Abstract: A flow channel device includes a first storage part that stores liquid, a first flow channel through which liquid in the first storage part passes, and a second flow channel through which liquid passes to the first storage part, in which a thickness of the first flow channel is smaller than a thickness of the second flow channel.

Abstract: A stress sensor comprises: a diaphragm; an intermediate layer disposed on a surface of the diaphragm; a sensitive membrane disposed on the intermediate layer; and a piezoresistive element disposed in a region of the diaphragm in contact with an outer edge of the intermediate layer.

Abstract: A SAW device includes a piezoelectric substrate, a support substrate which is located on a lower surface of the piezoelectric substrate and has a smaller thermal expansion coefficient than that of the piezoelectric substrate, an IDT electrode located on the piezoelectric substrate, a cover forming a space above the IDT electrode, and a plurality of first strip conductors which extend alongside each other on the cover and at least a part of which overlaps the space when viewed on a plane.

Abstract: A SAW device includes a piezoelectric substrate, a support substrate which is located on a lower surface of the piezoelectric substrate and has a smaller thermal expansion coefficient than that of the piezoelectric substrate, an IDT electrode located on the piezoelectric substrate, a cover forming a space above the IDT electrode, and a plurality of first strip conductors which extend alongside each other on the cover and at least a part of which overlaps the space when viewed on a plane.

Abstract: An acoustic wave device and an electronic component are disclosed. The acoustic wave device includes a substrate, excitation electrodes on the substrate and a cover. The cover comprises a frame member on the substrate, and a lid member. The frame member surrounds the excitation electrodes and includes an inner wall, top surface and an outer wall. The lid member is disposed on the top surface, and includes first and second surfaces opposite to each other, and a descending part on the second surface. The second surface faces the substrate. The descending part extends downward from the second surface, and covers at least a part of the inner wall or at least a part of the outer wall. The electronic component includes the acoustic wave device on a mounting substrate via an electrically conductive bonding member, and molding resin covering the device.

Abstract: A sensor includes a weight body, a frame which is located so as to surround the weight body when viewed from above, a beam part which is provided with flexibility and in which a first end is connected to the weight body and a second end is connected to the frame, and a detection part which is provided on the beam part and detects deformation of the beam part as an electric signal. The beam part includes a main part in which a cross-sectional shape in a direction perpendicular to a longitudinal direction connecting the first end and the second end is a rectangular shape, and an extending part which protrudes from at least one of an upper surface or a lower surface of the main part and extends in the longitudinal direction or extends in a width direction perpendicular to the longitudinal direction when viewed from above.

Abstract: A stress sensor comprises: a diaphragm; an intermediate layer disposed on a surface of the diaphragm; a sensitive membrane disposed on the intermediate layer; and a piezoresistive element disposed in a region of the diaphragm in contact with an outer edge of the intermediate layer.

Abstract: An acoustic wave device and an electronic component are disclosed. The acoustic wave device includes a substrate, excitation electrodes on the substrate and a cover. The cover comprises a frame member on the substrate, and a lid member. The frame member surrounds the excitation electrodes and includes an inner wall, top surface and an outer wall. The lid member is disposed on the top surface, and includes first and second surfaces opposite to each other, and a descending part on the second surface. The second surface faces the substrate. The descending part extends downward from the second surface, and covers at least a part of the inner wall or at least a part of the outer wall. The electronic component includes the acoustic wave device on a mounting substrate via an electrically conductive bonding member, and molding resin covering the device.

Abstract: An acoustic wave device and an electronic component are disclosed. The acoustic wave device includes a substrate, excitation electrodes on the substrate and a cover. The cover comprises a frame member on the substrate, and a lid member. The frame member surrounds the excitation electrodes and includes an inner wall, top surface and an outer wall. The lid member is disposed on the top surface, and includes first and second surfaces opposite to each other, and a descending part on the second surface. The second surface faces the substrate. The descending part extends downward from the second surface, and covers at least a part of the inner wall or at least a part of the outer wall. The electronic component includes the acoustic wave device on a mounting substrate via an electrically conductive bonding member, and molding resin covering the device.

