Abstract: An assembly structure of a chair includes: a chair frame having a front bar, a rear bar, a first side bar and a second side bar; and a chair seat detachably assembled with the chair frame and having a seat portion, a front engaging portion disposed at a front end of the seat portion to engage with the front bar, a rear engaging portion disposed at a rear end of the seat portion to engage with the rear bar, a first abutting portion disposed at one side of the seat portion to engage with and abut against the first side bar, and a second abutting portion disposed at another side of the seat portion to engage with and abut against the second side bar.

Abstract: This application relates to inflatable flotation devices that support an infant, and having first, second and third inflatable members. The first member has an outer and an inner perimeter and a first and second diameters at first and second end portions. The second member is at least partially within the inner perimeter of the first member. At least a portion of the upper surface of the second member is recessed with respect to an upper surface of the first member. The third member has an inner perimeter disposed about at least a portion of the outer perimeter of the first member. The third member has a maximum height, when inflated, that is less than the maximum height of the first member, at least a portion of the inner perimeter of the third member being spaced apart from the outer perimeter of the first member.

Abstract: An electromotively adjustable support device 2 for a cushioning of a seating and/or lying furniture, in particular a mattress of a box-spring bed, comprises a first support part 12, to which a second support part 14 is pivotally connected, to whose end facing away from the first support part 12 a third support part 16 is pivotally connected. A pivot lever 28 pivotally disposed around a pivot lever pivot axis 30 serves to pivotally adjust the second support part 14 relative to the first support part 12. According to the invention, the second support part 14 comprises a guiding 32 for the end of the pivot lever 28 facing away from the pivot-lever-pivot-axis 30, wherein the guiding 32 carries an adjusting means for pivotally adjusting the third support part 16 relative to the second support part 14.

Abstract: A bed includes a bed frame supported, in a starting position, via bed legs on a standing surface. A lifting device for lifting the bed between the starting position and a high position, has pivot mechanisms arranged on opposing sides of the bed frame, each provided with a lower frame part, an upper frame part mounted on the bed frame, and two levers pivotably connected to both the lower and upper frame part in the manner of a parallelogram mechanism. The lifting device includes at least one electric actuator for actuating the pivot mechanisms. In the starting position, the pivot mechanisms have no contact with the standing surface, while they are supported on the standing surface in the high position and hold the bed frame including the bed legs at a distance from the standing surface.

Abstract: A bed system can have an adjustable foundation and a user interface having at least one adjustment bar. The user interface can be communicatively coupled to an actuation system of the adjustable foundation such that raising a foot portion of the at least one adjustment bar can signal the actuation system to raise a foot section of the adjustable foundation, raising a head portion of the adjustment bar can signal the actuation system to raise a head section of the adjustable foundation, lowering the foot portion of the adjustment bar can signal the actuation system to lower the foot section of the adjustable foundation, and lowering the head portion of the adjustment bar can signal the actuation system to lower the head section of the adjustable foundation.

Abstract: A rotating under-bed storage unit is disclosed in which a drawer is mounted under a bed frame and bears a rotating circular platform within. The drawer with the circular platform is configured to be flush with the margin of the bedframe. When the platform is not in use, it does not extend beyond the bed frame and is therefore out of the way. However, upon sliding the drawer out, the circular platform is exposed and the stored contents of the platform are visible and accessible. The platform is rotated until the desired stored item is located. The drawer is then slid back into its closed stored position. Disclosed are multiple variations of rotating under-bed storage units contained in drawers. These variations shown utilize sliding supports, platforms of various sizes, shapes, structural and aesthetic features.

Abstract: Described are bed systems having a headboard, backward facing lights positioned at a back side of the headboard, and a controller operably connected to the backward facing lights that can drive the backward facing lights to provide circadian lighting. The backward facing lights can be recessed into the back side of the headboard. The backward facing lights can provide ambient lighting when controlled by the controller. The controller can determine when a user of the bed system is waking up and control the backward facing lights to provide circadian lighting that corresponds to a wakeup routine for the user. The controller can also determine when the user is going to sleep and control the backward facing lights to provide circadian lighting that corresponds to a sleep routine for the user. The backward facing lights can be LED strips positioned inside an extruded channel in the back side of the headboard.

