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 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 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.

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.

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.

A table cabinet having a power-driven lifting socket and a power-driven lifting socket are provided. The power-driven lifting socket includes a housing, a control board, a socket main body, and a lifting device. The socket main body can be driven by the lifting device to move up and down so as to extend out of a passage or retract into the passage. The socket main body may ascend or descend according to the need of use. When not in use, the socket main body can be hidden, such that the surface of the table cabinet is tidy and beautiful, and the socket main body won't be contaminated by the dust, thereby ensuring the performance for the socket.

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.

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.

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.