33results about How to "Potential safety hazard" patented technology

The present invention relates to a wireless remote control for dental equipment, such as dental scaler tools, dental drills, prophy angles and other rotary instruments. The wireless control switch can control the on and off state of the dental tool, or it can also be programmed to control the speed of the tool by a switch on the tool. The wireless control switch can be in the form of, for example, a foot switch, and replaces manual and foot operated controls formerly connected by cables to the dental tools. This removes a potential safety hazard in the dentist's office and makes the equipment control more versatile and easier to adapt to various office conditions. The wireless control can be battery powered, further eliminating the need for cables.

The present invention relates to a wireless remote control for dental equipment, such as dental scaler tools, dental drills, prophy angles and other rotary instruments. The wireless control switch can control the on and off state of the dental tool, or it can also be programmed to control the speed of the tool by a switch on the tool. The wireless control switch can be in the form of, for example, a foot switch, and replaces manual and foot operated controls formerly connected by cables to the dental tools. This removes a potential safety hazard in the dentist's office and makes the equipment control more versatile and easier to adapt to various office conditions. The wireless control can be battery powered, further eliminating the need for cables.

The present invention disclose a pumping unit driven by a linear motor, comprising a guide rail support in the form of a frame structure, a mover of the linear motor provided with slide blocks, said slide blocks engages guide slide ways used for said mover and mounted on inner sides of said guide rail support, six stators of the linear motor, said stators are mounted on inner sides of said guide rail support, a chain wheel disposed at the top of said guide rail support, a chain, said chain is connected to an upper end of said mover of the linear motor at one end, passes said chain wheel and is then connected to a pumping slick rod of a wellhead device at the other end thereof, a counterweight, and a counterweight chain, said counterweight chain is connected to a lower end of said mover at one end, passes a bottom chain wheel disposed at the bottom of the guide rail support and a top chain wheel disposed at the top of the guide rail support sequentially and is then connected to said counterweight at the other end thereof. Since the pumping unit is disposed at a side of the wellhead, it is convenient for operations and eliminates possibility of occurring of accident without changing the original wellhead.

The present invention provides air fans with enhanced oscillating mechanism. In one aspect of this invention, the air fan comprises main propeller (19), a main motor (24) operably connected to the main propeller (19), driving the main propeller (19) to rotate to generate air stream, and a wind guide device composed of a wind guard plate (35) and a wind reject plate (21) and surrounding the main propeller (19). An auxiliary motor (53) operably connected to the wind guide device via a rotation-oscillation shifting device, for driving the wind guide device to oscillate to change the wind direction. In a further aspect of this invention, only the motor for the oscillating mechanism is in motion to drive the relatively lighter wind channel while the enclosure and motor for the wind wheel remain static during operation. The air fans feature less safety hazard, a prolonged service life, a lower noise and easier operation.

Systems and methods for hitch mounted cargo carriers are disclosed herein. The cargo carriers can comprise a storage assembly, leg assemblies, a hitch assembly, and a handle assembly. Advantageously, the cargo carriers can easily mate with the hitch of a car or truck, be transported via the car or truck, and then be detached and wheeled to a desired location, such as a hotel room or tailgating spot. The leg assemblies and hitch assembly of the cargo carriers can be foldable for easy transport and storage.

A dual-directions braking method of a disc brake, a braking mechanism and applications thereof are applied in fields of automobiles, trains and aircrafts. The dual-directions braking mechanism includes a crankshaft having three concentric sections and two eccentric sections, two friction discs, a friction disc ring and at least a pair of brake calipers and friction pads, wherein the two eccentric sections are respectively provided between each neighboring two of the three concentric sections and mutually disposed at 180°; the two friction discs are respectively provided on the two eccentric sections; the friction disc ring is provided on the main section between the two eccentric sections. Through a translationally rotating friction by the two friction discs respectively with the friction disc ring and with the friction pads of each pair of brake calipers, a backward braking moment and a forward braking moment are simultaneously generated on the main sections, so as to enhance a braking performance twice while keeping a wheel friction load unchanged, compared to conventional backward brakes. An automobile dual-directions braking system including the dual-direction braking mechanism is able to accomplish electronic safety control functions of DABS, DEBD and DESP, and greatly improve transportation safety.

