5850results about How to "Close contact" patented technology

A system and method for balancing the load on virtual servers managed by server array controllers at separate data centers that are geographically distributed on a wide area network such as the Internet is described. The virtual servers provide access to resources associated with a domain name request by a client program. When a Primary Domain Name System (DNS) determined the requested domain name is delegated to a EDNS, the EDNS employs metric information and statistics to resolve an IP address for a virtual server that is selected by the EDNS to optimally balance the load and provide access to resources associated with the domain name. The EDNS may load balance name servers. Additionally, the name server load balancing system may bridge disparate content delivery networks. Internet addresses are divided into geographical information that is used to delegate traffic. Also, metric information is collected and analyzed to help distribute the traffic.

Medical devices and related methods for closing a perforation in a bodily wall The medical device generally includes a suture having opposing first and second ends and a set of visceral anchors. Each visceral anchor includes a crossbar having opposing ends and a suture slidably attached thereto. Each visceral anchor is passed through the bodily wall adjacent the periphery of the perforation. The ends of the suture are tensioned to reduce the distance between the visceral anchors and compress the bodily wall around the perforation. The ends of the suture are secured to maintain the compression of the bodily wall and close the perforation.

The invention discloses a sealing ring, which comprises a base body, a first elastic element and a support element used for supporting, wherein the base body is provided with a groove, the support element is fixedly arranged in the groove, the first elastic element is arranged between the support element and the inner side wall of the groove in a clamping way, and in addition, the first elastic element exerts the force in the direction towards the axis center when receiving the impact by fluid. When the sealing ring provided by the invention is adopted, and when the sealing ring receives the impact by the fluid, on one hand, the base body has a certain impact resistance effect on the fluid, and on the other hand, the elastic element receives the impact effect of the fluid and exerts the force in the direction towards the axis center on the base body, so that the contact of the base body and the part passing through the shaft hole is tighter, so that a good sealing effect is achieved. Therefore the sealing ring has the excellent high-pressure fluid dynamic sealing performance, and in addition, the service life is long. The invention also discloses a sealing device comprising the sealing ring.

A closed multi-room fluidized bed sludge drying method is provided, which is a sludge drying method having the advantages of simple equipment structure, convenient operation, strong sludge adaptability, high thermal efficiency, safety, continuity, stability, etc. After the mechanically dewatered sludge is mixed with the back-mixed sludge, the mixture is dried room by room in an inert particles multi-room fluidized bed dryer (3). The first room and the second room of the inert particles multi-room fluidized bed dryer (3) adopt inert particles (f) as heat storage medium. Gas from a cyclone separator (5) goes through a spray tower (7) and returns into an air heating unit (4) through a circulating fan (10). Part of dried sludge (e) at the lower part of the cyclone separator (5) enters the inert particles multi-room fluidized bed dryer (3) through the back-mixing in a mixer (2). Waste liquid from the bottom of the spray tower (7) enters a waste liquid circulating pool (8), with part of waste liquid circulating into the spray tower (7) and part into a sewage treatment system.

An energy storage device having both characteristics of super capacitor and lithium ion battery and manufacturing method thereof are provided. The invention adopts the mixture of anode material of lithium ion battery and electrode material of super capacitor or composite material as anode active substance, and uses the mixture of cathode material of the lithium ion battery and electrode material of the super capacitor or composite material as cathode active substance. In the electrode active substance, the electrode material of the lithium ion battery has a content of 20% to 95%; the electrode material of the super capacitor has a content of 5% to 80%. The electrode active substance is mixed with the bonder, conducting agent, additive and solvent etc to prepare slurry, then experience steps of coating, drying, roll forming, parting, so that the anode sheet and cathode sheet of the super capacitance battery are produced. By adopting multi-core winding parallel connection and the assembling technology of the winded wore parallel to the narrow arrangement, the anode sheet, the cathode sheet and the membrane are loaded in the battery shell and then welded, dried, dehydrated, and injected with electrolyte, then activated by electricity to obtain super capacitance battery with high energy density and high power density.

