381results about How to "Reduce span" patented technology

A method and system for maintaining uniformity in a FLIR display. During a one-time initialization procedure, a plurality of dynamic ranges are defined by covering a specific range of bucket fill levels when in a certain gain. To cover all dynamic ranges possible, a plurality of pairs of responsivity equalization (RE) calibrations (each pair producing a RE set of pixel gain corrections) are also accomplished in the same one time initialization period. A plurality of corresponding level equalization (LE) calibrations (each using the appropriate calibrated RE set and producing a LE set of pixel level corrections) for each anticipated dynamic range are made at every power-up initialization. Each of the calibrations is done with respect to a thermal reference source to produce a uniform scene at the desired bucket fill level. An algorithm is employed which forces the two bucket fill points defined during the responsivity calibration to span as far as possible the dynamic range and forces the level equalization bucket fill point to fall within the two bucket fill points of the responsivity calibration. Then, during an operational time period, the scene and optics temperatures are monitored, and if the average bucket fill value exceeds the bucket fill range of the present dynamic range, the presently selected dynamic range is changed to a second dynamic range (gain is changed along with the RE set and LE set). The dynamic ranges are designed to overlap so that a hysteresis effect is achieved. The pre-calibrations and automatic dynamic range switching prevent saturation and create the best uniformity (lowest fix pattern noise) possible while allowing for continuous operation of the FLIR system, thus eliminating the interruption caused by the prior art touch-up calibration procedure.

A closing link for a bicycle chain that includes a first outer link plate having a first elongated hole and a first chain pin extending therefrom and a second outer link plate having a second elongated hole and a second chain pin extending therefrom. The first chain pin is received in the second elongated hole and the second chain pin is received in the first elongated hole Each chain pin has a head at one end, a foot at the other end and a groove therebetween. Each elongated hole has a larger diameter end, a smaller diameter end and a displacement region therebetween. The larger diameter end has a diameter larger than a diameter of the pin head. The smaller diameter end receives the groove of the chain pin and includes a countersink to receive the pin head. The displacement region includes sides having recessed and unrecessed portions. The recessed portions have a smaller depth than a depth of the countersink at least in the region of the countersink.

A razor cartridge has a housing having a front and a rear. At least two adjacent blades are provided, each pair having a leading blade and a trailing blade. Each of the leading and trailing blades having a cutting edge directed towards a front of the housing, the cutting edge of the leading blade being positioned between the cutting edge of the trailing blade and the front of the housing. A span δ_s of less than 1.0 mm is provided between the cutting edges of at least one adjacent pair of trailing and leading blades and an inter-blade gap δ_g is provided between said pair of adjacent leading and trailing blades, measured at the shortest distance between the adjacent leading and trailing blades, wherein the gap δ_g is less than or equal to the span and greater than 0.15 mm.

A structure for attaching a fluorescent tube includes a base, a holder supported by the base, and a pair of contacts. The holder holds an intermediate portion of the fluorescent tube while restraining the fluorescent tube from moving in a radial direction. To the pair of contacts, terminals of a pair of end portions of the fluorescent tube are respectively attachable in an attaching direction corresponding to the radial direction of the fluorescent tube. Each contact includes a pair of elastic pieces facing each other. The pair of elastic pieces have a pair of straight portions extending substantially straight along the attaching direction and facing each other. On the pair of straight portions, a pair of contact portions for clamping the corresponding terminal of the fluorescent tube therebetween are formed.

A method of rotatably couple a wing tip device (4) to a fixed wing (3) by a rotational joint (101) having an outer race (8) and an inner race (9) that is received in the outer race (8) one of the inner and outer races comprises a male member (76) and the other is a two-part assembly comprising a first part (9a) and a second part (9b) that together form a female member (72), the method brings the first and second parts together to form the female member (72) about the male member (76) such that the male member (76) is received in the female member (72) and fixing the first and second parts (9a, 9b) such that the race that is rotationally fixed relative to the wing tip device (4) is axially and radially retained relative to the race that is rotationally fixed relative to the fixed wing (3).

The present invention relates to a method for integrating the survey and design of power transmission lines with internal and external work using all-digital photogrammetry technology. The present invention is improved on the basis of the prior art. Plane section data, after field measurement and adjustment, use the data batch processing software interface to input the plane section data into the Daoheng software platform. The invention has the beneficial effects of low cost, high work efficiency, reduced labor intensity, less personnel investment, reliable quality, easy popularization and application, and remarkable economic and social benefits.

