摘要:
A fireproof laminates passing Grade 2 incombustibility according to Japanese Industrial Standard (JIS) A-1321 combustion test is disclosed. The laminate comprises a urethane modified polyisocyanurate foam as a core material and a particular front surface material piled on the core material through self-adhesion of the foam.
摘要:
A method of producing flameproof polyisocyanurate foams is disclosed. When the foam is produced by reacting an organic polyisocyanate with polyols as a modifying agent in the presence of an isocyanate trimerization catalyst, a blowing agent and other additives, a combination of particular low molecular weight diols with particular high molecular weight polyether polyols is used as the polyol in a special weight ratio and a special total amount per 100 parts by weight of the organic polyisocyanate in the presence of special combination of an alkali metal salt of a carboxylic acid and a tertiary amine compound as the catalyst.
摘要:
A process for producing urethane-modified polyisocyanurate foams in which a poly(oxyalkylene-oxyethylene)polyether polyol is used as a modifying agent having the number of functional groups and the molecular weight in specific ranges with the equivalent ratio of NCO/OH being in a specific range and containing a specific quantity of ethylene oxide. The use of this modifying agent provides urethane-modified polyisocyanurate foams exhibiting excellent fire resistance and adhesion to an object surface.
摘要:
A starting apparatus includes a drive motor and a reduction gear having a planetary gear for starting an engine by the drive motor via the reduction gear. An internal gear of the reduction gear includes a locking projection projecting in an axial direction. A rotation restricting member is formed with a guide groove in which the locking projection is loosely received and guided in a circumferential direction. A shock absorbing member is held in the guide groove in a state of being elastically in close contact with the locking projection in the circumferential direction. Thus, shock load to the internal gear is alleviated from the start.
摘要:
An object of the present invention is to provide a coordinate input device of touch-type capable of giving an electric signal to a transducer, even if a piezoelectric vibrator having electrodes on both surfaces thereof is employed.A device according to the present invention comprises: acoustic wave transducers (piezoelectric vibrators) 3a and 4a, each functioning for oscillating a bulk wave (a first wave) toward a top surface 2 of a substrate 1; a planar wiring 7 formed on a back surface of the substrate 1 by the method such as transfer printing with conductive paste, for supplying said piezoelectric vibrator with electric power; a connecting device 8 for connecting said planar wiring with an electrode of each of said acoustic wave transducers 3a and 4a; diffractive acoustic wave mode couplers 9a–10b, each functioning for converting said bulk wave into a surface acoustic wave (a second wave) and vice versa; and a means for detecting a scatter in the surface acoustic wave (the second wave) on the top surface of said substrate. Employing the combination of the planar wiring and the connecting device can resolve the problem of fragility associated with a cable wiring even in the piezoelectric vibrator having the electrodes on both surfaces thereof.
摘要:
A tape cartridge includes a single tape reel around which a length of magnetic tape is wound and which is turnably held within a housing. The beginning of the tape is drawn out through an opening formed in the housing by a tape drawing-out member of a recorder. The drawing-out member has an engaging member at the outer end. The housing has a cell in which a hook member to catch an engaging end of a leader tape, when the leader tape holding the beginning of the magnetic tape is used, is detachably fitted and a cell in which a leader member to hold the beginning of the magnetic tape, when the leader member is used, is contained. The housing is made using a mold which forms a cell having a leader member holding the beginning of the magnetic tape or which forms the cell without the leader member.
摘要:
A tape cartridge comprising a housing, a single tape reel around which a length of tape is wound and which is turnably held within the housing, a leader to which the beginning of the tape is secured, and a tape draw-out member by which the tape is pulled out through an opening formed in the housing into a recorder, characterized in that the leader is composed of a pin member, an elastomer clamp which is fitted around the pin member, a metal clamp fitted around the elastomer clamp, and a highly slippery member of synthetic resin placed between the elastomer clamp and metal clamp.
摘要:
A tape reel for a tape cassette wherein a pair of such reels are contained, comprising an upper flange and a hub which consists of a drum formed integrally with (formed in one piece with, or solidly joined to) a lower flange. The drum comprises an outer cylindrical part on which a tape is wound and an inner cylindrical part which permits the insertion of a driving shaft of a recording-reproducing device for the tape cassette. The inner cylindrical part has projections adapted to engage with the driving shaft, each said projection having a groove formed on the back side for thickness reduction, and the inner cylindrical part and inner ends and both side walls of the projections all have the same thickness. A plurality of connecting ribs are provided joining the outer and inner cylindrical parts of the drum, and extensions are formed outwardly on the inner cylindrical part, on both shoulder portions close to each said connecting rib. Alternatively, a plurality of ribs are formed along the inner circumference of the outer cylindrical part, extending from the outer cylindrical part toward, but short of, the inner cylindrical part.
摘要:
A tape cartridge having a housing formed of upper and lower casings, a single tape reel around which a length of tape is wound and which is turnably held within the housing, the lower casing having an opening through which a drive shaft of a recorder is to be inserted, the tape reel having an upper flange, a lower flange, and a hub which is open at top and closed at bottom, the hub having a hole formed at its bottom in engagement with a brake release plate, a metal disk disposed on the outer side of the bottom of the hub, teeth formed on the bottom around the disk for engagement with the drive shaft of a recorder, the hub having teeth provided on the inner side of its bottom in mesh with a brake lock, a brake release plate mounted in the hub in engagement with its hole, a brake lock mounted further on the brake release plate, the brake lock having brake teeth on the outer periphery of its bottom and follower projections on its top, the hub teeth and the brake teeth of the brake lock being engageable to prevent turning of the tape reel, the follower projections being adapted to be guided by a guide provided in the upper casing, and a spring member disposed between the brake lock and upper casing to urge the brake lock normally in the braking position. The guide of the upper casing and the follower of the brake lock having contours such that the former has guide slopes and positioning points and the latter has projections adapted to be guided by the guide slopes and positioned at the positioning points so that the latter revolves in sliding contact with and fits in the former for positioning.
摘要:
A tape reel for a tape cassette capable of substantially preventing deformation thereof, even when it is thin-walled to substantially reduce a cycle time required for a molding step of the tape reel. The tape reel includes a reel hub and a disc-like flange. Reinforcing ribs include an annular rib arranged on an outer periphery of a disc-like flange and a plurality of linear ribs arranged on an outer surface of the disc-like flange so as to extend from a core stabilizing surface rib to the annular rib. The linear ribs are so arranged that each of the linear ribs intersects at least one of the other linear ribs at a position which is further than a midpoint between the core stabilizing surface rib and the annular rib.