49results about How to "Reduce danger" patented technology

The present invention provides, in part, a device that can fit around a fitting retention compartment of a pipe fitting, apply axial pressure to a pipe insertion component so as to flex the teeth of a fastening ring inwardly, which permits smooth insertion and removal of piping elements. In embodiments, the device comprises a two-piece device with mating threads that permit the pieces to move toward and away from one another with minute adjustments.

The present invention relates to an improved process for preparing L-phenylephrine hydrochloride 3 on an industrial scale by asymmetric hydrogenation as the key step and a special sequence of subsequent steps, using [Rh(COD)Cl]2 as catalyst and a chiral, two-pronged phosphine ligand such as (2R,4R)-4-(dicyclohexylphosphino)-2-(diphenylphosphino-methyl)-N-methyl-aminocarbonyl-pyrrolidine as the catalyst system.

The invention relates to a coal mine safety risk grading management and control method. The method comprises the following steps: 1, ; step S1: Collecting data information, the storage device is connected with the risk monitoring system. Coal mine risks are evaluated and analyzed through the risk monitoring system; obtaining safety risk data, the safety risk data is stored in the storage device; S2, a step S2 is performed; safety risk data analyzed by the risk monitoring system is transmitted to the major hazard source monitoring system; major risks in potential safety hazards are identified and evaluated; risk grading, the divided grade data is transmitted to an emergency command center. According to the invention, a major risk data unified collection interface platform is constructed through the Internet of Things technology, real-time monitoring of information collection points is realized, and once a safety risk occurs, emergency command related departments quickly respond, so thata dangerous case is always in a controllable range, major risks are monitored, and the dangerous case is reduced.

A shroud barrier is provided for shrouding an electricity distribution system to and to mounted on a substrate. The system includes a support for supporting an electrical distribution panel on a substrate and an electrical distribution panel on the support. The distribution panel includes at least one busbar arranged on the support and at least one pair of spaced apart fuse contacts each having a free end, with the free ends thereof adapted to receive a fuse. One fuse contact is connected to the busbar and the other is connected to an outlet point. The fuse contacts are arranged so that the free ends thereof hold the fuse away from the busbar. The shroud barrier includes a sheet of insulating material slotted so as to slidingly fit across the fuse contacts, and dimensioned to cover the busbar and the support, so that substantially only the free ends of the fuse contacts extend through the slot.

Thruster devices for use with a lateral thrust module and/or a flight body are adapted to achieve short action times with relatively slow burning propellant materials. Such thruster devices include a combustion chamber with a plurality of propellant grains disposed therein. At least some of the plurality of propellant grains are formed into a selected shape. Methods of making thruster devices include forming a housing comprising a first longitudinal end and an opposing second longitudinal end. The housing is formed to define a combustion chamber. A plurality of propellant grains are disposed in the combustion chamber of the housing, where each propellant grain comprises a selected shape. An igniter is coupled to the housing, which igniter is adapted to initiate a combustion of the plurality of propellant grains during deployment of the thruster device.

The invention relates to the technical field of coal mine emergency rescue, in particular to an underground coal mine tunnel type emergency rescue channel system. The underground coal mine tunnel type emergency rescue channel system comprises an emergency rescue channel, a pressure fan, an air supply barrel tape and a control chamber. The emergency rescue channel is arranged on one side of a roadway in the extending direction of an underground coal mine tunnel. The control chamber is arranged on the earth's surface, and a controller is arranged in the control chamber. A compressed air port is further formed in the upper portion of the side wall of the emergency rescue channel. One end of the air supply barrel tape is used for being communicated with the pressure fan in the control chamber, the other end of the air supply barrel tape is communicated with the compressed air port, and the pressure fan is electrically connected with the controller. When gas and coal outburst, gas explosion, fire disaster, water permeating, collapse and other dangerous cases occur in the tunnel, the pressure fan delivers ground air into the tunnel through the air supply barrel tape. Accordingly, the dangerous cases in the tunnel is relieved, the rescue difficulty of rescuers is reduced, and further the rescuers can conveniently enter the tunnel to search and rescue underground trapped persons in the roadway.

The present invention relates to the technical field of water conservancy, in particular to a flood control unmanned aerial vehicle, including a multi-rotor unmanned aerial vehicle, a camera device, a ground information collection device, an information synthesis, storage and transmission device, an instruction receiving and transmission device; At the bottom of the drone, the camera protrudes downwards and can rotate 360 ​​degrees; the ground information collection device collects embankment and water body information in real time through the corresponding frequency set; the information synthesis, storage and launch device will collect embankment information and water body information in real time Synthesized with the captured data information, stored and sent to the flood control command center. The flood control embankment patrol drone of the present invention collects embankment and water body flood control information in real time when the unmanned aerial vehicle patrols embankments, and sends them to the flood control command center, which makes flood control decisions. It can not only replace manual embankment patrol, but also can real-time Feedback, timely early warning, increase the amount and accuracy of information collection, and effectively reduce the occurrence of dangerous situations.

The invention relates to a fire smoke-discharge device. It includes sliding window opening and closing power transmission mechanism, connecting component between transmission mechanism and sliding window and motor. The opening and closing of the sliding window is driven by motor, and said motor can utilize a speed-reducing mechanism to transfer the power to transmission mechanism. Besides, said device also includes the components of speed-reducing gear group, chain, driving guide screw and limit switch, etc.

Methods, systems and apparatuses are disclosed for attracting and/or repelling animals, more particularly methods systems and apparatuses for deploying and retrieving decoys, such as, for example, waterfowl decoy displays typically used in hunting, and particularly to attract overflying waterfowl.