Abstract: The present invention provides an adjustable hinged door closer, including a seat with the first and second cylinders, and a first and a second elastic linkage unit. A double-threaded regulator is incorporated onto the first connecting rod of the first elastic linkage unit, so as to change the compression of the spring and regulate the closing/restoring force of the door body. The double-threaded column of the double-threaded regulator has a double-thread that shifts to two thread pitches by just making one rotation, thus facilitating the fine-tuning easily. The elastic linkage unit and the regulator are structurally configured to be assembled externally, and then mated with the connecting seat of the door closer.

Abstract: A shower stall tray includes a plastic shell defining an outer surface and a cavity that is filled with a light weight resinous material and a structural member having a density less than the resinous material. The plastic shell is formed to include a visible surface and a backside surface. The backside of the plastic shell defines an open cavity that is filled with a resinous material. The resinous material provides structural rigidity and the solid substantial feel providing a favorable perception of quality. The structural member not only provides structural support for the shower tray, but also displaces resinous material, thereby reducing the amount of resinous material required to fill the open cavity.

Abstract: The present invention provides an adjustable hinged door closer, including a seat with the first and second cylinders, and a first and a second elastic linkage unit. A double-threaded regulator is incorporated onto the first connecting rod of the first elastic linkage unit, so as to change the compression of the spring and regulate the closing/restoring force of the door body. The double-threaded column of the double-threaded regulator has a double-thread that shifts to two thread pitches by just making one rotation, thus facilitating the fine-tuning easily. The elastic linkage unit and the regulator are structurally configured to be assembled externally, and then mated with the connecting seat of the door closer.

Abstract: A light emitting diode (LED) lighting device has a base, a hood, an LED module, a light gathering element and a lens. The base has a container having an inner bottom. The inner bottom comprises a parallel surface and a mounting surface being connected to the parallel surface at an included angle. The hood has a reflective inner surface and is mounted in the container of the base. The LED module is mounted on the mounting surface of the container in the base, is covered by the hood and emits light beams at various angles. The light gathering element is mounted on the LED module to reflect light beams not emitted directly to the inner surface of the hood to ensure a greater percentage of light is reflected by the reflective surface to increase brightness of the LED lighting device.

Abstract: A vehicle LED lamp controller connected between one DC power source and multiple LED elements has a starting circuit, a preheating circuit and a current limitation circuit. The starting circuit is connected to the power source through the preheating circuit and connected to the multiple LED elements. The preheating circuit provides a continuous small current to the multiple LED elements to preheat the LED elements when the preheating circuit detects the temperature environment is low. The current limitation circuit is connected between the DC power source and multiple LED elements to automatically connect or disconnect a connection between the multiple LED elements and the DC power source according to changes of current supplied to the multiple LED elements. Therefore, the present invention provides a safety circuit loop.

Abstract: A light emitting diode (LED) lighting device has a base, a hood, an LED module, a light gathering element and a lens. The base has a container having an inner bottom. The inner bottom comprises a parallel surface and a mounting surface being connected to the parallel surface at an included angle. The hood has a reflective inner surface and is mounted in the container of the base. The LED module is mounted on the mounting surface of the container in the base, is covered by the hood and emits light beams at various angles. The light gathering element is mounted on the LED module to reflect light beams not emitted directly to the inner surface of the hood to ensure a greater percentage of light is reflected by the reflective surface to increase brightness of the LED lighting device.

Abstract: A light guide device has a body and multiple grooves. The body has a radiation surface and a flat surface formed oppositely to the radiation surface. The grooves are formed inward from the flat surface into the body, and each groove is cambered, is separated from adjacent grooves with intervals and has a curvature. The grooves in a center segment of the body have the same curvature larger than the curvatures of other grooves. When light beams emit to the grooves, the light beams are refracted toward and outward the radiation surface by the grooves. Larger curvature of the groove results in smaller scatter angle of the light beams refracted by the groove. The refracted light beams having smaller scatter angle result in higher illumination.

Abstract: A illuminating ring includes an annular body with an arcuate front face, a flat rear face and having multiple grooves defined in the flat rear face and an illuminating element mounted on the flat rear face to illuminate the annular body such that the annular body is able to substantially glow evenly due to groove arrangement in the annular body.

Abstract: A vehicle LED lamp controller connected between one DC power source and multiple LED elements has a starting circuit, a preheating circuit and a current limitation circuit. The starting circuit is connected to the power source through the preheating circuit and connected to the multiple LED elements. The preheating circuit provides a continuous small current to the multiple LED elements to preheat the LED elements when the preheating circuit detects the temperature environment is low. The current limitation circuit is connected between the DC power source and multiple LED elements to automatically connect or disconnect a connection between the multiple LED elements and the DC power source according to changes of current supplied to the multiple LED elements. Therefore, the present invention provides a safety circuit loop.

Abstract: A shower stall tray includes a plastic shell defining an outer surface and a cavity that is filled with a light weight resinous material and a structural member having a density less than the resinous material. The plastic shell is formed to include a visible surface and a backside surface. The backside of the plastic shell defines an open cavity that is filled with a resinous material. The resinous material provides structural rigidity and the solid substantial feel providing a favorable perception of quality. The structural member not only provides structural support for the shower tray, but also displaces resinous material, thereby reducing the amount of resinous material required to fill the open cavity.

