cleaner includes a filter medium including a state-changing material which changes state in dependence on the quantity of liquid to which the filter medium is exposed to provide a first status indication to a user that the filter assembly is suitable for use in the vacuum cleaner when the state-changing material is in a first state and a second status indication to the user that the filter assembly is not suitable for use in the vacuum cleaner when the state-changing material is in a second state.

Abstract: A cleaner including a body, a dust case, a shaft, a motor to rotate the shaft, and an impeller that rotates by the rotation of the rotation shaft by the motor to generate a suction force for suctioning air into the body from the dust case through an air passage, the impeller including: a boss portion fixed to the shaft, a base portion extended from the boss portion and having a diameter that increases from an intake side toward a discharge side of the air passage, and a plurality of blades on the base portion, each blade including: a wind cutting edge having a proximal end, and a protruding end, is behind the proximal end in a rotation direction of the impeller, and is closer to the intake side than the boss portion and a wind sending edge that is farther from the boss portion than the wind cutting edge.

Abstract: The vacuum cleaner conduit includes first and second rigid conduit parts; a hinge device configured to allow a pivoting of the first and second rigid conduit parts between unfolded and folded configurations; a locking member configured to lock the first and second rigid conduit parts in the unfolded configuration, the locking member being movably mounted between locking and release positions; and an unlocking button slidably mounted between a rest position and an unlocking position, and configured to displace the locking member into the release position. The unlocking button and the hinge device are located on the same side of the vacuum cleaner conduit which is substantially diametrically opposite to the side of the vacuum cleaner conduit where the locking member is located.

Abstract: The vacuum cleaner conduit includes first and second rigid conduit parts a hinge device configured to allow a pivoting of the first and second rigid conduit parts about a hinge axis and between unfolded and folded configurations; a locking member configured to lock the first and second rigid conduit parts the unfolded configuration; and an unlocking member including two lateral gripping parts located on either side of one of the first and second rigid conduit parts, each of the lateral gripping parts being intersected by a plane parallel to the hinge axis and containing a central longitudinal axis of the vacuum cleaner conduit in the unfolded configuration of the first and second rigid conduit parts.

Abstract: A surface cleaning apparatus includes a controller coupled to a sensor or a set of sensors that collects and transmits data to a remote computing device. The surface cleaning apparatus can use wireless or networking technology with a protocol for wireless communication with the remote computing device. The remote computing device is configured to identify an event at the surface cleaning apparatus and/or a change in the cycle of operation of the surface cleaning apparatus based on the transmitted data. Sensor data can be transmitted from the remote computing device to a different surface cleaning apparatus.

Abstract: A material collection system is provided. The system can include a vehicle, a conduit, a vacuum generator mounted to the vehicle to develop an airflow and to draw material into the conduit, and a moveable boom mounted to the vehicle to support the conduit. The system can include a control system to control a speed of the vacuum generator.

Abstract: The present disclosure relates to a cleaner including a cleaner main body including a battery and a handle configured to be grasped by a user, a cleaning module detachably coupled to the cleaner main body and configured to eliminate debris on a floor surface, an auxiliary battery housing detachably coupled to the cleaning module, and an auxiliary battery detachably coupled to the auxiliary battery housing and configured to supply power to the cleaner main body or the cleaning module, thereby allowing a user to easily manipulate the cleaner while supplying additional power from the auxiliary battery.

Abstract: A cleaning robot includes a cleaning element, which is configured to be in contact with a surface to be cleaned and form a chamber with the surface to be cleaned; a suction module; a driving module, which is connected with the cleaning element and drives the cleaning element to rotate with the axis perpendicular to the surface to be cleaned as the rotation axis; a controller, which is coupled to and controls the suction module and the driving module; and a bridge, which connects a plurality of cleaning elements and the driving module, wherein at least one of the cleaning elements is configured to be able to deflect with respect to the bridge, so as to enable the rotation axis corresponding to the cleaning element to be staggered with the rotation axes corresponding to other cleaning elements to form an included angle.

Abstract: A method of operating an autonomous cleaning robot includes presenting, on a display of a mobile device, a representation of each of multiple cleaning levels, each cleaning level corresponding to a respective rank overlap parameter for a wet cleaning mission of the autonomous cleaning robot. The method includes receiving, at the mobile device, an input indicative of a selection of one of the cleaning levels; and controlling the autonomous cleaning robot to execute a wet cleaning mission according to the rank overlap parameter corresponding to the selected one of the cleaning levels.

Abstract: A cleaner including a wet cloth brush to which a pad is installable so as to be below a bottom surface of the wet cloth brush, the wet cloth brush including a pad motor configured to rotate a pad installed to the wet cloth brush, a water supplier configured to spray water to a surface to be cleaned, a light source configured to irradiate light to the pad installed to the wet cloth brush, and a processor configured to, based on an intensity of the light reflected from the pad, control a rotation speed of the pad motor, and/or control an amount of water sprayed by the water supplier to the surface to be cleaned.