Abstract: An air system for a bed can include a layer assembly having a head end, a foot end, and first and second sides, with a head portion near the head end, a foot portion near the foot end, and a middle portion between the head portion and the foot portion, the layer assembly. The layer assembly can have a spacer layer comprising spacer material configured to allow for air flow through the spacer material and a cover comprising a cover top layer and a cover bottom layer. The air system can have a distribution manifold that is substantially fan-shaped with a plurality of ribs defining channels and/or is positioned above the cover bottom layer and under the spacer layer. The air system can have first and second flaps with first and second retention features extending from the head and foot ends of the air layer.

Abstract: A mattress incudes a core and an encasement sized and shaped to receive the core. The encasement includes a first end, a second end, a first side, a second side, an upper portion, a lower portion, an interior portion, an opening at the first end and in communication with the interior portion, and a flap at the first end. The flap is moveable from an open position, in which the flap is outside of the opening, and a closed position, in which the flap is within the opening. The flap overlays at least a portion of the core when the flap is in its closed position.

Abstract: An elastic unit, an elastic assembly, and an elastic mattress are provided. The elastic unit comprises a base comprising a first end and a second end opposite to the first end in a length direction of the base and a plurality of elastic modules disposed between the first end and the second end of the base. The plurality of elastic modules are detachably disposed on the base, and the elastic unit comprises at least one bottom opening to enable at least one of the plurality of elastic modules to be sleeved on an upper surface of at least one of a plurality of elastic modules of another one elastic unit.

Abstract: A mattress and a bed. The mattress comprises: a support layer assembly (10), wherein the support layer assembly (10) is embedded with a pipe channel (11); an airbag assembly (20), wherein the airbag assembly (20) is located on the support layer assembly (10); and a pipe assembly (30), wherein the pipe assembly (30) is arranged at least partially passing through the pipe channel (11) and is in communication with the airbag assembly (20). The mattress and the bed effectively solve the problem of poor comfort of a mattress due to the fixation of an air pipe in the related art.

Abstract: A mattress is disclosed. The mattress includes a support layer, a comfort layer arranged supported on the support layer and a support structure sandwiched between the support layer and the comfort layer. The support structure includes a plurality of first bars extending in a longitudinal direction and arrayed in a lateral direction and at least one second bar coupled to the plurality of first bars and supported on the plurality of first bars. The at least one second bar extends in the lateral direction and is configured to facilitate a flexing of the plurality of first bars in convex shapes when a person lies on the mattress to support a lumbar region of the person.

Abstract: The multi-wheel display assembly includes a lower display portion having a circular configuration in a horizontal plane and an upper display portion having a circular configuration in a horizontal plane that is displaced upwardly from the lower display portion by a plurality of support rods, each display portion including a plurality of planetary and orbital gears each having a peripheral edge and teeth appropriately engaged for rotation of the gear systems. Specifically, the display assembly includes a gearing system with a central drive gear, multiple planetary-gears, and a third layer of orbiting gears that each have a horizontal side wall for holding a display article such as a mug or food item and which remains level even as respective gears revolve. The orbiting gears and the planetary gears are radially arranged along concentric circumferential paths and connected to the central drive gear through complementary rotational movements and complementary gear teeth.

Abstract: A system for displaying a wheel that includes a shelf unit that can be mounted on the wall. The shelf unit includes a shelf upon which an inner perimeter of the wheel may be supported. The outer end of the shelf unit is reinforced against a downward force by a diagonal member from the bottom end of the shelf unit to the outer end of the shelf. A retainer clip is inserted into the shelf unit and prevents the wheel from sliding off of the shelf.

Abstract: A surface couplable pillow decoration assembly for coupling to a surface includes a pillow having an exterior wall enclosing an interior space. The exterior wall includes a front wall, a back wall, and a perimeter wall positioned from the front wall to the back wall. A filling is stored within the interior space. A support is coupled to the back wall of the pillow and is positioned within the interior space. A coupler is coupled to the pillow and is removably coupled to a surface, wherein the coupler removably couples the pillow to the surface.

Abstract: The present disclosure describes a device including a wall protruding from and surrounding a base portion and an open top portion located opposite the base portion. The device may define a volume corresponding to a predetermined macronutrient quantity for a food type. Also described is a kit including a first bowl and a second bowl. In some examples, the first and second bowls each include a wall protruding from and surrounding a base portion and defining an open top portion located opposite the base portion. According to some examples, the first bowl defines a first volume corresponding to a predetermined macronutrient quantity of a first food type and the second bowl defines a second volume corresponding to a predetermined macronutrient quantity of a second food type that is different from the first volume corresponding to the predetermined macronutrient quantity of the first food type.

