Abstract: An object of the present invention is to provide a heat sensitive recording material which can develop color at high density by the inclusion of a novel guanidine compound which is strongly basic and superior in diffusion resistance.

Abstract: A steering wheel having partially applied wooden outer covers, which can be produced without having the wooden outer covers scratched, and the like, and can be produced with high working efficiency, and a method for manufacturing the steering wheel are provided. Raw materials, from which wood members are formed, are attached at a rim portion of a core metal, and cores are formed in this state. Thereafter, the wood members are shaped from the raw materials. Further, resin pieces are attached in spaces between the wood members and the cores to limit displacement of the wood members. Then, the cores and the resin pieces are covered with covering portions. As described above, spaces are formed, and the cores are formed in a state in which the raw materials of the wood members are attached. This allows shaping of the wood members after formation of the cores.

Abstract: An object of the present invention is to provide a heat sensitive recording material which can develop color at high density by the inclusion of a novel guanidine compound which is strongly basic and superior in diffusion resistance. The present invention for attaining the above-described object is a heat sensitive recording material comprising a substrate supporting thereon a heat sensitive recording layer containing a diazonium salt compound, a coupler which reacts with the diazonium salt compound when heated to develop color, and abase, wherein the heat sensitive recording layer includes as the base at least one of the guanidine compounds represented by the general formula (1): wherein, in the general formula (1), R1 and R2 represent an alkyl group or aryl group and may be the same or different, R3 and R4 represent a hydrogen atom, alkyl group or halogen atom and may be the same or different, and X represents a divalent connecting group.

Abstract: Disclosed are a pyrrolopyrimidineone compound represented by the following general formula (1) and a heat-sensitive recording material using the pyrrolopyrimidineone compound as a coupler: General formula (1) wherein R1 and R2 each independently represents a hydrogen atom, a halogen atom, an aryl group, an alkyl group, a cyano group, an acyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an arylsulfonyl group; R3 represents an amino group, a substituted amino group, a hydroxyl group, an acyloxy group, an arylcarboxyl group, an alkoxy group, an aryloxy group, an alkylthio group, or an arylthio group; R4 represents a hydrogen atom, a halogen atom, or an electron attracting group whose Hammett substituent constant &sgr;p is 0.2 or more; and L represents a substituent group which can leave when the compound reacts with a diazonium salt.

Abstract: The present invention provides a method for forming an azo colorant by reaction of a diazo compound and a coupler. The coupler has a leaving group at the coupling position thereof, such that a coupling reaction rate is faster than it would be if the coupler did not have the leaving group. The coupling reaction rate constant k is preferably 0.1 (s−1) or more.

Abstract: In order to provide a steering wheel that can prevent chattering of a wooden member with respect to a metal core, a steering wheel comprising: an annular metal core, the metal core connecting to a vehicle; and a wooden member, the wooden member curving in a substantial arc corresponding to the metal core and having a passing hole formed therein, with the metal core passing through the passing hole; wherein a space is formed at, at least a portion of boundary between the metal core and an inner wall, forming the passing hole, of the wooden member, the space being for absorbing relative movement of the metal core and the wooden member, is provided.

Abstract: In order to provide a steering wheel in which the strength of a wooden member is enhanced and the appearance of the wooden member is improved, a steering wheel comprising: a substantially annular metal core; and a wooden member comprising a plurality of wooden pieces, the wooden pieces being formed from a pure wooden material and bonded together to surround a part or the whole of the metal core when mounted on the metal core; wherein the wooden pieces are formed from a single pure wooden material, and the wooden pieces that are bonded together are formed from adjacent sites of the single pure wooden material, is provided.

Abstract: A hydrazone dye is provided which forms cyan color having an excellent hue. The hydrazone dye is expressed by the following general formula (I): wherein Ar represents an aryl group or a heterocyclic group; R1 through R4 each represent a hydrogen atom, a halogen, —CN, —NH2, —NO2, —OH, —CO2H, —SO3H, a quaternary ammonium group, —CO2M1/n, —SO3M1/n, an alkyl group, alkenyl group, alkynyl group, aryl group, acyl group, carbamoyl group, sulfamoyl group, alkoxycarbonyl group, aryloxycarbonyl group, acyloxy group, alkoxy group, aryloxy group, alkylthio group, arylthio group, alkylsulfonyl group, arylsulfonyl group, alkylphosphoryl group, arylphosphoryl group, or a substituted amino group; M represents a metal atom; and n represents an integer from 1 to 4.

Abstract: A battery case comprising a case body, a closure for closing an open end of the case body, a pivotal plate pivotally movably supported in the vicinity of an opening edge of another open end of the case body for covering this open end, and a spring attached to the case body externally thereof for biasing the pivotal plate inwardly of the case body. Contact pieces are provided on the closure and the pivotal plate each on the inner surface thereof and adapted to contact the positive electrode and the negative electrode of a battery respectively.

Abstract: There is provided a coupler giving a magenta pigment excellent in hue using a diazonium salt compound which can be fixed at a wavelength around 420 nm.

