Abstract: Provided is a reusability determination method for a gear that makes it possible to determine reusability of a gear during or after use to increase the reuse ratio. The reusability determination method for a gear of the present invention includes a step of measuring a content of retained ? phases in the gear, a step of calculating a change rate of the content of the retained ? phases, a step of measuring residual stress applied to the gear, a residual stress ratio calculation step of calculating a residual stress ratio to residual stress in an initial state of the gear, and a reusability determination step of determining whether or not the gear is reusable on the basis of results of the calculation in the retained ? phase change rate calculation step and the residual stress ratio calculation step.

Abstract: Provided is a metal gasket for a cylinder head that is capable of improving engaging force between a substrate and a step adjustment plate.

Abstract: A wiring board has a wiring member, a first reinforcing member and a second reinforcing member. The wiring member has wiring layers and insulating layers which are stacked, and the wiring layers include a first connecting electrode formed on a surface of the wiring member and a second connecting electrode formed on a back surface of the wiring member. A pin is formed on the second connecting electrode. The second reinforcing member is formed by a resin and serves to reinforce the wiring member. The first reinforcing member is formed on the whole back surface of the wiring member except for the pin provided on the second connecting electrode.

Abstract: A wiring board having a lead pin is provided. The wiring board having the lead pin includes a connecting pad which is formed on the wiring board, and to which the lead pin is bonded through a conductive material. The lead pin includes: a shaft portion; a head portion which is provided on one end of the shaft portion; a protruded portion which is formed on a surface side of the head portion opposed to the connection pad; and a first taper portion which is formed between the head portion and a base part of the shaft portion.

Abstract: Provided is a metal gasket for a cylinder head that is capable of improving engaging force between a substrate and a step adjustment plate.

Abstract: A lead pin includes a shaft portion, and a connection head portion which is provided on a top end side of the shaft portion and has a diameter larger than a diameter of the shaft portion, and whose whole outer surface is formed of a spherical surface. The connection head portion is formed of a ball shape, an oval spherical shape, or a teardrop-like shape, and also the connection head portion of the lead pin is connected to a wiring substrate by the reflow soldering.

Abstract: A wiring board having a lead pin is provided. The wiring board having the lead pin includes a connecting pad which is formed on the wiring board, and to which the lead pin is bonded through a conductive material. The lead pin includes: a shaft portion; a head portion which is provided on one end of the shaft portion; a protruded portion which is formed on a surface side of the head portion opposed to the connection pad; and a first taper portion which is formed between the head portion and a base part of the shaft portion.

Abstract: A metal gasket for a cylinder head has a lamination of plates. The gasket includes two base metal plates each of which includes cylinder holes, circumferential beads formed around the peripheries of individual cylinder holes, cooling water holes formed outside the peripheries of the circumferential beads, and an outer bead formed so as to entirely enclose the circumferential beads and the cooling water holes. The circumferential beads of the two base plates are aligned in a direction of thickness of the gasket. Claw shaped protrusions are provided for one of an outer step adjustment metal plate and an inner step adjustment metal plate and extend from a cooling water jacket to the outer edges of the base plates into engagement holes in the other of the inner step adjustment plate and the outer step adjustment plate.

Abstract: A PGA type wiring board includes a wiring board to which a head portion of a pin is joined to a pad portion with solder interposed therebetween, and a pin fixing plate having a through hole formed therein through which a shank portion of the pin is inserted, and having an adhesive layer formed on one surface thereof. The pin fixing plate is bonded to the wiring board with the adhesive layer interposed therebetween while the shank portion of the pin is inserted through the through hole. The through hole is shaped in a stepped form with a two-step configuration when viewed in cross section.

Abstract: A wiring board has a wiring member, a first reinforcing member and a second reinforcing member. The wiring member has wiring layers and insulating layers which are stacked, and the wiring layers include a first connecting electrode formed on a surface of the wiring member and a second connecting electrode formed on a back surface of the wiring member. A pin is formed on the second connecting electrode. The second reinforcing member is formed by a resin and serves to reinforce the wiring member. The first reinforcing member is formed on the whole back surface of the wiring member except for the pin provided on the second connecting electrode.