Abstract: A foldable eating utensil includes a cutlery head, a first rod, and a second rod that are sequentially connected. A neck of the cutlery head connected to the first rod has a restricting portion corresponding to the neck. When the second rod is folded toward the first rod, the second rod is restricted by the restricting portion from leaving the first rod. When the cutlery head is folded toward the compacted first and second rods, the cutlery head is restricted by the same restricting portion for retaining the second rod. Since the second rod is restricted by the restricting portion, during a process of folding the compacted first and second rods toward the cutlery head by an automatic machine, the work of the automatic machine is not be hindered by the second rod leaving the first rod. Therefore, the foldable eating utensil is suitable for automated packaging.

Abstract: Crockery system comprising at least one serving dish (130), at least one form-flexible package comprising liquid thermal buffer material (120), and at least one optionally form-retaining package comprising phase-change material (110), wherein the at least one package comprising thermal buffer material is in thermal contact on the upper side thereof with the at least one serving dish and is in thermal contact on the underside thereof with the at least one package comprising phase-change material.

Abstract: Provided is a carpet comprising a textile top member, which includes carpet yarns and a nonwoven primary backing that is coupled with the carpet yarns so that the primary backing structurally supports the carpet yarns. The nonwoven primary backing includes reinforcement fibers deposed in the nonwoven primary backing. The reinforcement fibers are configured to mechanically reinforce and stabilize the carpet yarns. A secondary backing is coupled with the textile top member via a thermoplastic material. The carpet can be a carpet tile or a carpet rug.

Abstract: Provided is a carpet comprising a textile top member, which includes carpet yarns and a nonwoven primary backing that is coupled with the carpet yarns so that the primary backing structurally supports the carpet yarns. The nonwoven primary backing includes a scrim reinforcement. The scrim reinforcement is configured to mechanically reinforce and stabilize the carpet yarns. A secondary backing is coupled with the textile top member via a thermoplastic material. The carpet can be a carpet tile or a carpet rug.

Abstract: A carpet pad includes a top hook layer and a bottom anti-slip layer. An upper surface of the hook layer is provided with protruding monofilaments in a bent shape. Top ends of the protruding monofilaments are provided with bumps formed by melting/softening and then cooling the protruding monofilaments. The protruding monofilaments on the hook layer are heat-treated to make their top ends melted/softened into the small bumps. The heat-treated protruding monofilaments have a certain degree of curvature and inclination, and thus can firmly hook with various carpets above and provide a large friction force, in particular in a vertical direction. The length and density of the protruding monofilaments are reasonably designed to make the protruding monofilaments well hook and lock with the carpet above. In addition, the protruding monofilaments touch soft, and the bumps are not prickly.

Abstract: A mat comprises a cover detachably fastened to a base pad, where the cover may be removed for washing and/or replacement. The cover may be made of a durable fabric while the base pad may be made of rubber or similar material. The base pad may comprise a number of holes through each of which a two-part fastener may be attached. A portion of hook and loop material (or another type of material intended to attach tightly to the cover) may be affixed to the portions of the fasteners oriented toward the cover so as to enable the mat to be detachably fastened to the cover.

Abstract: A holiday apparatus, comprising an inflatable egg shaped globe having an equatorial circumference of between 6 inches and 120 inches and a height of between 6 inches and 60 inches, an aperture that traverses the wall of the inflatable egg shaped globe, the aperture allowing ingress into and egress from the interior of the inflatable egg shaped globe; and a closure mechanism that securely couples to the aperture into the inflatable egg shaped globe operable to retain air in the inflatable egg shaped globe when closed.

Abstract: Disclosed herein is a flat kettle having a vacuum interlayer, the flat kettle including an outer shell and an inner container, wherein the outer shell has a first chamber, and the lower end of the inner container is suspended in the first chamber; the inner container includes a container shell and an interlayer shell, the interlayer shell has a second chamber, the container shell has a third chamber, the container shell is suspended in the second chamber and seals the second chamber, the second chamber is vacuum, and the third chamber is in communication with the outside. According to the present invention, the inner container is located inside the outer shell, and the inner container is not required to be polished, so that the reduction of the heat insulation effect due to vacuum leakage caused by abrasions caused by polishing can be avoided.