Abstract: The present invention relates to an accessory for a polishing machine, suitable for the incorporation thereof in a polishing machine comprising a plurality of blades, characterized in that it comprises abrasive means and magnetic means, wherein the abrasive means and the magnetic means are mutually fitted out so as to be mutually fixable, the magnetic means in turn being fitted out for the incorporation thereof in the blades, with the abrasive means thereby being incorporated in the blades through said magnetic means, and with the same blades also being suitable and having movement capacity to allow floor polishing by means of the abrasive means incorporated therein.

Abstract: A method of engaging a dispensing package with a dispensing system. The dispensing system includes a cradle movable from a first position to a second position. The dispensing system also includes a sliding lock that includes an open frame and a plurality of latches extending from the open frame. An inlet canula protrudes through the cradle when the cradle is in the second position. The dispensing package includes a coupling shell. The coupling shell includes a front aperture in the top wall thereof. The dispensing package is fitted to the cradle which is in the first position and pushed downwardly. The inlet canula punctures the membrane seal of the and the latch engages with the front aperture hold the dispensing package in the dispensing system.

Abstract: A base station of a cleaning device and a cleaning system are provided. The base station of the cleaning device includes: a base station body having an accommodating chamber for accommodating the cleaning device and an opening for the cleaning device to enter or exit the accommodating chamber; and a water injection assembly including a movable base, and a movable plate, a lifting mechanism, and a water injection pipe that are disposed on the movable base. The water injection pipe is configured to inject water into the cleaning device. The lifting mechanism is configured to drive the water injection pipe to move. A first elastic member is disposed between the movable plate and a side wall of the accommodating chamber. The cleaning device is contacted with the movable plate during a water injection process of the water injection assembly.

Abstract: An accessory tool for an extraction cleaner having an accessory hose, a fluid delivery system, and a fluid recovery system includes a lens, a tool body, a spray tip, and a cleanout assembly. The tool body is connectable to the fluid delivery system and the fluid recovery system via the accessory hose. The lens couples to the tool body to form a suction nozzle volume therebetween. The tool body defines a fluid channel opposite the lens. The spray tip dispenses a cleaning fluid from the fluid delivery system onto a surface during a spray cycle of the extraction cleaner. The cleanout assembly selectively diverts the cleaning fluid from the spray tip and into the suction nozzle volume via the fluid channel during a clean out cycle of the extraction cleaner to thereby clean the lens and the accessory hose.

Abstract: A surface cleaning tool includes a handle body having a first longitudinal axis and a head configured to receive a wiper blade. A plane extending through a center of the head, parallel to the wiper blade, includes a second longitudinal axis of the head. The head is movable along a path of movement relative to the handle body. An orientation of the plane of the head remains constant relative to the longitudinal axis as the head moves along the path of movement.

Abstract: A dispensing system for a floor treatment composition. The dispensing system includes a housing partially enclosing a cavity and a cradle moveable within the housing along a z-axis from a first position to a second position. The dispensing system further includes a chassis and a sliding lock that includes an open frame. An inlet canula projects through the open frame. When the cradle is in the second position, the inlet canula entrance projects through the open frame and through a liquid transport aperture in the cradle. Latches extending from the open frame also project through engagement apertures in the cradle when the cradle is in the second position. The dispensing system further includes a pump in fluid communication with the inlet canula and a mop head in fluid communication with the pump.

Abstract: The broom and dust pan combination with the broom has an elongate handle and at least one offset connection attached to a bristle head to define a gateway atop the bristle head. The dust pan has at least one telescoping pivotal arm for connection to any one of the a) offset connection, b) handle, and c) bristle head, for moving the dust pan from an upright position atop the bristle head to a position lying in front of the broom and back again to the position atop the bristle head.

Abstract: A control method for a water diversion device, a water diversion device and a dishwasher. The control method for a water diversion device includes: acquiring a target state position to be reached by a water diversion piece; acquiring the current state position of the water diversion piece; controlling a driving component to operate, and counting the number of signals actually received; on the basis of the target state position, the current state position and the number of signals actually received, determining whether the water diversion piece has reached the target state position; and when the water diversion piece has reached the target state position, controlling the driving component to stop rotating.

Abstract: A control panel for an appliance includes a printed circuit board defining a top surface, a light source mounted to the top surface of the printed circuit board for selectively generating light, a control cover mounted to the top surface of the printed circuit board, the control cover comprising a bottom surface, a top surface, and an indicator zone, the control cover defining light diffusion channel extending into the bottom surface of the control cover, and a light diffuser extending into the light diffusion channel to define a light recess configured to receive the light source, light recess being offset from the indicator zone by a diffusion distance measured perpendicular to an illumination direction.

