Abstract: A strap adjustment assembly generally comprises an open or hollow connector frame integrally molded of synthetic resin and a strap retainer integrally molded of synthetic resin and assembled in the hollow connector frame. The hollow connector frame includes a grip base having a strap bearing surface, a pair of spaced legs extending from the grip base and having a pair of oblong slots, respectively, and a connecting bar joining the legs remotely from the grip base by a distance. The strap retainer includes a central strap engagement portion, and a pair of arms extending from the central strap engagement portion and being non-rotatably loosely fitted in the slots, respectively. The central strap engagement portion has a strap pressing surface for frictionally pressing a strap end portion against the strap bearing surface. The strap pressing surface is transversely spaced from the arms at least by said distance. The connector frame and the strap retainer are simultaneously molded in an assembled condition.

Abstract: A buckle assembly composed of three components, i.e. a retainer base, a plug and a socket for releasably connecting three belts or straps. The retainer base has an aperture for receiving therein an upstanding generally C-shaped locking lug to connect the retainer base and the socket. The plug is slidably mounted on the retainer base and having a pair of resilient legs snappingly engageable with the locking lug to releasably couple the retainer base and the socket. With this construction, the buckle assembly can be assembled easily without a tedious and time consuming positional adjustment between the plug and the socket. The snap-fit between the resilient legs and the locking lug insures a firm coupling engagement between the retainer base and the socket.

Abstract: A buckle comprises a base plate, a locking hook, and a retainer which are simultaneously molded of polymeric organic synthetis resin. The base plate includes a pair of spaced support members having respective bearing holes and respective ridges on inner surfaces thereof. Similarly, the retainer includes a pair of spaced support members having respective bearing holes and respective ridges on inner surfaces thereof. The locking hook has pairs of support shafts on opposite ends thereof which are angularly movably fitted in the bearing holes of the base plate and the retainer. The locking hook also has a pair of legs on the opposite ends thereof, the legs having respective successions of teeth at their respective distal edges and opposite ends engageable with the ridges on the support members of the base plate and the retainer.

Abstract: A buckle comprises a male member having a tongue-shaped presser having on its bottom side a pair of engaging legs each having on its inner side a stepped portion and a female member in the form of a case having in its top wall a central aperture, the female member having a pair of resilient arms, one mounted on each side thereof, each resilient arm extending from one end of the female member and terminating in a free end portion for resilient angular movement about its proximal end, each free end portion having on its inner side a hook-shaped engaging means adapted for engagement with the stepped portion of the corresponding engaging leg when the engaging legs are forced into the central aperture. The tongue-shaped presser further has on its bottom side a pair of resilient pieces.

Abstract: A transfer chamber is provided between MOCVD reaction chamber and load lock chamber, connected to each chamber through an opening for each, for preventing the reaction chamber from the invasion of foreign gases, which may oxydize metals of MOCVD. The load lock chamber can be evacuated or filled with an inert gas, and has a door to the outside for bringing semiconductor wafers in or out. The transfer chamber is provided with a gas inlet and a gas outlet, through each of them an inert gas is always fed and drained for circulation, and also provided with a transfer mechanism therein for transferring wafers between the load lock chamber and the reaction chamber. Wafers are placed on a susceptor connected to the lid, which is driven by the transfer mechanism. A liner tube for protecting the inner surface of the reaction chamber from undesirable contamination caused by MOCVD reaction may be provided detachably attached to the lid to enclose the wafer.

Abstract: A swivel hook assembly for attachment to a carrying strap of a bag, for example, includes a connector, an elongate support rotatably mounted on the connector, and a hook mounted on the elongate support. The connector, the support and the hook are all molded of synthetic resin. The hook has a head rotatably fitted in a central hole defined in the support and locked against removal therefrom. The connector and the support are simultaneously molded in a single step of molding operation in an assembled condition. The hook may be molded integrally with the support. The swivel hook assembly is composed of a relatively reduced number of parts, can be assembled easily and less costly, and may be colored to meet user's various preferences for fashionable color combinations.

Abstract: A buckle assembly includes a socket member and a plug member adapted to be releasably coupled with the socket member. The socket member includes a resilient locking arm releasable engageable with a pair of locking legs of the plug member when the locking legs are inserted into the socket member. The plug member includes a resilient tongue disposed between the locking legs and lying in a plane extending above the locking legs. The socket member includes a resilient flap disposed above the locking arm and having on its inner surface a presser lug engageable with the resilient tongue to flex the latter downwardly, and a releasing lug engageable with the locking arm to flex the latter downwardly for disengaging the latter from the locking legs.

Abstract: A buckle assembly composed of three components, i.e. a socket, a main plug and an auxiliary plug for releasably connecting three straps or belts. The socket includes a cantilevered resilient locking arm interlockingly engageable with a resilient locking tongue of the main plug when the locking tongue is received in a guide chamber in the socket to thereby couple the socket and the main plug. The auxiliary plug is slidably mounted on the main plug and having two resilient, inwardly deformable locking legs snappingly engageable with respective retaining projections of the socket when the locking legs are received in the guide chamber. The auxiliary plug further includes a resilient releasing leg extending parallel to the locking legs and having a releasing cam projection engageable with the resilient locking arm to flex the latter outwardly away from the guide chamber for releasing the locking arm from interlocking engagement with the locking tongue, thereby uncoupling the main plug and the socket.