Abstract: A metal gasket for cylinder head 1 of plate lamination type, comprises two base metal plates each of which includes cylinder holes, circumferential beads formed around the peripheries of individual cylinder holes, cooling water holes formed outside the peripheries of the circumferential beads, and an outer bead formed and positioned so as to entirely enclose the circumferential beads and the cooling water holes, wherein the circumferential beads of the two base plates are aligned in the direction of thickness of the metal gasket. Claw-like protrusions are provided for one of an outer step adjustment metal plate and extending from the cooling water jacket to the outer edges of the base plates, and a thicker inner step adjustment metal plate 4 extending from inside the circumferential beads to the cooling water jacket, into engagement holes in the other of the inner step adjustment plate and the outer step adjustment plate.

Abstract: A multi-layer metal gasket includes at least on active layer and at least one shim layer having aligned combustion holes. The shim layer has annular portions surrounding the combustion holes and tab portions projecting radially outwardly from the annular portions surrounding the combustion holes. The annular portions underlie associated sealing beads of the active layer. The tab portions each have a radially extending neck region and a set of lateral bend tabs supported at the end of the neck region and projecting laterally outwardly thereof. The bend tabs project through an associated set of laterally spaced mounting windows formed in the active layer and are bent back toward one another to secure the shim layer to the active layer.

Abstract: A multi-layer metal gasket includes at least on active layer and at least one shim layer having aligned combustion holes. The shim layer has annular portions surrounding the combustion holes and tab portions projecting radially outwardly from the annular portions surrounding the combustion holes and tab portions projecting radially outwardly from the annular portions. The annular portions underlie associated sealing beads of the active layer. The tab portions each have a radially extending neck region and a set of lateral bend tabs supported at the end of the neck region and projecting radially outwardly thereof. The bend tabs project through an associated set of laterally spaced mounting windows formed in the active layer and are bent back toward one another to secure the shim layer to the active layer.

Abstract: An IC card includes an antenna formed as a flat coil wound several times having an inner vacant area, said antenna being made by punching or etching a thin metal strip and having an outermost loop partially connected to and supported by an outer frame of said thin metal strip, and said antenna having respective innermost and outermost terminals. A semiconductor element is electrically connected to said innermost and outermost terminals, respectively. One of said innermost and outermost terminals having an accommodation hole in which said semiconductor element is accommodated. The semiconductor element and the antenna are supported to maintain their form by a supporting material made of biodegradable resin.

Abstract: An IC card includes an antenna formed as a flat coil wound several times having an inner vacant area, said antenna being made by punching or etching a thin metal strip and having an outermost loop partially connected to and supported by an outer frame of said thin metal strip, and said antenna having respective innermost and outermost terminals. A semiconductor element is electrically connected to said innermost and outermost terminals, respectively. One of said innermost and outermost terminals having an accommodation hole in which said semiconductor element is accommodated. The semiconductor element and the antenna are supported to maintain their form by a supporting material made of biodegradable resin.

Abstract: A metal gasket assembly comprises a metal main plate, a metal auxiliary plate lapped with the main plate, the main plate including cylinder openings formed at positions corresponding to cylinder bores in a cylinder block of an internal combustion engine, annular beads formed around the cylinder openings and having a cross-sectional shape of ‘V’, a plurality of coolant holes formed in the peripheral parts of the annular beads, an outer peripheral bead formed at a position where it entirely surrounds the annular beads and the plurality of coolant holes, and having a slope cross-sectional shape, while the auxiliary plate including cylinder openings formed corresponding to the cylinder openings in the main plate, fold-over parts formed around the auxiliary plate cylinder openings and fold-over in a direction reverse to the direction toward the main plate, and having a width with which they are vertically lapped at least with the entire ‘V’ shape of the annular beads on the main plate, annu

Abstract: A metal gasket includes plural functional layers formed with embossments along peripheral edges of cylinder openings thereof and a backup plate not formed with any embossment and sandwiched between the functional layers. At least one edge plate is provided which is spaced radially within and is coplanar with peripheral edges of cylinder openings of the backup plate. The edge plate is different in thickness from, generally thinner than, the backup plate. Grommets are provided to fasten together the edge plate and portions of the functional layers overlapping the edge plate. With this arrangement, by selecting thicknesses of the edge plate and the backup plate so as to be different between them by a requisite value, surface pressure at peripheral edges of cylinder openings of the metal gasket can be set a desired value. Therefore, this metal gasket is superior in sealing performance and uniformity.