Abstract: An appliance, system, and method for operating an appliance and determining presence of water softener at water provided to an appliance is provided. The system is configured to obtain a first water hardness value; obtain a second water hardness value based on a location of the appliance; determine a ratio of the first water hardness value and the second water hardness value; compare the ratio of the first water hardness value and the second water hardness value to a threshold limit; transmit a first water hardness signal when the threshold limit is exceeded, wherein the first water hardness signal corresponds to the first water hardness value; transmit, to the database storage device, a second water hardness signal when the ratio is within the threshold limit; and adjust operation of the appliance based on whether the first water hardness signal or the second water hardness signal is transmitted.

Abstract: An appliance, system, and method for operating an appliance is provided. The appliance, system, and method are configured to execute operations including determining when a dispensing device for a detergent meets or exceeds a detergent level threshold, determining if a first wash mode corresponding to a performance wash mode is activated, and changing operation from the first wash mode to a second wash mode corresponding to an efficiency wash mode when the dispensing device meets or exceeds the detergent level threshold and the first wash mode is activated.

Abstract: A dishwasher detergent dispenser having a set of restraints configured to retain a detergent tablet in a cavity of the detergent dispenser, and a water outlet configured to release water to a top section of the detergent dispenser.

Abstract: A dish rack for cleaning reusable plastic dishware can include a bottom support wall, a sidewall defining an outer frame, and a cover positionable over the bottom support wall. In some examples, the dish rack includes spaced-apart prongs extending upwardly from the bottom support wall. In use, an operator can load reusable plastic dishware on or between the prongs of the dish rack and close the cover. This can enclose the reusable plastic in a space bounded between the bottom support wall, the sidewall defining the frame, and the cover. Once loaded, the operator can insert the dishrack into the dishwasher to clean the reusable plastic dishware while retained in the dish rack. The dish rack can allow the reusable plastic dishware to be properly cleaned while minimizing or eliminating problems associated with the comparatively light reusable plastic dishware moving in response to high pressure water within the dishwasher.

Abstract: Disclosed herein is an endoscope imaging system including an endoscope configured to capture one or more images, the endoscope in communication with a laser system and a display, and a console, in communication with the endoscope, the laser system and the display, the console configured to receive one or more parameter settings from the laser system, receive the one or more captured images from the endoscope, generate one or more icons corresponding to the parameter settings and overlay the icons on the captured images depicted on the display.

Abstract: In the endoscopic examination support apparatus, the image acquisition means acquires an endoscopic image taken by an endoscope. The first lesion detection means detects a lesion candidate from the endoscopic image, using a machine learning model that learned a relationship between the lesion candidate and a normal state of a large intestine. The second lesion detection means detects a lesion candidate from the endoscopic image, using a machine learning model that learned a relationship between the lesion candidate and a predetermined state of the large intestine. The output means outputs at least one of a detection result of the first lesion detection means and a detection result of the second lesion detection means.

Abstract: A medical visualisation system including a medical visualisation device having: an image sensor configured to generate image data, a light emitter, a device processing unit configured to receive the image data from the image sensor and encode the image data to provide encoded image data based on the image data, and a device wireless transceiver configured to communicate with a monitor wireless transceiver of a monitor device, the device wireless transceiver being configured to receive the encoded image data from the device processing unit and transmit the encoded image data using a downstream data channel from the device wireless transceiver to the monitor wireless transceiver and to receive settings data using an upstream data channel from the monitor wireless transceiver to the device wireless transceiver.

Abstract: Errors in a blended stream that would result in non-display or obscuring of a live video stream from a medical device may be automatically detected, and a failover stream corresponding to the first live video stream may be displayed to medical personnel. For example, one or more second input streams that are being blended may contain no data or invalid data which may result in the blended stream not displaying (or obscuring) the live video stream (if the blended were displayed). Switching from blending to a failover buffer may occur within the time to process a single video image frame. Upon detection (prior to display) that the blended stream would not display the live video stream, display of the live video stream from the failover buffer may be initiated. Other aspects are also described and claimed.

Abstract: A valve assembly with improved sealing. The valve assembly may be configured for use as a suction valve assembly. The valve assembly includes a valve well, and a valve shaft movable with respect to the valve well to shift the valve assembly between off and on configurations. A cylindrical sealing member is circumferentially positioned about the valve shaft to seal around a transverse port extending transversely through the valve shaft and in fluid communication, via a channel within the valve shaft, with an axial port at an end of the valve shaft. The cylindrical seal member seals the transverse port of the valve shaft (and a transverse valve well port in fluid communication therewith) from fluid communication with the axial port of the valve shaft (and an axial valve well port in fluid communication therewith) when the valve shaft assembly is within the valve well.