Abstract: A sealing device includes a body part for irremovably receiving the shank of a bolt. The body has a barrel for receiving the bolt, a resilient clip being provided within the barrel for locating behind a shoulder of the bolt. The clip has a head having a widenable gap formed there-through, the head being attached to legs at either side which locate against the sides and bottom of the interior of the barrel.

Abstract: The application describes a sealing device of the type comprising a body part for irremovably receiving the shank of a bolt, the body comprising a barrel for receiving the bolt, a resilient clip being provided within the barrel for locating behind a shoulder of the bolt, wherein the clip comprises a head having a widenable gap formed there-through, the head being attached to legs at either side which locate against the sides and bottom of the interior of the barrel.

Abstract: A door closer includes a casing having a recess in which a base is received, and a first cylinder and a second cylinder are in communication with the recess. A passage is in communication between the first and second cylinders so as to allow the hydraulic oil to flow between the two cylinders. The base includes a driving shaft for being connected to a door. A first rod and a second rod are pivotably connected to the base and respectively inserted in the first and second cylinders. A threaded rod is connected to a distal end of the first rod and a first spring is mounted to the first rod and the threaded rod. A sleeve is threadedly engaged with the threaded rod and an operation rod is securely connected to the sleeve so that when rotating the operation rod, the first spring is adjusted by moving the sleeve relative to the threaded rod.

Abstract: The present invention relates to an improved structure of hydraulic door closer for easier operation and effectively eliminate oil leakage that allows fast adjustment of the of the spring load to the status of expected door closing speed by having provided on one connecting rod in a linkage base a pressure regulation mechanism for varying spring load, and having a rotation rod used to drive the spring in said mechanism to forthwith expose outside a flange of a hydraulic cylinder so to facilitate spring load regulation directly by turning of the rotation rod.

Abstract: An improved rear derailleur for changing the gear ratio of a bicycle is disclosed. It includes a fixed member, a movable member, a parallelogram mechanism connecting the fixed member with the movable member, and a cable adjusting screw which is screwed to a screw socket fixed on the fixed member. The cable adjusting screw is connected to a first end of a cable, wherein the cable has a second end fixed to a movable member. The cam member comprises a guiding surface for guiding the cable between the cable adjusting screw and the movable member. The guiding surface of the cam member is structured substantially coinciding a portion of a fictitious circle centered at a rotating pin which connects an outer linkage of the parallelogram with a second end of the fixed member.

Abstract: The present invention relates to a bicycle speed change lever apparatus which is mounted near the handlebar of a bicycle. A lever apparatus is used for pushing a ratchet member, allowing the ratchet member to produce a positive or negative rotation, which further drives a cable-pulling member, thus allowing the cable to be tightened or relaxed by the cable-pulling member to accomplish an in or back shift. A position maintaining mechanism is also provided for effectuating the shift change, and the cable is allowed to maintain a certain amount of tension. The speed change lever apparatus eases the shifting operation and makes the in shift or back shift more precisely controlled.

Abstract: A gear shifting device for a multi-speed bicycle includes a sleeve member having a flange to one side of which a drum housing is connected and to another side of which a rotary grip member is connected by means of a locking and returning device. A ratchet wheel is put over and around the sleeve member within the drum housing, a transmission steel cord reel is connected to one side of the ratchet wheel and is fixed to the sleeve member by a pullback spring. Two ratchet pawls are separately pivotally connected to the rotary grip member and the sleeve member, each having a pawl spring fixedly connected thereto to cause a pawl end of each ratchet pawl to normally contact the ratchet teeth of the ratchet wheel. A lever member is used for pushing the ratchet pawls is located within the drum housing and has a push lever extending through a slot formed on the drum housing and two projections for pushing the two ratchet pawls.

Abstract: A speed indicator for bicycles for indicating the shifting action of the bicycle and a speed sign at each state of shift includes a driving wheel driven by a takeup reel of a shifting device, a resilient strip driven by the driving wheel, and a track along which the resilient strip may displace. When the resilient strip displaces along the track, a shift sign pre-formed on the resilient strip may be shown through an indicating element provided on the track. The resilient strip may be adapted for use in vertically or horizontally oriented tracks of any construction, and their assembly is easy. The driving wheel further includes a compensation mechanism for ensuring clear indication of the indicated sign on the resilient strip.

Abstract: This invention relates to a rotary shifter of a bicycle including: a fixing seat mounted on the handlebar of the bicycle; a rotary lever mounted on the fixing seat on an identical shaft axis as the handlebar; a drag member for driving a derailleur cable to enable a derailleur to change gears; a limit member for driving the drag member to engage in linear movement within a specific stroke; a rotary member for being driven by the rotary lever; a screw driving member located on the rotary member for driving the drag member to engage in linear movement along the specific stroke; a locating mechanism for locating the rotary member at an angular position corresponding to each gear of the derailleur; and an over shift device for enabling the drag member to produce extra displacement necessary for over shift of the derailleur to change gears.