Abstract: A swivel joint includes a central member having a joint barrel having a first insertion hole and a second insertion hole parallel thereto, a slot communicating with the first insertion hole, a pair of first confronting inner surfaces defining the first insertion hole and having a pair of first locking ledges respectively, and a pair of second confronting inner surfaces defining the second insertion hole and having a pair of second locking ledges, the first inner surfaces including respective slanted surfaces slanted progressively inwardly toward each other. A retainer member includes a retainer fitted in the slot and a pair of first resilient legs projecting from the retainer and inserted in the first insertion hole. The first resilient legs having respective first locking fingers engaging the first locking ledges, respectively, and slidable respectively on the slanted surfaces under resiliency of the first resilient legs.

Abstract: A strap fastener for releasably connecting a belt to the body of a bag comprises a base plate adapted to be mounted on the body of the bag, and a cover plate pivotably connected to the base plate and releasably lockable on the base plate. The cover plate has at least one slot for the passage therethrough of the belt and receptive of a presser projection of the base plate. When the cover plate is locked on the base plate, the presser projection is received in the slot and urges the belt against a portion of the cover plate defining the slot to retain the belt on the strap fastener.

Abstract: A buckle assembly includes a plug member and a socket member releasably coupled together to connect opposite ends of a strap or belt. The plug member includes a cantilevered resilient tongue having a locking lug lockingly engageable with a stopper bar of the socket member to couple the plug and socket member. The socket member includes a cantilevered resilient flap having a releasing lug engageable with the locking lug to disengage the latter from the stopper bar when the resilient flap is depressed. The stopper bar is engageable with the resilient flap to prevent undue resilient deformation of the latter.

Abstract: A strap fastener includes a fastener body on which a strap is retained, and a socket member adapted to be mounted on the fabric of a bag to retain the fastener body for connecting the strap to the bag. The fastener body has a plug with an enlarged head snappingly receivable in a stepped bore formed in the socket member. The fastener body is rotatable about the axis of the plug with respect to the socket member. With this construction, the strap is connected to the bag with utmost ease and can be adjusted in a desired posture to suit with the physical characteristics of the user.

Abstract: A cord tightening device for tighening cords on anoraks, rucksacks, shopping bags, life jackets, and other bags and pouches includes a body having a pair of spaced face and back plates and a pair of spaced side walls interconnecting the face and back plates. A slider is movably disposed in the body and slidable along a guide groove defined in the face plate. The slider has a retainer for pressing cord portions against the side walls, and has step-like teeth on opposite peripheral surfaces thereof for biting engagement with the cord portions. The face plate may have a pair of cord insertion slots defined therein one on each side of the guide groove and located inwardly of the side walls, respectively, for allowing a cord to be inserted theretrough into the body.

Abstract: In a buckle comprising male and female members, releasably couplable to each other in snap action, the female member has in its side wall a pair of side walls a pair of side slits, respectively, in which a pair of resilient arms of the female member extends. The female member also has in its bottom wall a pair of transversely spaced holes into which a projection on the respective arm extends. The movement of each arm in a direction perpendicular to the general plane of the female member is restricted within the width of the respective slit, while the transverse movement of each arm is restricted within the width of the respective hole.

Abstract: A watertight slide fastener stringer comprises a series of coupling elements mounted on a watertight stringer tape along a longitudinal edge portion thereof. Each coupling element includes a pair of upper and lower halves or members disposed one on each side of the stringer tape and joined by at least one integral connector extending through the stringer tape. Each of the coupling element members has a coupling portion including a support portion disposed on a thickened sealing member which is disposed on the longitudinal tape edge, a neck portion on the support portion, and a coupling head on the support portion integral with the neck and projecting beyond the thickened sealing member. The support portion and the neck portion jointly define therebetween a pair of recesses opening away from the plane of the stringer tape for receiving therein the coupling heads of mating coupling elements.

Abstract: A cord tightening device for tightening cords on anoraks, shopping bags and other bags includes a hollow body and a slider movably disposed in the body and slidable along a guide groove defined in a face plate of the body. The slider has an annular retainer for pressing cord portions against side walls of the body, and a resilient knob cantilevered to the retainer and normally projecting through the guide groove above the face plate. The cantilevered knob is resiliently flexible toward the back plate to such an extent that the knob is substantially fully received in an aperture in the retainer. With this resilient knob, the slider can smoothly be inserted in and removed from the body without damaging the body.

Abstract: A bottom-end-stop assembly for a slide fastener comprises a pair of intercoupling male and female members of thermoplastic synthetic resin adapted to be molded on adjacent bottom ends of opposed fastener stringers. The male member has an inner longitudinal projection and a pivot pin. The female member has an inner longitudinal groove receptive of the projection, and an inwardly opening support hole receptive of the pivot pin for pivotal movement of the male member. The male member has at least one aperture in the projection so that the stringer tape is clamped between a pair of mold members so as not to become wavy during the molding. The male member also has on opposite surfaces a pair of reinforcing ridges remote from the inner longitudinal side of the male member.

Abstract: A cord fastener composed of a male member and a female member coupled together against displacement each other since laterally outwardly projecting feet of a pair of resilient legs of the male member is normally held in interlocking engagement with a pair of locking teeth on an inner surface of a hollow tubular body of the female member. For attachment of the cord fastener to a cord, the male member is displaced against the resiliency of the legs until a through-hole in a head of the male member is brought into coaxial alignment with a pair of cord insertion holes in the tubular body, thereby permitting insertion of the cord into such aligned holes. When the male member is released from the downward pressure, the male member is urged upwardly by the resilient forces stored in the legs, whereby the cord is firmly gripped by and between the male and female members against displacement.