A vacuum cleaner and a control method thereof, wherein the vacuum cleaner includes a vacuum cleaner body, a floor brush assembly, and an extension tube connecting the two together. The floor brush assembly comprises a plurality of different floor brushes for performing different cleaning work. The vacuum cleaner is further provided with a control unit and a detection unit. The detection unit comprises a floor brush current detection module for detecting current passing through an electric motor in a floor brush. The floor brush current detection module sends detection signals to the control unit, and the control unit controls the electric motor to maintain an operating state or stop the operating state according to the detection signals.

A dual-directions braking method of a disc brake, a braking mechanism and a braking system thereof are applied in fields of automobiles, trains and airplanes. The dual-directions braking mechanism includes a crankshaft having three concentric sections and two eccentric sections, two friction discs, a friction disc ring and at least a pair of brake calipers and friction pads, wherein the two eccentric sections are respectively provided between each neighboring two of the three concentric sections and mutually disposed at 180°; the two friction discs are respectively provided on the two eccentric sections; the friction disc ring is provided on the main section between the two eccentric sections. Through a translationally rotating friction by the two friction discs respectively with the friction disc ring and with the friction pads of each pair of brake calipers, a backward braking moment and a forward braking moment are simultaneously generated on the main sections.

The present invention discloses an apparatus and method for patrol-inspection of a rigid cage channel. The patrol-inspection apparatus comprises a moving member, a transmission member, a driving member, a guide member, and a housing on a main bottom plate. The driving member comprises a tilt sensor and a pressure sensor connected to a microcontroller, the microcontroller is connected to a driver, the driver is connected to a brushless DC motor, and an output shaft of the brushless DC motor is provided with an optical encoder connected to the driver; The moving member comprises a driving output shaft and a driven output shaft, wheel flanges on the driving output shaft and the driven output shaft are each connected with a wheel hub, a permanent magnet is provided in the wheel hub, and a rubber skin is provided on the outer side of the wheel hub; The transmission member comprises a worm connected with the output shaft of the brushless DC motor, a worm wheel on the driving output shaft and meshed with the worm, timing pulleys on the driving output shaft and the driven output shaft, and a timing belt wound on the timing pulleys. The guide member comprises a guide wheel. The present invention increases inspection speed of the rigid cage channel and improves indirectly the production efficiency of the coal mine enterprise.

It relates to the engineering technology science, in particular to a novel track layer for urban rail traffic engineering and its construction method. The novel track layer comprises lifting and walking trolleys, a connecting truss beam, a track running mechanism and a supporting structure. Horizontal extending and vertical supporting structures of each lifting and walking trolley are operated firstly so as to lift the whole novel track layer to a height at which a track material is hoisted and unloaded. A hoisting car is used to lift up the track material to leave from a flat trunk and a material supporting cushion. The novel track layer continues to walk forward to a designed mounting position of a track section, and then the track material is unloaded. Steel tracks are connected and a temporary track section support is mounted to fix a newly mounted track section.

A power socket disposed on a power supply casing of the electronic device to provide power for the electronic device through a power cord is disclosed. The power socket includes an insulating body, three input end contacts disposed at first side of the insulating body, three output end contacts including a grounding contact disposed at second side of the insulating body, and a rigid connector connected between the grounding contact and a protective grounding pin of the power supply casing. The invention simplifies the connection between the power socket and the power supply casing, thereby simplifies the manufacturing process of the power socket and eliminating the potential safety hazard.

Provided is a vehicle-road cooperation street lamp for an urban road. The vehicle-road cooperation street lamp for an urban road comprises a vehicle-road cooperation street lamp body, wherein a first supporting plate is transversely arranged on the front side of the top of the vehicle-road cooperation street lamp body, a transmission cavity is transversely formed in the first supporting plate, a first electric telescopic rod is transversely arranged in the inner cavity of the transmission cavity and located on the outer wall of the vehicle-road cooperation street lamp body, and a rack plate is transversely arranged on the front side of the first electric telescopic rod and located in the transmission cavity.

The disclosure discloses a refrigerant control method for a dehumidifier. The method includes that: an environment temperature and an evaporator tube temperature of a dehumidifier are detected; according to the environment temperature and the evaporator tube temperature, a refrigerant leakage amount of the dehumidifier is obtained; and according to the refrigerant leakage amount, it is judged whether the dehumidifier has a refrigerant fault. The disclosure also discloses a refrigerant control apparatus for a dehumidifier.