The invention relates to a novel reinforced concrete prefabricated integrally-cast building structure system, which comprises a floor slab, superposed beams and columns and/or shearing walls. Each superposed beam comprises a primary beam and a secondary beam and consists of a prestressed prefabricated beam and a cast-in-situ part. The prestressed prefabricated beam comprises a beam body and prestressed steel stranded wires. Section steel is arranged at the end parts of the beam body. One part of the section steel is buried in the beam body and the other part of the section steel is exposed at the end part of the beam body. The prefabricated beam in the primary beam is connected with the columns and/or the shearing walls through the section steel. The prefabricated beam in the secondary beam is placed on the primary beam through the section steels. A plurality of template supporting holes are longitudinally arranged on the beam body of the prefabricated beam of the secondary beam and the beam body of the prefabricated beam of the primary beam in parallel with the secondary beam. By adopting the prefabricated beams to be integrally cast with the cast-in-situ beams and the cast-in-situ floor slab to form a structure system, the prefabricated beams are fabricated by adopting a pre-tensioning prestressed technique and can be produced on a large scale in plants at one time and the production cost is reduced.

The invention relates to a goaf-side entry retaining arrangement process of mining of coal mines in a pit, in particular to a coal-pillar-free semi-normal-position goaf-side entry retaining method. The coal-pillar-free semi-normal-position goaf-side entry retaining method is characterized in that a semi-normal-position construction filling wall body is used on a entry retaining working face, one side of the edge of an isolation wall body is located at the position in a lateral wall portion of a recovery side of a roadway before mining for an A distance, and the other side of the edge of an isolation wall body is located in a goaf area. The coal-pillar-free semi-normal-position goaf-side entry retaining method enables one side of the filling wall body to be arranged in an original roadway, is easy in top connection, appropriately reduces entry retaining spans, is apt to reduce strata behavior degree, and is favorable for maintenance of entry retaining section size and integrity of a top plate.

The invention discloses a combined-type cable dome structure for an elliptic plane with an unequal-height boundary. The combined-type cable dome structure comprises an outer-ring beam arranged on unequal-height capitals of a lower structure. The outer-ring beam adopts a space-curve form which changes along with the elevation of capitals of the lower structure. The horizontal projection of the outer-ring beam is ellipse. An inner-ring beam is arranged above the middle portion of the outer-ring beam. Inhaul cables and ridge cables are arranged on the outermost ring of the outer-ring beam and the inner-ring beam through a levy-type structure, and inhaul cables and ridge cables are arranged within the outermost ring through a Geiger-type structure. A connecting beam for a balancing cable is arranged on the inner-ring beam additionally, and the balancing cable is arranged between the inner-ring beam and the outer-ring beam additionally. The combined-type cable dome structure can be applied to a structural engineering of which unequal-height horizontal projection of the boundary is an ellipse plane, the structure is forced uniformly, and the stability is strong; node structure is simple, the manufacturing cost is low, and construction is convenient; laying requirements of rigid roofing material can be met.

The invention discloses a dedusting-denitrating integrated device which comprises a flue gas channel, a mixed flue gas inlet and a shell consisting of an outer cylinder and an inner cylinder, and a ash hopper at the bottom of the shell, wherein the inner cylinder is mainly used for dedusting and ammonia mixing, the outer cylinder is mainly used for containing a denitrating catalyst bed, the crosssection of the flue gas channel is ring-shaped, and ammonia spray grilles are distributed in the flue gas channel in a radial manner so that the required NH3-to-NO ratio can be reached more easily. The device provided by the invention can be used for dedusting before carrying out denitrating, a catalyst can be effectively prevented from being worn, poisoned and blocked and the service life of thecatalyst can be prolonged. Under the condition that the length of the device is not increased, the ammonia mixing time is prolonged and ammonia mixing can be performed fully; heat absorbing spiral plates and cooling rectifier plates are arranged in both the inner cylinder and the outer cylinder to share heat of flue gas at the inlet, and therefore the heat loss of flue gas can be reduced, the denitrating efficiency can be improved and the catalyst is prevented from being sintered and inactivated under the action of superheated flue gas.

A spindle bracket for rear suspensions includes a bracket body welded to a trailing arm and having a mounting hole into which a spindle is inserted, and a lateral strength reinforcing piece secured between the trailing arm and the bracket body.

