Abstract: A water-cooled motor includes: an annular stator having a central axis; and an annular housing surrounding the stator around the central axis and provided with a cooling channel within the housing, the housing includes: an annular non-magnetic metal pipe; and a casting member cast to envelop the metal pipe around the central axis, and the metal pipe is located inward of the cooling channel and located outward of an outer surface of the stator, in a radial direction of the stator.

Abstract: An electrochemical measurement method is provided in which a working electrode that causes an oxidation-reduction reaction with a measurement target and a counter electrode connected to the working electrode are provided in an electrolytic solution containing the measurement target, and a measuring voltage is applied between the working electrode and the counter electrode to measure a current that flows between the working electrode and the counter electrode in proportion to the amount of the measurement target, wherein an eliminating electrode is provided in the electrolytic solution, and the method performs: eliminating the measurement target by applying an eliminating voltage, which has the same polarity as the measuring voltage, between the eliminating electrode and the counter electrode to oxidize or reduce the measurement target; diffusing a new measurement target; and measuring the current by applying the measuring voltage between the working electrode and the counter electrode.

Abstract: A cleaning tool has a rotating section including: the pressing section including a rotation-control protrusion; a first coupling section; and a second coupling section. The second coupling section includes a plurality of rotation-control recessions that include: a base section that receives a sliding section; and a rotation-control wall section that fixes the arm angle by mating with a side surface section. The second coupling section also includes release-direction inclined sections whereby, in the housed state, the rotation-control protrusion can be moved from a first rotation-control recession to a second rotation-control recession, by the second coupling section sliding the sliding section to the first rotation-control wall section mated with the rotation-control protrusion, without pressing the pressing section.

Abstract: A cleaning sheet has a first direction, a second direction, and a thickness direction that are orthogonal to each other. The cleaning sheet includes: a water retention sheet that retains a chemical solution; a surface sheet that is a nonwoven fabric; and a cleaning region. The surface sheet includes: a first surface on a side of a surface to be cleaned; and a second surface on a side of the water retention sheet. The surface sheet includes, in the cleaning region, a plurality of flap portions. Each of the plurality of flap portions includes: one end; another end; a fixed end portion that connects the one end and the another end; and a free end portion that protrudes from the one end and the another end as starting points toward a direction away from the fixed end portion.

Abstract: An arm for a cleaning tool is configured so as to be extendable in the axial direction and includes at least: a first cylindrical body that has a hollow section and includes an inner surface; and a second cylindrical body that is inserted inside the hollow section. The first cylindrical body includes first engagement sections configured so as to be bendable towards the outside, at a first tip and the inner surface. The second cylindrical body includes an engagement member including: a coupling section that couples with the second cylindrical body at a second base end; a cylindrical section arranged inside the hollow section and having an outer surface; and second engagement sections arranged on the outer surface and configured so as to engage with the first engagement sections.

Abstract: A cleaning tool has a rotating section including: the pressing section including a rotation-control protrusion; a first coupling section; and a second coupling section. The second coupling section includes a plurality of rotation-control recessions that include: a base section that receives a sliding section; and a rotation-control wall section that fixes the arm angle by mating with a side surface section. The second coupling section also includes release-direction inclined sections whereby, in the housed state, the rotation-control protrusion can be moved from a first rotation-control recession to a second rotation-control recession, by the second coupling section sliding the sliding section to the first rotation-control wall section mated with the rotation-control protrusion, without pressing the pressing section.

Abstract: Provided is a cleaning tool with which a cleaning sheet can be efficiently used during cleaning. A cleaning sheet is provided with holding spaces through which a cleaning-body holder is inserted. The cleaning-body holder is provided with: cleaning-body holding parts which are inserted into the holding spaces to hold the cleaning sheet; and a handle part which is connected to the cleaning-body holding parts, and which is to be held by a user. The cleaning-body holding parts are provided with: base parts connected to the handle part; tip parts at an opposite side to the base parts; and intermediate parts which extend from the base parts towards the tip parts. In a state in which the cleaning-body holding parts have been inserted into the holding spaces to hold the cleaning sheet, sections of the cleaning sheet corresponding to the intermediate parts are configured so as to be thicker, in the thickness direction of the cleaning sheet, than sections of the cleaning sheet corresponding to the base parts.

Abstract: To provide a cleaning tool exhibiting excellent cleaning effectiveness. The present invention relates to a cleaning tool comprising a cleaning sheet, and a holding tool for holding said cleaning sheet. The cleaning sheet is provided with: a brush part capable of cleaning an object to be cleaned; a base part; and insertion parts for the holding tool. The brush part is configured from a fiber, and is provided with first brush regions and second brush regions. The second brush regions are provided with protruded regions configured so as to be longer than the first brush regions.

Abstract: A cleaning sheet includes an aperture and a housing space. The housing space further includes a first space region, and a second space region which is shorter than the first space region. The first space region is disposed closer to the aperture than the second space region.

Abstract: To provide a cleaning tool exhibiting excellent cleaning effectiveness. The present invention relates to a cleaning tool comprising a cleaning sheet, and a holding tool for holding said cleaning sheet. The cleaning sheet is provided with: a brush part; a base part; and insertion parts through which holding parts of the holding tool are inserted. The brush part is provided with a plurality of strip pieces. The strip pieces include first strip pieces, and second strip pieces having a higher rigidity than the first strip pieces. The second strip pieces are provided with scrape-out parts capable of scraping out dust on an object to be cleaned.