A bone plate and system is provided. The bone fixation plate conforms to the contour of an irregularly shaped bone and eliminates the need for pre-bending or intraoperative bending of the plate. The bone plate is applied to the bone in a generally flat condition and the process of installing and tightening the bone screws in the prescribed order serves to contour the plate to the plate to the underlying bone while providing sufficient strength to effect bone healing. The geometry of the plate allows the plate to follow the contour of an irregularly shaped bone, preventing prominence and patient palpability and streamlining the surgical procedure.

A single-pole relay switch capable of effective arc extinction irrespective of the current flowing directions in which the device is connected in a circuit. The switch has a housing and two sets of contacts located in the housing, each set being composed of a fixed contact and a movable contact. A contact carrier is provided to have first and second movable arms which extend commonly from a bridge and are provided respectively with the two movable contacts. An actuator applies a driving force to move the contact carrier between an ON-position of holding the movable contacts simultaneously in contact respectively with the fixed contacts, and an OFF-position of keeping the movable contacts at respective opening gaps from the fixed contacts. The housing includes a casing which is divided into first and second chambers respectively for receiving the contact sets, each of the first and second chambers being surrounded by a dielectric wall. Permanent magnet are disposed around the casing to stretch the individual arcs in opposing directions to each other and towards the dielectric walls of the first and second chambers, respectively. Thus, the individual arcs can be stretched individually within the separate chambers, i.e., in an isolated condition. Therefore, the individual arcs can be free from merging even when the current flows in such a direction as to drive the arcs in the approaching direction.

An electronic apparatus having a structure for protecting a flexible printed circuit (FPC) and a chip thereon is described, including a metal backplate, a first circuit and a second circuit respectively on the front side and the back side of the backplate, a metal frame plate at the periphery of the backplate, at least one FPC with at least one chip thereon, a metal screen plate, and at least one insulating elastic ring disposed around the FPC. The FPC has a first end connected to the first circuit and a second end connected to the second circuit over the frame plate, and the screen plate is disposed on the frame plate screening the FPC and the chip. The inner periphery of the insulating elastic ring closely contacts with the chip, and the outer periphery of the ring closely contacts with the frame plate and the screen plate.

A bone plate and system is provided. The bone fixation plate conforms to the contour of an irregularly shaped bone and eliminates the need for pre-bending or intraoperative bending of the plate. The bone plate is applied to the bone in a generally flat condition and the process of installing and tightening the bone screws in the prescribed order serves to contour the plate to the underlying bone while providing sufficient strength to effect bone healing. The geometry of the plate allows the plate to follow the contour of an irregularly shaped bone, preventing prominence and patient palpability and streamlining the surgical procedure.

A custom mouthguard has a resilient U-shaped body with an anterior wall and a posterior wall. A post dam on the posterior wall forms a seal with palatal tissue to increase retention of the mouthguard in a wearer's mouth. The increased retention allows a wearer to speak and open mouth breath while wearing the mouthguarrd. The mouth guard also has an indexed region that serves to mutually stabilize maxillary teeth, mandibular teeth, mandible and TMJ components. Mouthguard methods and processes are also disclosed.

This invention discloses a thermoset crylic acid latex and its preparation method and a corrosion resistant bottom coat containing such latex and used in the Al fins of the heat converter of air conditioners, in which, said latex includes a crylic acid kind monomers, an ionic vinyl monomers, an ethene monomers, a vinyl silane coupler, a crosslink monomers, a surface active agent and an initiator to be got by seed latex and semi-continuous drop technology. Said bottom coat includes said thermoset crylic acid latex, water-base coating resin, water-base cross-linker, booster solvent, neutralization agent, a water-base adhesive force accelerant, a catalyst and water.

A ventilation member (100) of the invention includes a tubular part (11), a gas permeable filter (19), and a cover part (31). In an attached state where the tubular part (11) is fit into the cover part (31), gaps functioning as gas passages (AR₂ and AR₃) are formed between a bottom portion (35) of the cover part (31) and the gas permeable filter (19) and between a side wall portion (39) of the cover part (31) and a body portion (17) of the tubular part (11). The opening area (S2) of a filter-end opening (15) with respect to an in-plane direction (WL) perpendicular to the thickness direction of the gas permeable filter (19) is larger than the opening area (S1) of a connection-end opening (13) with respect to the in-plane direction (WL).

