69results about How to "Protection position" patented technology

The invention discloses a method for protecting track privacy by forwarding inquiries based on neighboring nodes in a location service and relates to the privacy protection method in the field of information security. The method comprises the following steps of: (1) sending a location service request by an authorized creditable user u by using an anonym; (2) mapping the two-dimensional coordinates of the user to a one-dimensional space by using the Hilbert space filling curve to form an ordered Hilbert sequence and finding out the nearest neighboring node uN of the inquiry user according to the Hilbert value, wherein the node is taken as a node for forwarding an inquiry request; and (3) selecting k-1 users having the Hilbert values more than or less than that of the uN at the uN to form a k anonym group with u and a set of anonym requests after finishing the location anonym at the uN. The method can better reduce the association among the location information and securely and effectively protect the location privacy and track privacy of the user and is easy to implement.

A collapsible safety rail system for providing a portable or permanent protective barrier to provide for fall prevention from elevated or other work areas. Lockable pivot assemblies are located between heavy bases and the end posts of collapsible safety rail assemblies. Removable detent pins are utilized to lock the pivot assemblies to maintain the erected position of the collapsible safety rail assemblies in protective vertical orientation or are removed to allow maneuvering of the collapsible safety rail assemblies to a minimum viewable profile position when not required for personnel protection.

A family of new bicycle shifting systems incorporate improved derailleur designs that are controlled by sealed hydraulic actuators. The shifting systems (i) a hydraulically-actuated, manually-powered front and rear derailleur shifting system, (ii) a hydraulically-actuated, power-assisted front and rear derailleur shifting system with manual control, and (iii) a hydraulically-actuated, power-assisted front and rear derailleur shifting system in which the shifting sequence for the rear derailleur is controlled automatically by pedal speed. Each of these shifting systems utilize a totally sealed, inclined linear shifting path. Environmental contaminants are prevented from entering any of the critical derailleur or control elements. The linear, inclined shifting path provides precise chain shifting, more uniform chain wrap on the rear bicycle drive sprockets, and lower chain and sprocket wear. Several different shifting control units are disclosed. An integrated shifting and braking module is also disclosed.

The invention belongs to the full position automatic welding material making field, in particular to a high strength gas protecting welding wire of synthesis mechanics good function in the welding line by adopting the rich argon gas protecting welding. The specific ingredient weight percent of the welding wire is that C is less than 0.05 percent, Si is ranged from 0.1 percent to 0.8 percent, Mn is ranged from 0.5 percent to 2.0 percent, S is less than 0.01 percent, P is less than 0.015percent, Ni is ranged from 0.5 percent to 2.0 percent, Cr is ranged from 0.05 percent to 0.50 percent , Mo is ranged from 0.1 percent to 0.5 percent, Cu is less than 0.3 percent, Ti is ranged from 0.01 percent to 0.25 percent, Re 0.05 is ranged from percent to 0.5 percent, B is ranged from 0.001 percent to 0.030 percent and remained iron. Compared with the prior art, the invention welding wire material has fine synthesis mechanics function of reasonable, simple, economic ingredient design of the welding wire material, high strength and low temperature toughness of the welding line smelt apply metal. The invention is characterized in that the wide applicable range of CO2 content in the gas is protected and the full position automatic welding has good manufacturability.

A workpiece carrier for transporting workpieces on a conveyor path comprises a carrier element for receiving a workpiece. The carrier element is connected with a plurality of support elements for absorbing weight. Further, the carrier element is connected with a guide element in order to guide the carrier element in a load-free manner or without absorption of weight. To form an active, self-propelled workpiece carrier, at least one drive assembly is provided. Drive assembly comprises a drive element resting on a conveyor path.

A cranial orthosis includes a sensor to monitor one or more conditions of an infant wearing the cranial orthosis. The cranial orthosis is preferably contoured to match the curvature of the fronto-temporal, parietal and occipital areas of an infant's cranial vault to provide protection against the acquisition of postural cranial deformities as a result of the infant's sleeping in the supine position. The orthosis is designed to be of universal fit, as determined by the infant's fronto-occipital head circumference (FOC) measurement. The interior dimensions of the orthosis can be enlarged to accommodate growth of the infant's head without requiring replacement. The sensor may detect oxygen saturation, pulse, temperature, or any other measureable condition or combination of conditions. The system includes an alarm that is triggered when a sensed condition crosses a selected threshold level.