Abstract: Containers are provided for use with a beverage dispensing device. The container can include a housing defining a hollow interior and having an opening leading to the hollow interior, a cover coupled disposed over the opening, an inlet leading to the hollow interior, and an outlet spaced apart from the interior. The inlet and outlet can each have valves movable between open and closed positions for allowing fluid flow into and out of the hollow interior.

Abstract: There is disclosed herein a coffee bean grinding apparatus including: a transmitter for emitting a signal; a receiver for receiving at least a portion of the signal; a hopper for containing coffee beans, wherein at least a portion of the coffee beans contained by the hopper is located between the transmitter and receiver; a grinding mechanism for grinding coffee beans fed by the hopper; and a controller, in electrical communication with the transmitter, the receiver and the grinding mechanism, configured to: receive, from the receiver, a measurement indicative of a proportion of the signal received from the transmitter; determine, based on the measurement, whether the hopper contains at least a threshold amount of coffee beans; and in response to determining that the hopper contains less than the threshold amount of coffee beans, perform one or more detection functions.

Abstract: A beverage dispensing machine includes a beverage dispensing head whose position relative to a container receiving area can be adjusted, and a receiving structure for the dispensing head having a first slide and a second slide designed to interact with a respective lateral side of the dispensing head to form a first slide connection and a second slide connection, respectively. The receiving structure also includes a third slide, positioned between the first and second slides and designed to interact with the dispensing head to form a third slide connection. The third slide is closer to the receiving area along the longitudinal axis than the first slide and the second slide.

Abstract: A beverage preparation device for preparing a beverage with a single serve capsule that includes: a base element and a periphery projecting laterally from the base element, a lid film fastened to the periphery, a beverage raw material disposed in the cavity, and an identification mark on a side of the periphery that faces away from the lid film; the beverage preparation device including a brewing chamber configured to receive the capsule; the brewing chamber including a first brewing chamber element and a second brewing chamber element which are movable relative to one another; the beverage preparation device including at least one detection means configured to detect the identification mark; the brewing chamber and the single serve capsule are configured to be non-rotating during preparation of the beverage and in the open position and/or the closed position, is configured so that the capsule is pivotable and/or rotatable.

Abstract: A beverage brewing system with a beverage server and a brewer. The beverage server includes an information device to store a beverage recipe. The brewer includes a communication device to wirelessly read the recipe from the beverage server. During the brewing process, the brewer reads the recipe from the beverage server and sends control signals to create a brewed beverage according to the beverage recipe.

Abstract: Provided is a cooking appliance. The cooking appliance includes a pot assembly, a pot lid assembly, and a first food container and a second food container. The pot assembly defines an accommodation chamber and is provided with a heating assembly. The pot lid assembly is provided with a fan assembly. One of the first food container and the second food container is placed in the accommodating cavity. When the cooking appliance is in a first cooking mode, the first food container is placed in the accommodation chamber; and when the cooking appliance is in a second cooking mode, the second food container is placed in the accommodation chamber. The second food container has a cooking cavity in communication with the accommodation chamber.

Abstract: A cooking system positionable on a support surface including a housing including at least a top wall, bottom wall, and side walls, said housing defining a hollow chamber including a cooking chamber and a convecting chamber. A convection heater is disposed within the convecting chamber. At least one fluidly communicable opening extends between the convecting chamber and the cooking chamber. The at least one fluidly communicable opening fully extends between the top wall and the bottom wall of the housing.

Abstract: The present disclosure discloses a wind guard of a griddle, including a main wind guard, wherein the main wind guard is provided with a magnetic member; the magnetic member is configured to be magnetically sucked on a baking tray or a seat body to enable an upper part of the main wind guard to cover the baking tray and enable a lower part of the main wind guard to cover the seat body; the main wind guard is provided with an air inlet; the air inlet penetrates through a first side surface and a second side surface of the main wind guard; the air inlet is arranged between upper part of the main wind guard and the lower part of the main wind guard to stagger the baking tray from the seat body.