Abstract: To provide a cleaning tool exhibiting excellent cleaning effectiveness. The present invention relates to a cleaning tool comprising a cleaning sheet, and a holding tool for holding said cleaning sheet. The cleaning sheet is provided with: a brush part capable of cleaning an object to be cleaned; a base part; and insertion parts for the holding tool. The brush part is provided with a first contact region and a second contact region. The second contact region is provided with a lower region formed so as to be lower than the first contact region in the thickness direction. The lower region is used as a guide region capable of guiding dust on the object to be cleaned towards the adjacent first contact region.

Abstract: To provide a cleaning tool with which a cleaning sheet can be efficiently used during cleaning. The present invention relates to a cleaning tool comprising a holding tool for holding a cleaning sheet. In a state in which holding parts of the holding tool are inserted into insertion parts of the cleaning sheet, tension imparting parts of the holding parts impart tensile force on second regions of the cleaning sheet to form tension portions, and sheet members in the tension portions in a length-intersecting direction are moved in directions in which first regions are disposed.

Abstract: A mold-making device may include a stirring device including a stirring tank and at least one stirring blade. The stirring device may further include a packing port that is configured to open and close on a bottom of the stirring tank. The stirring device may stir a particulate aggregate and at least one additive by rotating the at least one stirring blade within the stirring tank to yield an admixture. A forming mold may communicate with the packing port and mold the admixture into a predetermined shape. A packing device may compress a surface of the admixture within the stirring tank and pack the admixture into the forming mold via the packing port.

Abstract: Provided is a cleaning tool with which a cleaning sheet can be efficiently used during cleaning. A cleaning sheet is provided with holding spaces through which a cleaning-body holder is inserted. The cleaning-body holder is provided with: cleaning-body holding parts which are inserted into the holding spaces to hold the cleaning sheet; and a handle part which is connected to the cleaning-body holding parts, and which is to be held by a user. The cleaning-body holding parts are provided with: base parts connected to the handle part; tip parts at an opposite side to the base parts; and intermediate parts which extend from the base parts towards the tip parts. In a state in which the cleaning-body holding parts have been inserted into the holding spaces to hold the cleaning sheet, sections of the cleaning sheet corresponding to the intermediate parts are configured so as to be thicker, in the thickness direction of the cleaning sheet, than sections of the cleaning sheet corresponding to the base parts.

Abstract: Provided is a cleaning tool with which a cleaning sheet can be efficiently used during cleaning. A cleaning sheet is provided with holding spaces through which a cleaning-body holder is inserted. The cleaning-body holder is provided with: cleaning-body holding parts which are inserted into the holding spaces to hold the cleaning sheet; and a handle part which is connected to the cleaning-body holding parts, and which is to be held by a user. The cleaning-body holding parts are provided with: base parts connected to the handle part; tip parts at an opposite side to the base parts; and intermediate parts which extend from the base parts towards the tip parts. In a state in which the cleaning-body holding parts have been inserted into the holding spaces to hold the cleaning sheet, sections of the cleaning sheet corresponding to the intermediate parts are configured so as to be thicker, in the thickness direction of the cleaning sheet, than sections of the cleaning sheet corresponding to the base parts.

Abstract: To provide an apparatus for reclaiming foundry sand and a method for reclaiming foundry sand that can effectively remove binders and so on that attach to returned foundry sand that has been used. Foundry sand that has been used is supplied from a chute for feeding sand 14A to a rotor 16. The rotor 16 is rotated by a driver 20 so that frictional force is generated on the sand in the rotor 16. Then, the sand in the rotor 16 is dropped into the container for washing with water 30 that is located below the rotor 16. In the container for washing with water 30, an agitator 34 is rotated by the driver 20 so that the sand in the container for washing with water 30 is agitated and washed with water.

Abstract: To provide a cleaning tool exhibiting excellent usability. The present invention relates to a cleaning tool comprising a cleaning sheet, and a holding tool for holding said cleaning sheet. The cleaning sheet is provided with: a brush part capable of cleaning an object to be cleaned; a base part; and insertion parts for the holding tool. The brush part is formed from: a first brush part provided to one side of the base part; and a second brush part provided to another side of the base part. The first brush part and the second brush part are provided with a first region and a second region which each have different configurations.

Abstract: First, a supply device supplies a foamed kneaded material into a cylinder. Then, in a state in which an internal space of the cylinder is communicated with a pattern forming space of a mold, the piston disposed in the cylinder is moved toward the foamed kneaded material side while opening a gas release hole formed piercing through the piston. Then, at a timing when the piston has reached an expected position where the piston is expected to be on contacting the foamed kneaded material supplied into the cylinder, the gas release hole is closed by an open-close plug. Then, the foamed kneaded material supplied into the cylinder is pressed toward the pattern forming space side of the mold by moving the piston toward the foamed kneaded material side.

Abstract: A cleaning sheet and cleaning instrument that are structured to have a space for capturing dust in a cleaning region. Fiber bundle constituent fibers forming a fiber bundle and strips are configured to be bent along a bonding part so as to be raised up in a direction away from a holding region. The fiber bundle is configured such that, when a first strip and a second strip are raised, a first engagement part can be engaged with the fiber bundle constituent fibers, and a second engagement part of the first strip and a second engagement part of the second strip can be engaged with each other.

Abstract: To provide a production method for a cleaning tool and a cleaning body with which the attachment of a holding tool to the cleaning body is facilitated. Provided is a production method for a cleaning tool provided with a cleaning sheet, and a holding tool for holding the cleaning sheet. The cleaning sheet is provided with: a base part; and a first fiber assembly which is bonded to the base part. The production process includes a step in which tensile force imparted to the first fiber assembly is released, and fibers in a state of having been stretched by the tensile force are shrunk to form bent regions in the base part.