A cranial orthosis is contoured to match the curvature of the fronto-temporal, parietal and occipital areas of an infant's cranial vault to provide protection against the acquisition of postural cranial deformities as a result of the infant's sleeping in the supine position. The orthosis is designed to be of universal fit, as determined by the infant's fronto-occipital head circumference (FOC) measurement. Moreover, the interior dimensions of the orthosis can be enlarged to accommodate growth of the infant's head without requiring replacement. The orthosis is a molded plastic appliance in the form of a shell, headband or helmet having interior surfaces that are smoothly contoured to conform in shape to the surface curvature of the occipital, temporal and parietal areas of a healthy human infant having normal cranium size, shape and symmetry. The cavity is sized to provide a close, non-interfering fit of the conformed interior surfaces in facing relation to the occipital, fronto-temporal and parietal areas of the infant's cranial vault, thereby allowing the the infant's head weight forces to spread substantially uniformly across one or more of the conformed interior surfaces while the infant is resting on a sleep surface in the supine position.

The invention provides an IoT (Internet of Things)-oriented user authentication and key negotiation system and method, and relates to the field of IoT. The system comprises a system initializing module, a key generation module and an authentication and key negotiation module, wherein the system initializing module is used for initializing an IoT system, gateway nodes, users and sensor nodes; the key generation module is used for finishing the generation of keys for participants of the system in the IoT; and the authentication and key negotiation module is used for finishing mutual authentication between a user and a server and negotiating a common session key during access to remote sensor node information. The system has the characteristics of connectivity, forward-backward safety, non-connectivity of sessions, anonymity and the like, and the requirements of the IoT are met well on the aspects of safety performance and computing cost.

The invention provides a privacy protection method for protecting information and position safety of soldiers in a field battle environment for solving certain problems. Personal information such as physical signs of the soldiers is protected by establishing safety paths between adjacent nodes through area keys. The method includes the steps of 1 a key initialization stage, 2 a network initialization stage and 3 a data transmission stage. In the key initialization stage, a whole network is divided into smaller areas, a key pool is also divided into subsets corresponding to the areas, and the adjacent nodes directly share a key to form one safety path. In the network initialization stage, in the multi-hop routing process of a data package from a source node to a base station, for achieving path-finding to the base station, a dynamic routing table needs to be established in each node. In the data transmission stage, a directional random routing scheme is introduced, in the scheme, the position of a the real source node and the position of the real base station are hidden trough a proxy source node and a pseudo base station respectively, a certain amount of false packages can be generated when the proxy source node transmits data, so that attackers are misled, and the time for the attackers to find out the positions of the soldiers is prolonged.

A ballistic protection apparatus that is lightweight and easy to operate, while at the same time maintaining the integrity of protection of the shield throughout the entire shield is provided. The technology described herein also incorporates a dual function “quick release/spreader” assembly device. The shield user can cradle the weight of the shield in the crook of the elbow region of the support inner arm, which provides exceptional stabilization when there is no time available to hook up the ballistic shield to the wearer's tactical attire. The technology described in this specification also provides a tapered platform device that provides a self-aligning weapon indexing cradle allowing the shield user to accurately return the weapon's aimed impact point back on target following inherent up and down and side to side shaking movements of a recoiling weapon during the firing process.