Abstract: A coffee grinder with an electric motor has a control of the amount of dispensed coffee for each dose of ground coffee. Such control is achieved by providing a calibration step and operating alternately according to a first mode of adjusting the period of activation of the electric motor, in which the calibration step is carried out by having the operator vary manually the period of activation of the electric motor, or a second mode of adjusting the period of activation of the electric motor by carrying out the calibration step automatically by comparing the desired weight of ground coffee and the weight of ground coffee that is actually dispensed into the filter holder, and by measuring with a scale or other weighing device that is physically disconnected from the grinder.

Abstract: A blade assembly for a blender. The blade assembly may include one or more blades. The blade assembly may include one or more bushings. The blade assembly may include one or more washers. The blade assembly, or portions thereof, may travel along a portion of the shaft between elevations. A tamper may used to adjust the elevation of the blade assembly, or portions thereof.

Abstract: A blending container may comprise a body forming a cavity. The body may comprise a closed end having a blade assembly, wherein the closed end is configured to operatively couple to a motor base. The blending container may also comprise an open end opposite the closed end, that comprises a perimeter edge defining an opening, wherein at least a portion of the perimeter edge is configured to operatively receive a serving lid or serving cup when the closed end is operatively coupled to the motor base.

Abstract: A cutting board assembly includes a basin that defines a compartment. A cutting board overlies the basin. The cutting board defines a scrap opening for dispensing scraps from the cutting board into the compartment of the basin. A scrap mover is positioned in the compartment of the basin and is moveable relative to the basin for moving scraps inside the compartment to provide additional space for more scraps.

Abstract: In one aspect, a condiment dispenser is provided including a pump having an inlet, and outlet, and a movable wall forming at least a portion of a pumping chamber such that moving the movable wall adjusts a volume of the pumping chamber to pump fluid from the inlet toward the outlet. A spout is connected to the outlet of the pump and has a channel extending to a dispensing opening. A bellows is disposed along at least a portion of the channel. A piston is connected to the movable wall of the pump and movable between a first position and a second position to move the movable wall of the pumping chamber to pump fluid toward the dispensing opening of the spout. Movement of the piston between the first and second positions also compresses and releases the bellows.

Abstract: New and novel structures and methods of manipulating various food preparation items in conjunction with counter-tops, work-surfaces and sinks have been disclosed.

Abstract: A bath receptor includes a first basin, a second basin, and a partition positioned between the first basin and the second basin. The first basin includes a first whirlpool system configured to direct water in a first rotational direction within the first basin. The second basin includes a second whirlpool system configured to direct water in a second rotational direction within the second basin. The second rotational direction is opposite the first rotational direction. The partition is physically coupled to the first basin and the second basin.

Abstract: A protective enclosure for a bar of soap that is designed to securely fix a bar of soap to a base, itself exhibiting receiving and securing mechanism, a centralized ventilation port and drain (or drains), and an occlusive top enclosure, wherein, once the soap is fixed to the securing mechanisms, through the application of force, and subsequent to first use, the soap and base of the protective enclosure form an adhesive seal facilitated by said securing mechanisms and drain or drains. The top enclosure and base themselves are reversibly adherable to one another through magnetic, mechanical means or a combination of both. The soap can be used either attached to the base of the protective enclosure or detached from the base of the protective enclosure.

Abstract: A dispenser system and method for dispensing metered doses of a foam or liquid is disclosed. The dispensing system can include a pumping device for pumping metered doses of a liquid from a liquid reservoir out through a nozzle. The pumping device can include an electronically commutated motor that provides greater accuracy and uniformity in dispensing metered doses. During operation of the pumping device, one or more electrical parameters can be monitored and based on the electrical parameters, the system can make adjustments in dispensing metered doses. In one aspect, the electrical parameter can be monitored to determine whether the liquid reservoir contains a low level of liquid.

Abstract: Exemplary soap or sanitizer dispenser and methods of operating such dispensers are disclosed herein. An exemplary soap or sanitizer dispenser include a reservoir for holding soap or sanitizer, a pump, a dispensing spout and an object sensor. The pump is in fluid communication with the reservoir and with the dispensing spout. The dispensing spout is located remotely from the pump. The dispenser further includes a liquid present sensor. The liquid present sensor is proximate the dispensing spout. The dispenser further includes circuitry for causing the pump to pump liquid from the reservoir, circuitry for receiving a signal form the liquid level switch that liquid is present, circuitry for causing the pump to stop pumping liquid after liquid is detected at the liquid present sensor, circuitry for receiving a signal from the object sensor that an object has been detected and circuitry for causing the pump to dispense a dose of fluid.