The invention relates to a pretension and lay-off method of a crane jib for a ship, belonging to the technical field of a crane. The crane comprises a luffing mechanism composed of a top pulley block, a jib, a winch, a luffing wire rope and a jib head pulley block and a bracket. The method comprises the following steps: A. operating the winch in the forward direction, loosening the jib and layingoff the jib onto the bracket; and B, operating the winch in the reverse direction, pulling the jib upwards to enable the pressure of the jib on the bracket to be less than the pressure on the bracketbefore being subjected to the upward pull, and stopping and shutting off the winch. The invention also relates to a pretension and lay-off device of a crane jib for a ship. The luffing mechanism alsocomprises a middle pulley arranged at the middle of the jib, and the luffing wire rope is connected with the jib head pulley block and the middle pulley through the top pulley block. The pretension and lay-off method and device of a crane jib for a ship can produce a pretension force on the jib by means of the luffing wire rope, thereby reducing the self-weight load of the jib as well as the influence and the destruction on the jib structure as a result of the shock load and the changing load of the bracket on the jib. Besides, the invention has the advantages of simple method and structure, convenient operation and low cost.

The invention relates to a banded transportation junction formed by paralleling parallel elevated road stations and elevated railway stations, belonging to the technical field of railway station construction and aiming at solving the problem of inconvenience brought about for people by the conditions that the stations of various transport means of a large-scale integrated transportation junction are excessively concentrated, a scale is excessively huge, and transport is separated from commerce. The parallel elevated road stations are arranged parallel to one or more than one elevated railway station at short distances to form the banded transport hub; stop stations of island platforms of the parallel elevated road stations correspond to entrances/exits of the elevated railway stations, and passengers can take buses which are convenient for positive-direction and reverse-direction transfer on parallel elevated roads to reach and leave the entrances/exits of elevated railway stations on which the passengers need to take; and when the parallel elevated road stations are parallel to the elevated railway stations in an overlapping way, the parallel elevated road stations are positioned below the elevated railway stations.

Methods and systems are presented to analyze a retinal image of an eye and assigns features to known anatomical structures such as retinal layers. One example method includes receiving interferometric image data of an eye. A set of features is identified in the image data. A first subset of identified features is associated with known retinal structures using prior knowledge. A first set of characteristic metrics is determined of the first subset of features. A second set of characteristic metrics is determined of a second subset of features. Using the characteristic metrics of the first and the second sets, the second subset of features is associated with the retinal structures. Another example method includes dividing interferometric image data into patches. The image data in each patch is segmented to identify one or more layer boundaries. The segmentation results from each patch are stitched together into a single segmentation dataset.

An aircraft wing comprises a fixed wing, and a wing tip device at the tip thereof The wing tip device is configurable between (i) a flight configuration for use during flight, and (ii) a ground configuration for use during ground based operations. In the ground configuration with span of the wing is reduced. The wing further comprises a locking mechanism including a locking pin with a longitudinal axis, the locking pin associated with one of the fixed wing and the wing tip device, and a bush associated with the other of the fixed wing and wing tip device, the bush configured to receive the locking pin. The bush is located within a bush housing arranged to allow relative movement of the bush in the direction of the longitudinal axis of the locking pin when the locking pin is received within the bush.

An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.

An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.

The invention discloses a steel-concrete composite tunnel lining supporting structure and a manufacturing and construction method thereof. The supporting structure is formed by splicing unit plate pieces with radian in the circumferential direction and axial direction of a tunnel wall. Each unit plate piece is provided with a pair of arc edges and a pair of straight edges. The inner wall of each unit plate piece is provided with protruding ribs at intervals in the straight edge direction. The radian of the protruding ribs is consistent with that of the arc edges, and cavity pillars are formed between the protruding ribs and the unit plate pieces. The surfaces of the protruding ribs are provided with concrete pouring holes, and unit plate pieces corresponding to the protruding ribs are provided with concrete overflowing holes. Meanwhile, the arc edges are inwards bent to form end face flanges, and the straight edges are provided with side edge flanges. The steel-concrete composite tunnel lining supporting structure has the advantages that the supporting structure can bear pressure load of the upper portion of a tunnel and the surrounding rock immediately, and the newly dug tunnel can be supported rapidly and timely and is prevented from collapsing; the supporting structure can be used for the primary lining as well as integrating the primary lining and the secondary lining and an also be used for repairing, reinforcing and the like of crippled tunnels.