30 results about "Distances Between Ports" patented technology

A small gauge mechanical tissue cutter/aspirator probe useful for removing the trabecular meshwork of a human eye has a generally cylindrical outer cannula, an inner cannula that reciprocates in the outer cannula, a port located near or at the distal end of the outer cannula on a side or tip of the outer cannula, and a guide with a distal surface located on the distal end of the outer cannula. A distance between the distal surface of the guide and the port is approximately equal to the distance between the back wall of Schlemm's canal and the trabecular meshwork.

A washer box has a hollow housing with top and bottom walls and a front wall defining a window providing access to the housing interior. A pair of laterally spaced ports in the bottom wall are aligned in a first reference plane parallel to and spaced rearwardly from the front wall, and are configured and arranged to accommodate the connection of hot and cold water supply lines to valves located within the housing. A pair coaxially aligned alternatively useable drain openings in the top and bottom walls are located rearwardly of the first reference plane in a second reference plane extending perpendicular to the first reference plane and bisecting the distance between the laterally spaced ports.

A small gauge mechanical tissue cutter/aspirator probe useful for removing the trabecular meshwork of a human eye has a generally cylindrical outer cannula, an inner cannula that reciprocates in the outer cannula, a port located near or at the distal end of the outer cannula on a side or tip of the outer cannula, and a guide with a distal surface located on the distal end of the outer cannula. A distance between the distal surface of the guide and the port is approximately equal to the distance between the back wall of Schlemm's canal and the trabecular meshwork.

Method and system for managing cabling rooms that include a plurality of communication panels, which are arranged closely to one another. Each cabling room has a plurality of patch panels, structurally connected to form vertical structures. An operator is automatically guided to a communication panel or a plurality of communication panels, in which changes are to be made to modify the connectivity status or to deal with connectivity problems that may arise for any reason. The system automatically indicates to an operator optimal ports that are available and optimal patch cords for connecting them, based on distances between ports and on the electrical characteristics of the electrical signals that it is intended to pass between the ports.

The invention discloses a method for quickly positioning an optical fiber breakpoint, and the method specifically comprises the following steps: 1), measuring the distance between the optical fiber breakpoint and a port through employing an optical time domain reflectometer, and enabling the distance value to serve as a reference value; 2), controlling a second pulse generator to generate an electric pulse signal by a server; 3), capturing voltage change by utilizing electromagnetic induction equipment, and calculating the length from the point to the end point of the optical fiber by utilizing the time difference of electric signal transmission; 4), using the GPS to time by the server; 5), eliminating the deviation between the server and the GPS receiving device of the pulse induction measuring device; and 6), when the distance value measured by the electromagnetic induction equipment is the same as the distance value measured by the optical time domain reflectometer, determining thepoint as the optical cable breakpoint. The method has the advantage that the position of the breakpoint can be quickly found. The method is reasonable and effective, can effectively improve the optical fiber breakpoint positioning efficiency, shortens the troubleshooting time, improves the maintenance efficiency, and is high in application value.

The present invention relates to a wireless access system, and more particularly, to a method and apparatus for optimizing a limited feedback in a distributed antenna systems (DSAs). In one aspect of the present invention, a method for optimizing a limited feedback in a wireless access system supporting a distributed antenna (DA) technique, the method comprises steps of receiving, a user equipment (UE) from a DA port, information related to a transmission power of the DA port; receiving a downlink signal from the DA port; measuring a distance between the UE and the DA port by using the downlink signal from the DA port; calculating a number of feedback bits based on the information of the transmission power and the distance between the UE and the DA port; and transmitting feedback information using the calculated number of feedback bits.

The invention discloses a pipe connecting device, comprising a main frame, wherein rollers are arranged at the bottom of the main frame, two parallel pipeline fine-tuning devices are arranged on the main frame in a slidable manner, each pipeline fine-tuning device is provided with a first port and a second port which are communicated, the distance between each first port and the corresponding second port is adjustable, each first port is connected with a first hose, each second port is connected with a second hose, and a hydraulic gate valve is arranged on each second port. By adopting the pipe connecting device, pipelines can be connected conveniently, the pipe connecting time can be reduced, the labor intensity of workers is reduced, and the working efficiency is increased.

The invention discloses a butt-jointing method for a truss girder, which comprises the following steps of: a, guiding a to-be-erected girder to move along the direction of an erected girder till move to a preset position by a guiding girder; b, removing the guiding girder section by section and moving the to-be-erected girder along the direction of the erected girder; c, stopping moving when a distance between ports of the two girders reaches a preset distance, measuring a deviation between the position of the to-be-erected girder and a design position, roughly adjusting the position of the to-be-erected girder, and calculating and confirming the distance between the two girders; d, moving the to-be-erected girder according to the calculated and confirmed distance, and finely adjusting the positions of an upper chord pipe and a lower chord pipe of the to-be-erected girder, thereby aligning the two girders; and e, welding a plurality of fixing plates on a contact surface of the two girders, wherein the two ends of the fixing plates are respectively in fixed connection with the two girders. According to the butt-jointing method for the truss girder provided by the invention, the girders can be butt-jointed in air, the manufacturing of the girder and the butt-jointing operation application are more convenient and flexible, and the safety coefficient of the butt-jointing operation is also increased.