A control valve includes a valve body, a valve plug, two adjusting elements and two operating members. The valve body has a valve hole defined through the valve body and further defines an inlet hole and two outlet holes respectively communicating with the valve hole. The valve plug is movably assembled within the valve body. Two ends of the valve plug are respectively exposed to the outside of the valve body. The two adjusting elements are respectively mounted to two ends of the valve body and respectively adjustably resist against two ends of the valve plug. The two operating members are respectively fixed to the two adjusting elements for driving the two adjusting elements to move the valve plug within the valve hole of the valve body, and thereby controlling the control valve to switch between an open state and a closed state.

The disclosure discloses a technology for communication between different instant messaging protocols and SIP protocol, the technology comprises a conversion method, a gateway and a device, wherein inputting first information using an instant messaging non-SIP standard protocol or second information using a SIP standard protocol; converting the first information using the instant messaging non-SIP standard protocol into the second information using the SIP standard protocol, or converting the second information using the SIP standard protocol into the first information using the instant messaging non-SIP standard protocol; outputting the second information using the SIP standard protocol or the first information using the instant messaging non-SIP standard protocol. By means of the method, the disclosure provides technical support for audio, video and information communication between instant messaging systems and communication systems of the SIP standard protocol.

Provided is an optimized decision-making system for multiple ore dressing production indexes based on a cloud server and mobile terminals, including mobile intelligent terminals, a cloud server, a mobile industrial private cloud server, a collecting computer and process controllers PLC or DCS. The mobile industrial private cloud server calculates out multiple decision-making result solution sets; the intelligent mobile terminals determine the final decision-making results; the mobile industrial private cloud server calculates out process control set values; the mobile intelligent terminals determine the final process control set values; and the process controllers PLC or DCS control equipment on a production line for production according to the final process control set values. The present invention further provides an optimized decision-making method for multiple ore dressing production indexes adopting the optimized decision-making system.

A device with a steam generation function comprises a water storage cavity, a heating cavity with a steam outlet, a guide channel for communicating the water storage cavity with the heating cavity, and a heating element configured in the heating cavity, wherein the heating cavity has a first chamber and a second chamber communicated with the first chamber, and the first chamber is located on one side of the second chamber; and the heating element is configured in the first chamber, and the steam outlet is formed in the second chamber and is spaced from the first chamber in the horizontal direction by a preset first distance to prevent boiling water in the first chamber from being ejected via the steam outlet. The device provided by the present invention is safe in use.

A control valve includes a valve body, a valve plug, two adjusting elements and two operating members. The valve body has a valve hole defined through the valve body and further defines an inlet hole and two outlet holes respectively communicating with the valve hole. The valve plug is movably assembled within the valve body. Two ends of the valve plug are respectively exposed to the outside of the valve body. The two adjusting elements are respectively mounted to two ends of the valve body and respectively adjustably resist against two ends of the valve plug. The two operating members are respectively fixed to the two adjusting elements for driving the two adjusting elements to move the valve plug within the valve hole of the valve body, and thereby controlling the control valve to switch between an open state and a closed state.

Disclosed is an implanted device, comprising a device base body and an active drug, wherein the device base body is pure zinc and / or a zinc alloy, the zinc content in the device base body is 0.1-100%, and the active drug comprises anti-allergic drugs. After the implantation of the implanted device into the human body, the surrounding tissues of the implant would not have a clear hypersensitive reaction due to the presence of the anti-allergic drugs, and the implanted device can be used to be implanted into the body for supporting organ chambers, to fill the hollow chambers of the organs and tissues or as orthopaedic implants etc.

A capacitive igniter with a flameout time-delay function is provided. A first terminal of a flameout time-delay circuit is electrically connected with a common connecting point of a charge-discharge circuit and a charging coil L1. A second terminal of the flameout time-delay circuit is electrically connected with a trigger circuit. A third terminal of the flameout time-delay circuit is grounded through a flameout switch S1. By means of the capacitive igniter with the flameout time-delay function, it can be guaranteed that an engine is stably and reliably shut down under the action of the flameout time-delay circuit when the engine needs to be shut down even if the flameout switch S1 is switched off in the flameout process, and the potential safety hazards that the engine works again due to the fact that the flameout switch S1 is switched off in the flameout process can be effectively avoided.

