Abstract: The present invention relates to an acrylated semi-crystalline hyperbranched polyurethane oligomer and a preparation method thereof, which is characterized in that on the basis of the synthesis of hyperbranched polyurethane oligomer, it adopts a two-step process to make modifications to form a methacrylic and/or acrylic double bond and a long carbon chain with a carbon atom number higher than 10 or a benzene ring or a naphthalene ring at the terminals. The obtained oligomer has a lower melting point and a higher glass transition temperature and can be cured by means of radiation, and the curing rate is high enough to effectively improve production efficiency and save energy to form a cured film having a higher hardness and excellent thermal stability. The raw materials used in the method of the invention are easily obtained, and the method is suitable for large-scale production in industry.

Abstract: A spraying gun includes a gun body, a handle, a sealing gasket, a connecting member, a control valve, a control handle, an outer control tube, a control shaft, a catch block, an inner control tube, a control ring, a drive ring, and a nozzle assembly. The nozzle assembly includes a nozzle head, a first mounting ring, a second mounting ring, and a rotation ring. Thus, the spraying gun has a three-stage control effect to provide different water output functions so as to fit a user's practical requirements, thereby enhancing the versatility of the spraying gun.

Abstract: The present invention relates to a changeable mirror surface that comprises anti-fog area and non-anti-fog area, wherein the anti-fog area will cooperate with the non-anti-fog area to form a predetermined pattern when condensation of water forms on the mirror surface.

Abstract: A manual carwash nozzle structure includes a grip body, a barrel member, and a spray nozzle. The barrel member is formed of a connection body, an adjustment valve, and a detergent container. The connection body is provided with a water inlet in communication with a hose connector of the grip body, and a water outlet in communication with the water inlet and the spray nozzle. A bypass is jointly provided by the connection body and the adjustment valve, so as to allow a portion of incoming water in the water inlet to enter the detergent container in which a water-detergent mixture is formed. The mixture is let out of the container into the water outlet via the bypass.

Abstract: An ohmic contact of semiconductor and its manufacturing method are disclosed. The present invention provides a low resistivity ohmic contact so as to improve the performance and reliability of the semiconductor device. This ohmic contact is formed by first coating a transition metal and a noble metal on a semiconductor material; then heat-treating the transition metal and the noble metal in an oxidizing environment to oxidize the transition metal. In other words, this ohmic contact primarily includes a transition metal oxide and a noble metal. The oxide in the film can be a single oxide, or a mixture of various oxides, or a solid solution of various oxides. The metal of the film can be a single metal, or various metals or an alloy thereof. The structure of the film can be a mixture or a laminate or multilayered including oxide and metal. The layer structure includes at least one oxide layer and one metal layer, in which at least one oxide layer is contacting to semiconductor.

Abstract: A spraying gun includes a gun body, a water guide pipe, a water control bar, and a water control switch. Thus, the driven portion of the water control bar is pushed by either one of the engaging portions of the eccentric urging face of the water control switch, so that the water control bar is moved in the receiving space of the water guide pipe step by step so as to control the water flow in the water guide pipe in a multi-stage manner, thereby facilitating the user regulating the water flow rate of the spraying gun so as to save the water source.

Abstract: A cleaning brush assembly includes a control handle, an extension pipe mounted on a second end of the control handle, a angle adjustable pipe module mounted on the extension pipe, and a cleaning portion mounted on the angle adjustable pipe module. The control handle includes a connecting member, a control seat, a control shaft, a switch member, and a control valve. Thus, the cleaning water is introduced into the primary flow channel for flushing use and can also be mixed with the detergent in the primary flow channel for cleaning use by rotation of the control valve, thereby facilitating a user operating cleaning brush assembly.

Abstract: A garden hose nozzle with a rotary outlet includes a hose nozzle, a hose-connecting, and a water valve. The features of the present invention lie in: the rotary outlet is of a rotary structure. The front end of the hose nozzle is provided with a passage notch, where the connector of the rotary outlet can cross the hose nozzle, and then the insert notch. After the fixation by localizers, a whirling state that the connector and rotary outlet rotate round the insert notch will take shape, so that the hose nozzle with similar grip state can offer flexible applications through variable spraying angle of its whirling design, with the purpose of meeting the customer demands.

Abstract: A spraying gun includes a gun body, an adjusting device, a guide pipe, and a spraying nozzle. The adjusting device includes an rotatable knob, and a connecting member. Thus, the sprinkling manner of the spraying gun is adjusted by rotating the rotatable knob of the adjusting device, thereby facilitating a user operating the spraying gun. In addition, the user controls the sprinkling manner of the spraying gun easily, so that the water injected outward from the spraying gun is controlled exactly, thereby preventing the injected water from wetting the user's clothes.

Abstract: A sprinkler includes a shunt, a water-control shaft, a switch and a detergent storage pipe, wherein the shunt is provided with axial hole vertically connected to radial notch. Both sides of this shunt are vertically equipped with diversion holes. The top ends and bases of both diversion holes are separately connected to radial notch; the rotatable water-control shaft is linked to the radial notch of shunt. The middle section of the rod is provided with a concave main notch and a water panel. Both sides of main notch are equipped with two secondary notches. The radial positions of secondary notches are staggered, of which opposite internal edges of secondary notches are connected to main notch.

Abstract: A spraying gun includes a water inlet connector, a connecting member, an adjusting member, a detergent tube, a water conducting tube, and an extension pipe. Thus, the water flow rate of the spraying gun is adjusted by rotation of the adjusting member, thereby facilitating a user regulating the water flow rate of the spraying gun. In addition, the water is mixed with the detergent by rotation of the adjusting member to provide a cleaning effect.

Abstract: A pistol-type nozzle comprises a hand grip, a barrel, a spray head, and a trigger. The barrel has a muzzle which is provided with two retaining slots, each being formed of a guide portion and a retaining portion. The retaining portion is provided with a retaining ridge to arrest a retaining projection of a connection end of the spray head. The trigger is provided with a cover which has a soothing effect.

Abstract: A sprinkler nozzle structure comprises a grip, a barrel, a spray nozzle, a trigger device, and a flow control device. The trigger device is fastened with the grip for clogging and unclogging a water channel of the grip. The flow control device is fastened between the grip and the barrel for regulating the flow of water moving from the water channel of the grip into a water channel of the barrel.

Abstract: A sprinkler includes a handle, a nozzle, and a connection structure for connecting the nozzle to the handle. The connection structure has an extension pipe and a connection member. The extension pipe is formed of an outer tube fastened at a bottom end to the handle, and an inner tube fastened at a top end to the nozzle. The connection member is formed of a first connector and a second connector. The first connector is engaged with a top end of the outer tube and is engaged with the second connector. The inner tube is slidably fitted at a bottom end into the top end of the outer tube through the first connector such that the inner tube is intimately embraced by the first connector.