A firearm has a frame with an interchangeable barrel that is mounted to the frame through a tool-less knockdown pin. The barrel has ports in a smooth-bore section and no ports in a rifled-bore section, and the ports are progressively spaced, with the ports closest to the rifled-bore section having a greater distance between the ports than the ports closest to the muzzle. Preferably, the firearm is a multi-chamber design such as a revolver with a firing cylinder or a multi-barrel breech-loader that holds multiple rounds of ammunition together with a storage-firing clip while stored in an ammunition compartment and also when loaded into the firing chambers and discharged by the firearm. The frame preferably has a trigger mechanism with a sear assembly that includes a block assembly with a wedge block that translates on a guide rod and a disconnect block that is supported by a disconnect rest.

The invention provides a miniaturized broadband dual-polarized antenna feed network, which is formed by an upper-layer three-port network (1) and a lower-layer three-port network (2). The upper-layer three-port network (1) and the lower-layer three-port network (2) are exactly same in structure; and the lower-layer three-port network (2) is arranged in a manner of rotating around a vertical axis for 90 degrees with respect to the upper-layer three-port network (1). According to the feed network, the two ends of a ladder ring for impedance matching are flattened to enable the length of a slot line to be smaller than the distance between ports, at the two ends of a diagonal line, of a dual-polarized antenna, and reduction of the length of the slot line provides space for up-down stack-up arrangement of the two three-port networks, so that the dual-polarized antenna feed network is allowed to be more compact in structure, is fitter to the size of the dual-polarized antenna.

A radiator unit for omnidirectional antenna is composed of a basic conductor tube and one or more external conductor tubes sleeving on said basic conductor tube. Its radiation terminal is the space between the end of said external tube(s) and the external surface of basic tube. The distance between two radiation terminal is 1/2 wavelength of central frequency. Its advantages are wider bandwidth and higher gain.

The invention discloses a 1*16 optical splitter with a special Y-branched type bending structure. The overall length Z of the 1*16 optical splitter is equal to 35,000mum, the spacing Xtheta of every two adjacent output waveguides is equal to 127mum, and both input waveguides and the output waveguides have a rectangular cross section of 6mum*6mum. A traditional 1*16 optical splitter has the problemthat the distance between an input port and an output port is long, so that the overall length of the optical splitter is long, and the requirement for the high integration of existing optoelectronicdevices is difficult to achieve. The 1*16 optical splitter with the special Y-branched type bending structure provided by the invention solves the problem existing in a traditional 1*16 optical splitter; and the 1*16 optical splitter is small in size and low in loss, and meets the requirements for the high integration of the optoelectronic devices.

The invention relates to the technology in the communication field, in particular to a signal wire length determining method and device, a printed circuit board and an electronic device. The signal wire length determining method includes the following steps that the signal wave length of a transmitted signal in a signal wire is obtained; according to the signal wave length, alternative lengths of the signal wire are determined; each alternative length is an integral multiple of one fourth of the signal wave length; according to the distance between board card ports, wherein the signal wire is predetermined to connect the board card ports, the final length of the signal wire is determined among the alternative lengths; a signal wire with the final length is formed in a connection plate and the signal wire is used for connecting the board card ports. According to the signal wire length determining method and device, the printed circuit board and the electronic device, the length of the signal wire is arranged to be the integral multiple of one fourth of the signal wave length to reduce losses during signal transmission and provide signal quality. In addition, multiple signal lengths are provided at the same time so that a user can determine the most proper signal length according to actual needs.

The invention relates to a quantitative interrupted dust adding device. The quantitative interrupted dust adding device comprises a taper hopper, a box, a double-head piston cylinder and a dust blowing pipe; a feed hole in the upper end of the dust blowing pipe is connected with the bottom of the box; the upper end of the double-head piston cylinder is arranged inside the box; the lower end of the double-head piston cylinder penetrates the bottom of the box to be arranged inside the feed hole of the blowing pipe; a discharge hole of the tapper hopper is connected with the upper end opening of the double-head piston cylinder; the double-head piston cylinder comprises a cylinder body, an upper piston head, a lower piston head and a screw rod; the upper end opening of the cylinder body is connected with the discharge hole of the tapper hopper; the lower end opening of the cylinder body penetrates the bottom of the box body to be arranged inside the feed hole of the dust blowing pipe; distance between the upper piston head and the lower piston head is not larger than that between the upper end opening and the lower end opening of the cylinder body. The quantitative interrupted dust adding device has the advantages of being small in average dust adding speed, high in accuracy, simple in structure and high in stability.

An inkjet head includes a recording element substrate, on which sets of energy generating elements generating energy to discharge ink and a supply port supplying ink to discharge ports are arranged, and an orifice plate including the discharge ports. The sets include a set having a first supply port disposed at a first edge of the substrate and a set having a second supply port disposed at a second edge of the substrate opposite the first edge. The distance between the second edge and the second supply port is shorter than the distance between the first edge and the first supply port. A contact area between the substrate and second channel walls that form second ink channels communicating with the second supply port is larger than the contact area between the substrate and first channel walls that form first ink channels communicating with the first supply port.