Abstract: A sensor includes a weight body, a frame which is located so as to surround the weight body when viewed from above, a beam part which is provided with flexibility and in which a first end is connected to the weight body and a second end is connected to the frame, and a detection part which is provided on the beam part and detects deformation of the beam part as an electric signal. The beam part includes a main part in which a cross-sectional shape in a direction perpendicular to a longitudinal direction connecting the first end and the second end is a rectangular shape, and an extending part which protrudes from at least one of an upper surface or a lower surface of the main part and extends in the longitudinal direction or extends in a width direction perpendicular to the longitudinal direction when viewed from above.

Abstract: An acoustic wave device and an electronic component are disclosed. The acoustic wave device includes a substrate, excitation electrodes on the substrate and a cover. The cover comprises a frame member on the substrate, and a lid member. The frame member surrounds the excitation electrodes and includes an inner wall, top surface and an outer wall. The lid member is disposed on the top surface, and includes first and second surfaces opposite to each other, and a descending part on the second surface. The second surface faces the substrate. The descending part extends downward from the second surface, and covers at least a part of the inner wall or at least a part of the outer wall. The electronic component includes the acoustic wave device on a mounting substrate via an electrically conductive bonding member, and molding resin covering the device.

Abstract: Superior yield is achieved by eliminating the occurrence of cracks after connecting together solar cells by soldering on connecting conductors so as to provide highly reliable connecting conductors and solar cell modules. The solar cell modules have solar cells formed with electrodes and ribbon-shaped connecting conductors connecting with the electrodes using solder. The plane shape of at least one end of the connecting conductors is provided with a plurality of angled sections with obtuse angles.

Abstract: In a solar cell module, a solder fillet 19 is formed on an end surface on the shorter length side of a connection tab to be connected to a bus bar electrode 2a, 3a up to the height of the connection tab. The geometry of the solder fillet 19 is adjusted so that an indentation amount is 0-54% of the height or a bulge amount is 0-10% of the height, by which the maximum principal stress generated during the manufacturing process of a solar cell element 4 can be reduced, and therefore occurrences of cracks can be reduced. Also during a laminating process, breaking of the solar cell element or crack generation can be eliminated.

Abstract: To obtain stable linear torque-output characteristics over a wide torque range in a magnetostrictive torque detecting apparatus having a shaft to be measured, an exciting coil for magnetically exciting the shaft, and a detecting coil for detecting magnetostrictive components generated in the shaft distorted by a torque, the shaft is particularly composed of a substrate shaft portion made of a high yield point material and a shape anisotropic layer portion made of a high magnetostrictive material metallographically welded on an outer surface of the substrate shaft. The welded shape anisotropic layer portion is formed with two symmetrical groups of concave/convex portions each arranged at regular angular intervals on the outer circumferential surface thereof at an inclination angle with respect to the axial direction of the shaft.

Abstract: Disclosed is a steel for plastics molds superior in weldability. The steel consists essentially of C: 0.1 to 0.3%, Mn: 0.5 to 3.5%, Cr: 1.0 to 3.0%, Mo:0.03 to 2.0%, V:0.1 to 1.0% and S: 0.01 to 0.10%; Si: not more than 0.25%, P: not more than 0.2%, and B: not more than 0.002%; the balance being substantially Fe. The alloy composition should satisfy the following formula:BH=326.0+847.3 (C%)+18.3 (Si%) -8.6 (Mn%)-12.5 (Cr%).ltoreq.460The steel can be welded in the process of manufacturing a plastics mold without reqiring preheating and postheating.

Abstract: A wear-resistant titanium or titanium-alloy member adapted for use as a poppet valve, rocker arm, etc., of an internal combustion engine, which requires lightness in weight and good wear resistance, and a method for manufacturing the member. The surface of the titanium or titanium-alloy member is given a Vickers hardness number of 390 to 1,200, preferably 400 to 800, and a hardened layer depth of 0.1 to 2.0 mm, preferably 0.3 to 1.5 mm, by being melt-hardened while being supplied with hardening elements.

Abstract: A powder surface welding method using a plasma torch is disclosed, which uses a surfacing powder containing not less than 95% of particles having a particle size of -60 mesh to +250 mesh. This welding is carried out at a welding speed of not less than 3.8 mm/sec without weaving the plasma torch. Particularly, the distance L between the end of the plasma arc jetting nozzle in the plasma torch and the base material to be surfaced is regulated to be within a range of 0.5 Ds+6.ltoreq.L.ltoreq.Ds+8 , and the offset angle .theta. of the axial center of the plasma torch with respect to the rotational center of the base material is regulated to be within a range of 7.degree..ltoreq.0.ltoreq.20.degree..