Abstract: A headrest device for supporting a headrest with respect to a seat. A lower frame is connectable to the seat, and an upper frame is provided for supporting the headrest thereon. A pair of link brackets connects the lower frame to the upper frame for pivotal motion of the upper frame with respect to the lower frame through a limited range of motion between a forward tilt limit position and a rearward tilt limit position. A motor is operatively connected one of the link brackets to move the upper frame between the forward tilt limit position and the rearward tilt limit position in response to a control signal.

Abstract: A headrest frame fabricated from a plastic material and having a core material with a cross-sectional shape that provides rigidity equal to that of a headrest frame fabricated from iron. The headrest frame has at least a first elongate leg having a core material embedded within a first plastic material. The first plastic material has a substantially round cross-sectional shape in the first elongate leg. At least a portion of the core material in said first elongate leg has a substantially rectangular cross-sectional shape.

Abstract: A headrest device for supporting a headrest with respect to a seat. A lower frame is connectable to the seat, and an upper frame is provided for supporting the headrest thereon. A pair of link brackets connects the lower frame to the upper frame for pivotal motion of the upper frame with respect to the lower frame through a limited range of motion between a forward tilt limit position and a rearward tilt limit position. A motor is operatively connected one of the link brackets to move the upper frame between the forward tilt limit position and the rearward tilt limit position in response to a control signal.

Abstract: A headrest frame fabricated from a plastic material and having a core material with a cross-sectional shape that provides rigidity equal to that of a headrest frame fabricated from iron. The headrest frame has at least a first elongate leg having a core material embedded within a first plastic material. The first plastic material has a substantially round cross-sectional shape in the first elongate leg. At least a portion of the core material in said first elongate leg has a substantially rectangular cross-sectional shape.

Abstract: The apparatus comprises a table (5), on which a pattern plate (6) is attached, a flask (7), the bottom surface of which can be fitted to the pattern plate (6), a filling frame (30), the bottom surface of which can be fitted to the upper surface of the flask (7), and in which the highest part of its opening is smaller than the lowest part of its opening, a blow head (17), which is used for blowing in molding sand, and for squeezing the blown-in molding sand, and which is placed above the table (5), and a thin plate body (20), which can be inserted into the blown-in molding sand and which is placed around a sand holder (12) that is a part of the blow head (17), in which the highest part of the opening of the filling frame (30) has such a size that the outer surface of the thin plate body (20) can contact the inner surface of the highest part of the filling frame (30), and in which the size and shape of the lowest part of the opening of the filling frame (30) are the same as those of the opening of the flask (7)

Abstract: Molding sand filled in a space defined by a pattern plate and a flask is pre-compacted before the molding sand is completely pressed. A pre-compacting member is inserted into the molding sand toward the pattern plate, and then is stopped based on a predetermined depth of the pre-compacting member in the molding sand or a predetermined pressure caused by the pre-compacting member in the molding sand.

Abstract: The machine includes a lifter table for lifting a pattern plate and flask which hold molding sand and a pre-compacting member and a pressing member disposed above the lifter table for horizontal movement and for being inserted into the flask when the lifter table lifts the flask. The pre-compacting member includes a thin-plate body to be positioned slightly spaced apart from an inner surface of the flask or inner and outer surfaces of a pattern when inserted into the molding sand held in the flask. The pressing member includes a squeezing body that presses the molding sand from above.

Abstract: Molding sand (S) is put in a mold space defined by a pattern plate (2), having a pattern (2A) on it, and a flask (3). The apparatus includes a thin-plate body (9) and/or a rod (11) to be inserted into the molding sand. It is pre-compacted at a part of it near the inner and outer surfaces of the pattern (2A) and the inner surfaces of the flask (3) by the thin-plate body and rod. The apparatus also has a pressing plate (8) to press all the molding sand after it is pre-compacted.

Abstract: The includes a plurality of squeeze rods (12) and a squeeze plate (14) are used to press molding sand in a flask (16), and wherein the pressure applied to the individual squeeze rods and their individual downward movements are controlled. The device includes a squeeze table (2) on which a pattern plate (1) is mounted, a vertically movable frame (3) disposed above the squeeze table (2) such that the frame can move vertically relative to the squeeze table (2), a squeeze plate (14) mounted on a lower part of the vertically movable frame, a plurality of squeeze rods juxtaposed and penetrating the squeeze plate for vertical sliding movements, a plurality of electric servo-actuators attached to the frame to vertically move the squeeze rods, and a controller for controlling the plurality of the electric servo-actuators.

Abstract: Molding sand (S) is put in a mold space defined by a pattern plate (2), having a pattern (2A) on it, and a flask (3). The apparatus includes a thin-plate body (9) and/or a rod (11) to be inserted into the molding sand. It is pre-compacted at a part of it near the inner and outer surfaces of the pattern (2A) and the inner surfaces of the flask (3) by the thin-plate body and rod. The apparatus also has a pressing plate (8) to press all the molding sand after it is pre-compacted.

Abstract: An apparatus for collecting cleaning bodies in a tubular heat exchanger capable of collecting the cleaning bodies with a high collection efficiency against the temporary introduction of a large amount foreign matter such as falling tools in a cooling water system and against the deflected flow of the cooling water from the upstream side. A rectifying member rectifies or regulates the deflected flow of the cooling water from the upstream side whereby it is possible to collect the cleaning bodies without any adhesion and stagnation of the cleaning bodies in the cooling water on V-shaped collection lattices. It is also possible to trap a large article such as a falling tool between a guide member disposed downstream of the collection lattices and the collection lattices, and to introduce only the cleaning bodies into the guide member. Furthermore, the downstream port of a cleaning body discharge pipe opens toward the downstream side to thereby prevent the clogging of the port with the foreign matter or the like.

Abstract: A device for cleaning inner surfaces of heat exchanger tubes including a pair of main cleaning device bodies each having a moving device and a brush driving device disposed on opposite tube plates on which each opened end of the heat exchanger tubes is disposed. At least one of the pair of main cleaning devices is provided with a cleaning brush changing device, and each brush driving devices is made to correspond to the opened end of the same heat exchanger tube so that pressurized fluid is alternately supplied to each of the corresponding brush driving device from a pressurized fluid supplying unit and thereby the cleaning brush is moved. As a result of this, only one cleaning brush can clean a multiplicity of heat exchanger tubes. Furthermore, since a brush changing device is provided, the cleaning brush can be at need replaced by fresh one so that a further number of heat exchanger tubes can be cleaned.