Disclosed is an electric starter with a manual turning function. A main shaft, a drive gear mechanism, a shift fork, an electromagnetic relay guide rod and a first return spring are arranged in a housing of the electric starter. A gear shifting mechanism comprises a force receiving component which extends out of the housing of the electric starter and serves as an external force applying point so as to promote the electromagnetic relay guide rod to move rightwards, a normally closed switch for cutting off a power supply of the electric starter when the force receiving component moves to an extreme position, a positioning component for locking the force receiving component when the force receiving component moves to the extreme position, and a first return component which enables the force receiving component to automatically returns to an original state when the force receiving component is unlocked. The main shaft is indirectly driven to rotate by the turning mechanism via a transmission mechanism or directly driven to rotate by the turning mechanism via a turning tool. An improvement is made to a structure of a traditional electric starter without affecting existing functions thereof, i.e., a function of manual turning is added. Therefore, a flywheel gear of a motor can be precisely positioned during maintenance so as to improve efficiency and eliminate potential safety hazards.

Disclosed is an implanted device, comprising a device base body and an active drug, wherein the device base body is pure zinc and / or a zinc alloy, the zinc content in the device base body is 0.1-100%, and the active drug comprises anti-allergic drugs. After the implantation of the implanted device into the human body, the surrounding tissues of the implant would not have a clear hypersensitive reaction due to the presence of the anti-allergic drugs, and the implanted device can be used to be implanted into the body for supporting organ chambers, to fill the hollow chambers of the organs and tissues or as orthopaedic implants etc.

The method in the disclosure is achieved by chemically reacting diluted sulfuric acid generated when industrial sulfate titanium white powder production with a titanium raw material, and controlling an acid / titanium ratio and an iron / titanium ratio so as to produce the nano catalytic wastewater treatment agent. When being used for treatment of dyeing wastewater and other alkaline wastewater, by virtue of alkaline and dilution environment in wastewater, the nano catalytic wastewater treatment agent is subjected to self-fitting hydrolysist to produce a new ecological nano titanium dioxide ultrafine particle as a catalyst for decomposing organic matters in wastewater so as to decompose the organic matters into carbon dioxide and water; a decomposed and oxidized hydrated iron compound is used as a flocculation and adsorption nano particle, achieving the purpose of removing organic matters in wastewater.

An embedded plate frame structure, having a polygonal or arc-shaped frame body; the polygonal frame body includes at least a first frame, a second frame and a third frame; a panel is installed on the frame body; the first frame, the second frame and the third frame are formed by metal profiles; the metal profiles are provided with accommodating grooves; peripheral sides of the panel are respectively inserted into the corresponding accommodating grooves of the first frame, the second frame and the third frame and extruded, such that the panel is connected with the first frame, the second frame and the third frame into a whole; the metal profile is provided with a reinforcing portion, and the reinforcing portion is integrally formed with an outer side of the metal profile.

The invention discloses a mechanical performance testing device and a hydraulic control system thereof. The instrument comprises a base, a fixing means, a first testing means and a second testing means. Wherein the base is connected with the fixing means, each of the first testing means and the second testing means is configured to cause the fixing means to move in various directions. And the instrument can simultaneously apply multiple forces and torques on the element, such that the different stiffness characteristics of the element can be tested simultaneously. The hydraulic control system comprises fuel tank, oil pump and control valves. And the fuel tank, the oil pump and the control valves connect successively. The mechanical performance testing device with hydraulic control system can improve efficiency of the test, reduce the working intensity of inspector, increase the security in detection process, and improve the accuracy of measurement results.

The present invention discloses an apparatus and method for patrol-inspection of a rigid cage channel. The patrol-inspection apparatus comprises a moving member, a transmission member, a driving member, a guide member, and a housing on a main bottom plate. The driving member comprises a tilt sensor and a pressure sensor connected to a microcontroller, the microcontroller is connected to a driver, the driver is connected to a brushless DC motor, and an output shaft of the brushless DC motor is provided with an optical encoder connected to the driver; The moving member comprises a driving output shaft and a driven output shaft, wheel flanges on the driving output shaft and the driven output shaft are each connected with a wheel hub, a permanent magnet is provided in the wheel hub, and a rubber skin is provided on the outer side of the wheel hub; The transmission member comprises a worm connected with the output shaft of the brushless DC motor, a worm wheel on the driving output shaft and meshed with the worm, timing pulleys on the driving output shaft and the driven output shaft, and a timing belt wound on the timing pulleys. The guide member comprises a guide wheel. The present invention increases inspection speed of the rigid cage channel and improves indirectly the production efficiency of the coal mine enterprise.