31 results about "Edge loading" patented technology

A roller for supporting an endless track of a track laying tractor is mounted for rotation about a shaft or axle fixed between transversely spaced, parallel rails of a track support frame. The roller is constructed of mirror image halves having axially inner ends welded together, with a pair of thrust bushings being received on the shaft and respectively disposed in supporting relationship the roller halves. Each thrust bushing includes an axially outer end defined by an annular flange having an axially outwardly facing flat bearing surface. A pair of mounting brackets are respectively received on, and fixed to opposite ends of the shaft and fixed to the pair of rails of the support frame. Non-uniform edge loading of the bushings due to minor shaft deformations due to flexure of the track support frame rails is minimized by providing axially inwardly facing ends of the brackets with spherically contoured surfaces, and by locating an annular spacer between each bracket and bushing flat bearing surface, the annular spacer having outer and inner axially facing surfaces respectively shaped complimentary to the spherical contoured surface of the bracket and the flat bearing surface of the bushing

Joint assemblies are useful for connecting one structure to another structure. When the various structures deflect or bend, edge loading occurs therebetween. The subject joint assembly includes a pin positioned between a first and second structure. An insert is free floating positioned around the pin for contacting either of the first or second structures. A crown shaped surface is utilized on the insert at a substantially central location therealong. The crown shaped surface directs forces to the center of the insert to reduce edge loading.

A bearing material composition that lines a support includes a combination of a thermoplastic conforming material and abrasive particles which provide a combined effect for remedying the effects due to edge loading that may be caused by misalignment between the bearing and a shaft to which a portion is rotatably mounted. The conforming material may be PTFE such that it does not have a memory and is subject to cold flow and creep. As a result, misalignment problems and edge loading are remedied by the combination of abrasive removal of metal material from the drive shaft at the location of edge loading and creep of the conforming material at the location of edge loading which may provide an overall greater bearing interface surface.

The conical monopole antenna includes a conical antenna element having an apex and a base, a conductive base member coupled across the base of the conical antenna element and a ground plane antenna element, e.g. a disc antenna element, adjacent the apex of the conical antenna element. A fold conductor is coupled between the conductive base member and the ground plane antenna element. The fold conductor may include at least one impedance element, such as a resistive element or inductive element. An antenna feed structure is coupled to the ground plane and conical antenna elements. The antenna may have reduced gain above a cutoff frequency being traded for low VSWR below the cutoff frequency to get increased usable bandwidth. The folded resistive termination is preferential to driving point attenuation and edge loading, and the conical monopole antenna provides low VSWR at most radio frequencies.

The invention relates to a producing process for corrugated board, especially a producing process for high-loading corrugated board. A producing process that low-weight corrugated stock paper is used to produce high-loading corrugated board is provided. The process comprises feeding at least a corrugated stock paper, feeding an internal stock, corresponding to number of corrugated stock paper, feeding at least a corrugated stock paper strip with the same width of box height, adjusting and determining the position of corrugated stock paper strip to corrugated stock paper, spraying glue for each corrugated stock paper strip, preparing two-surface paper by sticking and pressing of corrugated stock paper and corrugated stock paper strip and sticking internal surface, coating glue for two-surface paper in second time, preparing paper board by sticking surface, drying, cutting in vertical direction, cutting in horizontal direction and finishing product. Because several layer of corrugated paper is added at the height position of paper box the problem that the cost of package box is against various loading quality indexes of paper box is solved. Stock is saved and cost is decreased. Various physical indexes such as loading, ring loading and edge loading so on is improved and the demand for product packaging is satisfied at a larger extent.

The invention relates to a mattress durability combined testing machine which comprises a roller component, a frame component, an edge loading component, a center loading component and an air cylinder component. The roller component is arranged on an examine platform in the middle of the frame component, the air cylinder component is mounted inside the frame component on a side portion, the roller component is connected to the air cylinder component through a push plate on the air cylinder component, and the edge loading component and the center loading component are mounted on the frame component. The mattress durability combined testing machine is designed according a new testing standard, a clamp can be adjusted according to the size of a mattress to be tested, an integrated combined-type mattress testing machine rather than a separating-type mattress testing machine is adopted, the combined tests of durability of mattresses of different sizes can be achieved conveniently and effectively, multiple mattress tests can be completed easily and conveniently, and the reliability and stability of the tests are guaranteed.

The invention discloses a piston ring. In order to provide a piston ring that has excellent scuffing resistance and abrasion resistance, even when used in harsh environments wherein pressure and thermal load are increased, and in order to provide a piston ring that can also avoid edge loading, a first curved surface of an outer peripheral sliding surface according to the present invention protrudes to the outside in a cross-section that passes through the central axis of a piston ring and that is parallel to said central axis, and the radius of curvature of said first curved surface continuously increases or decreases from a crank chamber side to a combustion chamber side.

A track-type work machine is provided, including a roller frame and a track extending about the roller frame. A track roller is mounted along the roller frame and rotatable against the track. The track roller is rotatably supported by a bearing that includes a shaft extending in the track roller and at least one sleeve rotatable about the shaft. At least one of the sleeve and the track roller include a load transmitting crown. A method is further provided of reducing edge loading of a track roller bearing, by transmitting selected loads on the bearing toward a center thereof at least in part by crowning a rotatable sleeve of the bearing.