Abstract: An bag apparatus wherein an inflator portion is disposed at a steering column side, a bag portion is disposed at a steering wheel side and in a state in which the inflator portion and the bag portion are relatively rotatable by connecting means, gas which has been generated at the inflator portion is introduced to the bag portion side, and superior effects are achieved in that a space for providing the air bag apparatus at the steering wheel is reduced so as to improve the designing abilities, the mass of the air bag apparatus is decreased so as to improve the vibration characteristics, and a roll connector for transmitting a control signal is not required.

Abstract: A heat-sensitive recording material having a support and a heat-sensitive recording layer provided thereon. The heat-sensitive recording layer contains a diazonium salt compound and a coupler which reacts with the diazonium salt compound upon heating to form a color. The heat-sensitive recording layer contains a compound of the following formula (I): ##STR1## wherein R represents a member selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, and an aryl group; X represents a member selected from the group consisting of --COOR.sup.1, --OCOR.sup.--1, --CONR.sup.1 R.sup.2, and --NR.sup.2 COR.sup.1 ; R.sup.1 represents an alkyl group or an aryl group, R.sup.2 represents a member selected from the group consisting of a hydrogen atom, an alkyl group, and an aryl group; n represents an integer from 1 to 5.

Abstract: .alpha.-resorcylic acid ester derivatives useful as electron-accepting compounds for recording materials, and highly durable recording materials containing these derivatives. The .alpha.-resorcylic acid derivative is represented by the following general formula (I), ##STR1## wherein R.sub.1 represents a hydrogen atom, a halogen atom or an alkyl group, and X represents a divalent group.

Abstract: A webbing retractor winds-up a webbing by a winding shaft. A lock ring rotates according to movement of the winding shaft. A rotational delay of the lock ring with respect to the winding shaft is generated when the webbing is rapidly drawn-out. The rotational delay of the lock ring causes a lock plate to prevent the webbing from being drawn-out. An engaging member is movable to a separated position where the engaging member is separated from the lock ring, and to an engaging position where the engaging member engages the lock ring to generate rotational delay. Further, the engaging member is urged in one of the direction of the separated position and the direction of the engaging position when the engaging member is separated from a neutral position disposed at an intermediate portion between the separated position and the engaging position. A moving member moves with the winding shaft and rotates.

Abstract: Disclosed herein is a tension reducer suitable for use in a webbing retractor, which comprises a weak resilient spiral spring whose one end is connected to a webbing take-up spindle of the webbing retractor and which exerts an urging force in a webbing winding direction, a connecting member connected to the other end of the weak resilient spiral spring and disposed rotatably about the take-up spindle, a strong resilient spiral spring whose one end is connected to the connecting member and which exerts an urging force in the webbing winding direction greater than the urging force of the weak resilient spiral spring, a device for stopping the rotation of the connecting member in the webbing winding direction so as to avoid the exertion of the urging force of the strong resilient spiral spring on a webbing at the time that the webbing is pulled out of the take-up spindle to be fastened to an occupant, and a device disposed about the take-up spindle for controlling the degree of tightening of the windings of the

Abstract: An oxygen-sensing element particularly for use in the exhaust stream of an internal combustion engine. In one embodiment, the sensing element may be a tubular solid electrolyte body with a transverse web forming a relatively shallow recess at one end of the body and a relatively deep tube at the other. Separate electrodes are formed on the surface of the body proximate the recess and on both opposing sides of the web. A porous plug disposed in the recess covers one of the electrodes. When the electrode on the surface of the body is exposed to the exhaust stream of a fuel-rich air-fuel mixture, the EMF across that electrode and the electrode on the underside of the web, which is exposed to fresh air, is indicative of the oxygen content of the exhaust stream.

Abstract: An oxygen-sensing element particularly for use in the exhaust stream of an internal combustion engine. In one embodiment, the sensing element may be a tubular solid electrolyte body with a transverse web forming a relatively shallow recess at one end of the body and a relatively deep tube at the other. Separate electrodes are formed on the surface of the body proximate the recess and on both opposing sides of the web. A porous plug disposed in the recess covers one of the electrodes. When the electrode on the surface of the body is exposed to the exhaust stream of a fuel-rich aur-fuel mixture, the EMF across that electrode and the electrode on the underside of the web, which is exposed to fresh air, is indicative of the oxygen content of the exhaust stream.

Abstract: The safety seat belt system comprises an emergency-locking type seat belt retractor (ELR) mounted within a tiltable backrest of a reclining seat. The ELR is mounted rotatably on a support shaft horizontally extending within the backrest and rigidly secured to the backrest frame in such a manner that the ELR is suspended vertically from the support shaft regardless of any change in the angle of the backrest. The ELR is locked to the support shaft by a releasable locking mechanism operated by an actuating mechanism which is preferably linked to the reclining adjustment lever of the backrest reclining mechanism.

Abstract: The lubricant composition of the invention is very effective in extending the fatigue life and increasing the corrosion resistance of the machine parts lubricated therewith. The lubricant composition comprises two types of essential additives of (a) a dithiocarbamic acid ester and/or an alkyl thiocarbamoyl compound and (b) a 1,3,4-thiadiazole compound admixed with the lubricant base material each in a limited amount. In addition to the above mentioned advantages, the resistance against scoring can further be increased by the admixture of the lubricant composition with a third additive (c) such as sulfurized olefins, sulfurized oils, sulfurized oxymolybdenum dithiocarbamates, sulfurized oxymolybdenum organophosphordithioates, phosphoric acid esters and phosphorous esters.