Abstract: The present invention is a towel bar that can be used as a traditional towel bar extender or an additional towel bar over solid shower walls. An objective of the present invention to provide users with a product that can be used as a traditional towel bar extender, as well as an additional towel bar over solid shower walls, without the use of additional tools or permanent installation. Dual bar embodiments of the present invention improve the air flow to accelerate the drying of wet towels and prevent moldy odors. Longer reach embodiments of the present invention bring the towel lower so young children can reach them, eliminating the need to continue drilling the bathroom walls with permanent towel bars at different heights to adjust for the growing heights of children.

Abstract: Provided is a toilet paper roll which is fit for a longer toilet paper suitable for use for toilets with washing function. The toilet paper roll including a paper core and 2-ply toilet paper wound thereon, the 2-ply toilet paper having two plies adhered together by way of recesses formed by embossing, wherein the toilet paper roll has a roll diameter of 120 mm or smaller, and a degree of compaction of 0.66 to 1.50, and wherein the toilet paper has first and second plies laminated together, the first ply having first and second recesses of different depths formed by embossing.

Abstract: A dispenser kit comprising a dispenser support cord configured to attach to a first roll holder configured to hold a first roll having a first sheet count; a housing comprising a top side piece, a front side piece and a back side piece, wherein the top side piece, front side piece and back side piece are disassembled in the dispenser kit and the flexible dispenser support cord is configured to attach to the top side piece; and wherein the top side piece, front side piece and back side piece are configured to be assembled to form the housing and wherein the housing is configured to accept a second roll having a second sheet count greater than the first sheet count.

Abstract: Systems, devices and methods adaptable for use with or as a toilet seat to assist in a bowel movement. The systems and devices may include one or more projections extending upward to be desirably positioned relative to body parts while the user is seated on a toilet seat having the one or more projections.

Abstract: A bathtub support pole can be fixated between a ceiling and a wall of a bathtub. The bathtub support pole includes a support member, and a height adjustment component. The support member has a first end mountable to a ceiling and a second end mountable to the wall of the bathtub. The height adjustment component is located on the support member and is configured to adjust a length of the bathtub support pole between the first end and the second end to fix the first end of the support member against the ceiling and the second end of the support member against the wall of the bathtub. The second end of the support member encompasses a portion of a rim of the bathtub and opposing sides of the wall of the bathtub.

Abstract: A support device and associated method of use may be used for supporting a surface to be cleaned, such as a tilt-in window, and associated cleaning supplies. The support device may include at least one protective support feature or surface, such as a top cushion. The support device may also include at least one support feature for supplies, such as an attachment ring and/or a bag or other supply receptacle. The support device may include a plurality of legs, such as two front legs and two back legs, and the legs may be foldable or compressible for moving or storage of the support device. Pairings of legs may further include locking features or other support arms or similar features. The support device may be configured to support one or more elements of a tilt-in window when those elements are in an open configuration, enabling easier cleaning of the window.

Abstract: In general, the present disclosure is directed to a hand-held surface cleaning device that includes a relatively compact form-factor to allow users to store the same in a nearby location (e.g., in a drawer, in an associated charging dock, on a table top) for easy access to perform relatively small cleaning tasks that would otherwise require retrieving a full-size vacuum from storage. A hand-held surface cleaning device consistent with aspects of the present disclosure includes a body (or body portion) with a motor, power source and dust cup disposed therein. The body portion also functions as a handgrip to allow the hand-held surface cleaning device to be operated by one hand, for example.

Abstract: A cleaning device includes a suction device configured to suck a pollutant into the suction device; a body configured to collect the sucked pollutant, wherein the suction device includes: a drum rotatable around an axis and having a hollow portion, a driving motor disposed in the hollow portion of the drum and configured to apply a rotational force to the drum to rotate the drum around the axis, a rotatable chamber surrounding the driving motor and disposed between the drum and the driving motor, the rotatable chamber rotatable coaxially with the axis and configured to rotate with the drum so that a cooling fluid between the driving motor and the rotatable chamber spirals around the driving motor when the drum is rotated, and a cooling fluid discharge hole at an end of the rotatable chamber to discharge the cooling fluid outside of the rotatable chamber.