The invention provides a preparation method of a nickel-cobalt layered bimetallic hydroxide/graphene electrocatalyst, which belongs to the technical field of electrocatalysts. The method disclosed bythe invention comprises the following steps: graphene and cobalt nitrate are uniformly dispersed in a methanol solvent by ultrasonic waves, so that an ultrasonic solution is obtained; the ultrasonic solution is added into a methanol solution of dimethylimidazole, is uniformly mixed and then is enabled to stand, and centrifuging, washing and drying are then carried out, so that a ZIF-67/graphene composite material is obtained; the ZIF-67/graphene composite material and nickel salt are mixed and dissolved in a solvent, refluxing is carried out for reaction, centrifugal separation is then carriedout, obtained precipitate is washed with absolute ethyl alcohol, and drying is carried out to obtain a NiCo LDH/G composite material with a nanoscale morphology. The method disclosed by the inventionovercomes the defects of high requirement on equipment, need for high temperature and high pressure and need for an expensive surfactant existing in conventional synthesis methods, and compared withthe prior art, the preparation method has the advantages of simple process, low cost, easy reaction process control and the like, and is suitable for industrial mass production.

The invention relates to a plane orientating system with large stroke, high speed nanometer stage precision and macro/micro dual driven. The X-shaft flexible hinge is fixed between the X-shaft micro moving platform 19 and X-shaft macro moving platform 16; the X-shaft piezo-electric ceramic 18 is posited inside the X-shaft micro moving platform 19; the cushioning hinge 29 is fixed between the inner guide 28 and the outer guide 30; one end of Y-shaft piezo-electric ceramic 24 is connected with Y-shaft micro moving platform 23; two bearings 34 are separately rotating connected with inner guide 18 and outer guide 30 of the Y-shaft macro/micro moving platform 8. The working rage is 25mmX25mm; the resolution is 10nm; the repetition orientating precision is 20nm; the maxim speeds of X-shaft and Y-shaft are separately at 50m/s2 and 100m/s2.

The invention discloses a calibration device of a laser alignment device and a method for measuring indication errors of the laser alignment device through the calibration device. The calibration device comprises two mutually independent rotation shafts capable of rotating for 360 degrees. One of the rotation shafts is used as a reference shaft and the other rotation shaft is capable of moving, pitching and deflecting in the horizontal direction and vertical direction. By setting the rotation angles of the rotation shafts, and adjusting the horizontal and vertical displacement quantity, pitching quantity and deflection quantity of the other rotation shaft, measurement of the displacement quantity in the horizontal and vertical directions, the rotation angle quantity of an inclinometer and indication errors of alignment deviation of a position sensitive sensor of the laser alignment device can be achieved. According to the invention, operation states of the laser alignment device in actual working processes can be precisely simulated; the standard alignment deviation quantity of measurement shafts can be displayed in a real-time and direct manner; calibration results are quite precise; and operability of the measurement process is quite high.

The double-wire powering trolleybus bow collector used in city public traffic includes bottom frame, lower arm rod, pull rod, bow raising spring, upper arm rod, balance rod, head seat cross rod, cylinder, top cross rod, electrically conducting top sliding board, insulating seat, insulating rod and top spring. The six parts including bottom frame, lower arm rod, pull rod, upper arm rod, balance rod and head seat cross rod constitute two duplex planar quadric crank mechanisms with rods connected flexibly. The electrically conducting top sliding board is separated by the middle insulating rod into two current collectors fixed via the insulating seat on the top cross rod; and the top cross rod is connected flexibly to the head seat cross rod, with two ends being connected via the top spring. When the low arm rod is oscillated by the cylinder on the bottom frame and the bow raising spring, the electrically conducting top sliding board will ascend or descent. The present invention has good contact performance, etc.