Abstract: A secondary molding component includes: a first molding portion that has a base portion and a projecting portion projecting from an outer surface of the base portion and is made of resin; and a second molding portion that has a bonded portion bonded to a circumference of the projecting portion and is made of resin, in which the projecting portion has a fused portion that is fused with a part of the bonded portion at an end opposite to the base portion, and an interface between the projecting portion and the bonded portion has a portion that is formed so as to vertically stand from the base portion.

Abstract: A seat belt retractor includes a winding device for winding and unwinding a webbing by rotation and a winding state detection mechanism for detecting the winding state of said webbing onto the winding device. The winding state detecting mechanism includes a first gear which is connected to a rotary shaft of the winding device; a second gear which has a large-diameter gear portion meshing with the first gear and a small-diameter gear portion having a number of teeth smaller than that of the large-diameter gear portion; a ring cam which is provided with an internal gear portion, formed in the inner periphery thereof, meshing with the small-diameter gear portion of the second gear and is also provided with a cam portion formed in the outer periphery thereof; and a signal output device which receives a cam action of the ring cam to output a signal.

Abstract: A rotational sensor includes a detection element accommodated in a case and detecting a rotational motion of a rotor located outside the case to output a rotational signal, a terminal physically and electrically connected to the detection element, a connecting member electrically connected to the terminal to output the rotational signal from the terminal outside the rotational sensor and an elastic body fitted into the case by press-fitting and through which the terminal is inserted.

Abstract: A rotational sensor includes a detection element accommodated in a case, a terminal electrically connected to the detection element, and an elastic body fitted into the case by means of press fit and through which the terminal is inserted.

Abstract: Carbon black having boron solid-solubilized therein, which has an electrical resistivity of not higher than 0.1 &OHgr;cm, as measured in accordance with JIS K1469.

Abstract: Granulated acetylene black having a bead strength of at least 5 g/grain, a bulk density of at least 0.2 g/cm.sup.3 and a grit content of at most 10 ppm.

Abstract: Granulated acetylene black having a bead strength of at least 5 g/grain, a bulk density of at least 0.2 g/cm.sup.3 and a grit content of at most 10 ppm.