The invention relates to a voltage longitudinal protective method of a power distribution network with inversion type distributed power supplies. The method comprises the steps that a protective relaying device is electrified; line parameters are initialized; a practical rated capacity of each distributed power supply is initialized; a voltage setting value is calculated; latest active power reference values, collected before start of the protection, of the distributed power supplies collected before start of the protection are obtained; positive-sequence voltage phasor U<M_pcc0> and current phasor I<M> of a bus M as well as positive-sequence voltage phasor U<N_pccn+1> and current phasor I<N> of a bus N are obtained; positive-sequence voltage calculated values U<M_pcck> and U<N_pcck> of each common joint point PCC are calculated; the positive-sequence voltage difference between the positive-sequence voltage calculated values U<M_pcck> and U<N_pcck> is calculated; a maximal positive-sequence voltage difference of n+2 nodes is selected as an action value of protection; whether the action value of protection is greater than a voltage setting value is determined; and if YES, a fault in the area is determined, and protection action is implemented. Thus, the distributed power supplies can be connected to the power distribution network in a flexible and scattered way needless of extra longitudinal channels, and the method has the advantages of high applicability, reliability and practicality in engineering practice.

Adjustable spectacles article and protection method include a novel adjustable spectacle kit positioned in the interior surface of a self contained breathing mask. In one aspect, the breathing mask covers a full face of a wearer and includes a face plate permitting a wearer to view a space outside the mask. The adjustable spectacle kit includes a bracket attached to the interior surface of the mask, a lug attached to the bracket, and spectacles connected with the lug. In one aspect, the bracket defines a slot for holding the lug. In one aspect, the slot is elongated in an anteroposterior direction. In one aspect, a resilient elastomeric grommet is inserted in the slot, and the grommet frictionally engages the lug.

The invention discloses an individuation privacy protection method for sensing a semantic query based on a road network, and relates to the technical field of services specially used for users or terminal locations. The method comprises the following steps that A, a mobile user sends a query request to a credible anonymous server; B, a knowledge base of the credible anonymous server firstly converts the real identifier of the user into a fake name; C, an anonymous engine in the credible anonymous server carries out anonymity processing on a service request based on an individuation-sensitivity anonymous model; D, an anonymous road segment set RS corresponding to the user u is found in an idlist by the credible anonymous server, and the query request carrying the anonymous road segment set is sent to a service provider. The method can solve the problem that individual privacy disclosure happens to the user in the road network under the conditions of providing location-based services and combining the semantic query, the identifier, location and sensitive information of the user are protected, and the user can enjoy the fast and safe location-based services.

A self contained support kit includes a utility envelope which is adapted to be removably secured to an animal protective garment, such as a sweater or shirt, for the deployment of a support coupler to grip and hold a diaper in its intended protective position.

A sanitary device with a mechanical single hole (15) mixer (5) for horizontal top (13), said mixer (5) including an axially extended mixer body (17), a mixer cartridge (19), a housing (25) for the mixer cartridge (19) formed within the body (17) of the mixer (5), a water delivery flue pipe (33) and a lever (63) for controling capacity and temperature of the water, characterised in that said mixer body (17) is placed through said hole (15) in said horizontal top (13) and said mixer cartridge (19) is placed at least partially below said top (13) of the mixer (5).

An assembly for use with an aerodynamic decelerator for an aerial vehicle, such as a parachute, the assembly having a lead line with a first end and a second end, with the first end structured for attachment to the aerial vehicle, and an energy absorbing assembly having a first end attached to the second end of the shock cord and a second end structured for attachment to the parachute, the energy absorbing assembly in one implementation including an elongate flexible filament having first and second ends attached, the first end attached to the lead line and the second end attached to a decelerator. The first and second ends are attached to each other with rip-stitching, the first and second ends structured to break apart from each other in response to a load exerted by deployment of the parachute.

A hydraulic excavator tool adapted to be secured to the distal working end of an excavator boom including a main tool assembly with a tool framework, a spaced apart pair of connection flanges fast with the tool framework, and, a structural tubular casing integral with the tool framework extending across and through the tool framework and through the flanges, plus a rotary hydraulic actuator within the tubular casing extending between the connection flanges and providing a rotational drive motion to a drive axle extending between the connection flanges adapted to provide a controlled rotary drive motion of the axle adjacent the connection flanges, and a working tool framework fast to the axle adjacent each of the connection flanges for relative controlled rotation of the working tool framework about the drive axle between the tool framework and a working position.