Abstract: A chain plate structure includes a boss protruding from a connecting hole of a connecting end of a chain plate. The boss has an injection beak corresponding to a notch of a bushing, so that lubricant can be injected into the chain plate through the notch and the injection beak to lubricate the chain for maintenance.

Abstract: A derailleur drive chain structure for downhill event operating in conjunction with a gear disk includes inner chain plates, outer chain plates, sleeves, and pins. Each sleeve is disposed between each pair of inner chain plates. Each pin is to connect each pair of abutted outer and inner chain plates. Two ends are provided on a first side of each outer chain plate. The outer edge of each outer chain plate externally to the two ends is disposed with a protruding portion to improve tensile strength and flexibility of the chain to upgrade its impact withstanding performance for improving riding safety.

Abstract: A derailleur drive chain structure for downhill event operating in conjunction with a gear disk includes inner chain plates, outer chain plates, sleeves, and pins. Each sleeve is disposed between each pair of inner chain plates. Each pin is to connect each pair of abutted outer and inner chain plates. Two ends are provided on a first side of each outer chain plate. The outer edge of each outer chain plate externally to the two ends is disposed with a protruding portion to improve tensile strength and flexibility of the chain to upgrade its impact withstanding performance for improving riding safety.

Abstract: A guiding shaft structure for a chain connector includes a black shaft and a guiding bolt. The black shaft comprises a passage with a threaded section therein and a first protruding ring, a second protruding ring and a third protruding ring on an outer surface thereof. The guiding bolt comprises an insertion section and a guiding section. The insertion section comprises grooves, a circular flange and a guiding surface. The guiding section comprises a threaded portion. The black shaft and the guiding bolt are secured with each other to form a one piece and to provide a secure connection.

Abstract: A half pitch chain structure for a show bicycle includes chain plates, sleeves, rollers, and pins. Each chain plate comprises an outer link portion at one end and an inner link portion at the opposite end. The inner link portion of one chain plate is connected with the outer link portion of another adjacent chain plate to form a slot therein. The slot has a wide section and a narrow section. The top end of each adjacent chain plate is at the same height level without any differential level.

Abstract: A chain connecting device includes a roller, a pair of inner chain plates, a pair of outer chain plates, a rivet and a fastener. The rivet has a hole at one end with inner threads for the fastener to be threaded therein. Both the rivet and the fastener each comprise an enlarged end to hold the inner chain plates and the outer chain plates together in a secure manner and to enhance the strength of the connection.

Abstract: A syringe device includes a barrel in which a stopper connected to a plunger is movably received. An engaging member is connected to a first end of the barrel and has a protrusion extending therefrom so as to be connected to a needle cannula. A hole is defined in the engaging member and the stopper has an engaging part so as to be engaged with the hole to connect the engaging member and the stopper. The plunger has a thumb rest and a stop extends from the thumb rest. A notch is defined in the plunger and the stop is received in the notch so as to allow the plunger to be completely pushed in the barrel.

Abstract: A cap assembly includes a first part for mounting to a bottle and a second part coupled to the first part, and a sucking member pivotally disposed to a top of the first part. The top of the first part has two stands, a support located between the two stands and a stop extending therefrom, wherein the support has a passage defined therethrough and extending through the top. The sucking member has a sphere member rotatably supported between the two stands and is rested on a first annular flange extending from a top of the support. The second part has two clamping members extending from a bottom thereof so that when the second part is mounted to the first part, the sucking member is clamped by the clamping members and pivoted and laid on the stop.

Abstract: A cap assembly for a bottle includes a cap member mounted to the bottle and having a top with an opening defined therein. A wall member and a flexible connecting member respectively extend from a periphery defining the opening, the flexible connecting member connected to the wall member so as to define an aperture between a top of the wall member and a top of the connecting member. A tube extends from a periphery defining the aperture. A cover is pivotally and detachably mounted to the cap member such that the tube is pushed by an underside of the cover when the cover is mounted to the cap member and the flexible connecting member is folded downwardly and the aperture is sealed by the downward folded connecting member.

Abstract: Disclosed is an audio transmission device for mounting in a monitor of a computer system and including a pair of symmetric frameworks mounted behind a front frame of the monitor at two lower or upper corners thereof so that a distance left between the pair of frameworks is about a width of a system board disposed inside the monitor. The framework each further includes a fixing arm formed at an inner side with a longitudinal groove which has a width slightly larger than a thickness of the system board to clamp the same between the pair of frameworks, a connecting arm extended from one side of the fixing arm, a resonant cabinet connected to the fixing arm via the connecting arm, and shock-absorbing arms extended from two side walls of the resonant cabinet for locking to the front frame of the monitor. The resonant cabinet is partitioned inside it to form a high-tone and a low-tone guide paths. The high-tone guide path is formed at a base portion with supporting grooves for a speaker to mount thereon.