Abstract: In some embodiments, systems, methods, and media for capsule-based multimode endoscopy are provided. In some embodiments, a probe for capsule-based multimode endoscopy is provided, the probe comprising: a rigid capsule; a flexible tether coupled to a proximal end of the capsule; a rotatable reflective surface disposed within the capsule; a static ball lens disposed within the capsule; a first optical fiber optically coupled to the ball lens, the first optical fiber passing through the flexible tether; a second optical fiber optically coupled to the ball lens, the second optical fiber passing through the flexible tether; a graded index fiber disposed between a distal end of the second optical fiber and the ball lens, the graded index fiber optically coupled to the second optical fiber and the ball lens.

Abstract: An endoscope cable includes a plurality of individual cables, and is provided with an entire shield portion including a metal wire group having an electric shield function to surround entirety of the plurality of individual cables, and a cable core wire including a metal wire group in each of the individual cables. The metal wire group in at least one of the entire shield portion and the cable core wires is configured by combining a plurality of types of metal wires having different compositions from each other.

Abstract: A method for holding a rigid endoscope with an endoscope holding member includes holding the rigid endoscope with an attachment and holding the attachment with the endoscope holding member, the attachment configured to be held at the oblique angle by the endoscope holding member. A method for holding a flexible endoscope with an endoscope holding member includes holding the flexible endoscope with the endoscope holding member, the flexible endoscope configured to be held at the oblique angle by the endoscope holding member. This endoscope holding member has a polygonal shape and/or an ellipsoid shape or a shape that is a combination of these, and has at least one hole that can hold an attachment endoscope at an oblique angle.

Abstract: A nasal anchor configured to maintain a tube of a laryngoscope in the nostril of a patient. The anchor is a cylindrical device formed of compressible foam. The device includes a longitudinal channel that is sized and shaped to grasp a laryngoscope tube. The channel is accessible through a slit. The device can be inserted onto the tube of a laryngoscope and compressed to a size sufficiently small to fit into a nostril. Once in the nostril, the anchor expands to maintain the tube secured within the nostril.

Abstract: An endoscope system includes: an endoscope; a moving device that holds and moves the endoscope; and at least one processor. The at least one processor is configured to: detect a movement direction of the endoscope moved by the moving device in a coordinate system of the moving device; estimate an area of a moving body in an image captured by the endoscope; detect a movement direction of an object in the image on the basis of another area in the image excluding the area of the moving body; calculate a deviation between a coordinate system of the endoscope and the coordinate system of the moving device on the basis of the movement direction of the endoscope and the movement direction of the object; and correct the coordinate system of the moving device on the basis of the deviation.

Abstract: A guide tube of the embodiment includes a long tube main body to be inserted into a body, and a handle part provided on a proximal end side of the tube main body, in which the handle part includes an inner sheath to which a proximal end part of the tube main body is connected and a protection sheath externally inserted into the inner sheath, and the inner sheath includes a port part for supplying and discharging a fluid to and from the tube main body.

Abstract: Provided is a folding endoscope, including a head connecting pipe and a tail connecting pipe that is detachably connected through a threaded structure, wherein a connecting line is sleeved between inner cavities of the head connecting pipe and the tail connecting pipe; a camera assembly is mounted at one end, away from the tail connecting pipe, of the head connecting pipe; one end of the connecting line is electrically connected to the camera assembly; an aviation plug is fixedly mounted at one end, away from the head connecting pipe, of the tail connecting pipe; the aviation plug is electrically connected to the connecting line; and a clamping sleeve is slidingly clamped on the head connecting pipe.

Abstract: The present invention relates an endoscope, including: a bendable section configured to be inserted into a subject's body to collect image information; and a power transmission means configured to transmit power provided by the power source to the bendable section, wherein the power transmission means comprises a power-transmitting mechanical cord and a friction control part configured to promote or restrain a movement of the mechanical cord.

Abstract: An endoscope including a handle; and an insertion cord including a bending section made from one or two pieces of polymer material; the bending section including: bending segments and bendable hinges keeping together the bending segments, the hinges each having a specific hinge length; the bending section having a portion in which the hinge length predominantly increases from a proximal end segment of said portion to a distal end segment of said portion; and the portion including at least one trigger point formed by an abrupt increase in the hinge length.

Abstract: A distal end body of an endoscope includes: an outer portion defining an internal space and including a partition, the partition having a first through hole, the partition partitioning the internal space into a first space and a second space; a first sealing portion including a second through hole, the first sealing portion being fitted in the first through hole in a state of protruding from the first through hole toward the first space; and an inner portion being fitted in the second through hole.