The present invention provides a low-profile double-frequency ultra-wideband antenna, which comprises at least one double-frequency ultra-wideband vibrator unit. The double-frequency ultra-wideband vibrator unit comprises a pair of ultra-wideband vibrators printed on a dielectric substrate and arranged in an orthogonal manner. The two arms of each ultra-wideband vibrator are of a fat-block shape, and the two arms of each ultra-wideband vibrator are provided with arc grooves at the ends along the edges at two sides. The end of each ultra-wideband vibrator is loaded with a section of arc branch knot along the outer edges of the vibrator arms. The centrally intersecting part is provided with a feeding point connected coaxial cable or a balancing device. According to the invention, through the adoption of a thick highly-dielectric-constant dielectric substrate and the use of the manner of opening grooves on the vibrator surface and the loading of open circuit branch knot at the end, it is possible to provide for a micro base station of mobile communications a low-profile double-frequency ultra-wideband antenna featuring a low profile, a small size, the realization of MIMO, high separation and a high gain. The method is also innovative in idea, clear in principle, suitable for use and easy for implementation. With a low cost, the antenna can be produced in batches, and it can best replace a traditional Small Cell antenna. In addition, for the design and improvement in a traditional wideband intersecting vibrator antenna, the invention can also apply effectively.

The invention discloses a sulfur-doped graphene catalytic material and a preparation method thereof. The material is prepared by a hydrothermal synthesis method from the following raw materials in percentage by mass: graphite powder 0.20-0.85wt%, sodium nitrate 0.30-0.60 wt%, potassium permanganate 1.50-2.60 wt%, concentrated sulfuric acid 14.00-18.50 wt%, persulfate 0.01-0.07 wt%, hydrogen peroxide 24.00-30.00 wt %, and the balance of water, wherein sulfur atoms are loaded in a single form of edge loading into a graphene structure composed of six-membered carbon rings. The material of the invention can meet multi-directional requirements of materials in terms of economic cost and mechanism research, and has broad prospects both in scientific research and in catalytic industry applications.

The invention relates to a support bearing, for example for straighteners, having an outer ring (2, 24, 41), having an inner ring (7, 23, 31, 40) and rolling bodies (1) which can roll between the outer ring (2, 24, 41) and the inner ring (7, 23, 31, 40) on raceways, wherein a bending moment prevails between the rings (2, 24, 41, 7, 23, 31, 40) as a result of a load with a fixed direction of action. With the aim of compensating for the bending moment, it is proposed to provide an outer raceway of the inner ring (7, 23, 31) and/or an inner raceway of the outer ring with a profiling with a variable diameter in the axial width, wherein the profiling is adapted or approximated to a non-cylindrical bending line caused by the bending moment in the rolling contact, and the bending line is defined by a line, on which bending forces which are transmitted from the inner ring (7, 23, 3) to the rolling bodies (1) and are caused by the bending moment lie substantially perpendicularly. As a result, in particular, the disadvantageous edge loading in a given load direction is suppressed, with the result that more rolling bodies (1) can transmit load between the rings (2, 24, 41, 7, 23, 31, 40) at the same time.

The invention relates to a high-pressure pump (1), which is used in particular as a radial or in-line piston pump for fuel injection systems of air-compressing, auto-igniting internal combustion engines, comprising a pump assembly (5) and a drive shaft (6), which comprises a cam (7) associated with the pump assembly (15). The pump assembly (15) has a roller shoe (30) and a roller (31) mounted in the roller shoe (30). The roller (31) rolls on a running face (34) of the cam (7). To this end, the cam (7) has eased areas (40, 41) on the running face (34) thereof. The eased areas (40, 41) ensure advantageous guidance of the roller (31) on the running face (34). The eased areas (40, 41) are needed in order to avoid edge loading. The fact that the eased areas are located on the camshaft and not on the roller (31) means that the hydrodynamics between the roller (31) and the roller shoe (30) can be perfected.

Disclosed is a vehicle wheel bearing device that prevents edge loading of the osculating ellipse of a ball, and that increases service life and acoustic characteristics. In the vehicle wheel bearing device, which is configured from a double-row angular ball bearing, the shoulder height of shoulders (18) of an outer member (12) is set in the range of 0.35-0.50 times the ball diameter in the double-row of balls (14); the corners (19) of the shoulders (18) are each configured from a flank (19a) that is a straight line that is tangential to an outer rolling surface (12a), and a chamfered section (19b) that is rounded in an arc having a predetermined curvature radius (r); by means of a formed grindstone that shapes the double-row of outer rolling surfaces (12a), the corners (19) are formed at that same time, and are formed smoothly and continuously from each outer rolling surface (12a); and the length (h) in the radial direction of the flank (19a) is set to be at least 0.2 mm.

The invention discloses an automatic line-edge loading rack. The automatic line-edge loading rack comprises a rolling goods shelf, a shifting rod, a blocking mechanism and a foot switch, wherein the rolling goods shelf is a three-layer inclined rolling goods shelf, the blocking mechanism is installed on the rolling goods shelf and electrically connected with the foot switch, and a fixing plate is fixedly installed at the lower end of the foot switch; an installation plate is fixedly installed on the ground at the front side of the rolling goods shelf, the shifting rod is installed at the lower end of the rear side of the rolling goods shelf, the foot switch is manually treaded with feet, the foot switch directly controls the blocking mechanism to fall down, the blocking effect on a material box is eliminated, at the moment, the material box slides to a material taking port in the front side of the material frame from the rear side of the material frame, simple operation, convenient use, and humanized and reasonable design are achieved, a large amount of labor force is saved, and the working efficiency is increased; and moreover, the device is simple in structure, convenient to machine and maintain, and free of harsh requirements for the manufacturing level, installation precision, operation conditions, lubrication and the like of parts.