187results about How to "Reduce stress peaks" patented technology

A hollow golf club incorporating a stress reducing feature including an aperture located on the crown or sole of the club head. The location and size of the stress reducing feature and aperture, and their relationship to one another, play a significant role in selectively increasing deflection of the face.

A hollow golf club incorporating a stress reducing feature including a crown located stress reducing feature, located on the crown of the club head, and a sole located stress reducing feature, located on the sole of the club head. The location and size of the stress reducing features, and their relationship to one another, play a significant role in reducing the peak stress seen on the golf club's face during an impact with a golf ball, as well as selectively increasing deflection of the face.

A hollow golf club incorporating a stress reducing feature including at least a toe located stress reducing feature or a heel located stress reducing feature at least partially located on the skirt of the golf club head. The location and size of the stress reducing feature and their relationship to one another play a significant role in selectively increasing deflection of the face.

An apparatus and method for the creation, placement and control of an area of electrical ionization within an internal combustion engine combustion chamber. This area of electrical ionization is positioned so that all of the fuel being injected into the combustion chamber must pass next to or through the area of electrical ionization to ensure that combustion has been initiated for all of the fuel as it is injected. This area of electrical ionization can be kept on as long as it is necessary to insure that the all of the fuel that is injected into the combustion chamber can be completely combusted. An engine equipped with this electrical ionization device has its fuel economy enhanced by timely, controlled, and complete combustion of all of the fuel injected into its combustion chamber. Furthermore, the pollutant emissions of both oxides of nitrogen and unburned hydrocarbons are reduced dramatically. Further, cold starting capability of this engine is greatly enhanced by a major reduction in the time necessary for the engine to warm up and a major reduction of pollutants created by the engine during the warm-up period. Additionally, this method of combustion also allows the engine to operate at a higher speed (rpm) allowing an increase in peak power output.

A permanent magnet rotating machine has a stator, in which armature windings are formed in a plurality of slots formed in a stator iron core, and also has a rotor, in which two magnet insertion slots are formed for each pole in a rotor iron core in a V shape when viewed from the outer circumference of the rotor and one permanent magnet is embedded in each magnet insertion slot with polarity alternating for each pole; a wall at one end of the magnet insertion slot on the external diameter side of the rotor is formed with three arcs having different curvatures, one of the three arcs being parallel to the outer circumference of the rotor, and a wall at the other end of the magnet insertion slot on the internal diameter side of the rotor is formed in an arc shape.

A bone plate having a first, bone-facing surface and an opposing second surface has an elongate shaft portion and a head portion that is shorter and wider in comparison thereto, with at least one through hole extending through the bone plate from the first surface to the second surface in the shaft portion. The through hole comprises a variable-angle portion with a hole axis configured to receive a threaded head of a locking screw therein at a desired angle within a permitted range of angulation relative to the hole axis. The second surface has at least one depression which extends therein along a portion of the second surface between the side wall and the through hole, the depression extending about a periphery of the through hole.

In a rigid drive axle for a vehicle comprising an axle beam provided with a differential housing, at least two tubular axle sections extending in opposite directions from the differential housing and spring support brackets projecting laterally from the axle tube sections, the spring support brackets are integral parts of the axle tube sections facilitating adaptation to various automotive vehicles and forming a relatively low-weight structure which increases the ride comfort and driving safety and also provides for minimal tire wear.

A wind turbine (WT) is disclosed, wherein the rotor hub (1) transmit the driving torque to a planet carrier (5) of a planetary type gear transmission and a main bearing (9) attached to the supporting structure (3), such as the nacelle (N), takes up the transversal shear stresses and bending moment forces from the rotor hub (1). The ring gear (8) of the gear transmission is flexibly secured to the supporting structure, so that temporary radial displacements of the toothed inner surface of the ring gear may be allowed, whereby the radial forces between the planet gears (7) and the ring gear (8) will be substantially equalized between the planet gears (7). Alternatively or additionally, the flexibility allows for temporary angular displacements of the ring gear (8) about the axis of rotation. Thus, rapid variations in the drive torque will be dampened and peak stresses on the transmission will be reduced, and the operation of the electrical generators will be smoothened due to the dampening effect of the flexible support of the ring gear (8).

Provided is a concrete arch bridge arching method which is suitable to be used for a huge-scale concrete railway long span arch bridge. Under the condition of not increasing the cross section size of a main arch ring, the method effectively reduces pressure stress of outer wrapped concrete on the position of the main arch ring, poured in early time, so load carrying of arch rings is more uniform, and related specification requirements are satisfied. A concrete arch bridge comprises a concrete filled steel tube stiff skeleton and an outer wrapped arch ring concrete structure. After pouring of a side box bottom plate of the outer wrapped arch ring concrete structure is completed, a certain range of an arch springing is selected, and a whole-section outer wrapped arch ring concrete structure is firstly formed, and unbalance loading on the main arch ring is adjusted through stretching a certain number of arch springing whole-section outer wrapped segment buckle cables and arch springing whole-section outer wrapped segment back cables, and the arch springing whole-section outer wrapped segment buckle cables and the arch springing whole-section outer wrapped segment back cables are removed after a side box concrete cross section of the outer wrapped arch ring concrete structure is completely formed.

A reciprocating plunger pump fluid end having increased material thicknesses in typical high stress concentration areas includes locating valves in spherically segmented shaped suction and discharge bores adjacent to chamfered transition areas to provide for reduced stress concentrations, resistance to fatigue failure and erosion and ease of access for maintenance. Among other features the housing includes a valve retainer assembly integrally mounted inside the housing which includes a profile to reduce stresses in the bores and facilitate access for replacement of internal components.

The invention belongs to the technical field of aero-engine turbine cooling, and relates to a tapered inclined exhaust splitting seam structure for a turbine blade trailing edge. The inclined exhaustsplitting seam structure comprises a hollow turbine blade, an inner cavity cool air channel, a trailing edge exhaust splitting channel and trailing edge splitting seam partition ribs, wherein the inner cavity cool air channel is formed inside the hollow turbine blade, the trailing edge of the hollow turbine blade is provided with the trailing edge splitting seam partition ribs arranged side by side, and the trailing edge exhaust splitting seam channel is formed between the trailing edge splitting seam partition ribs arranged side by side for allowing cooling air to be discharged out of the blade and meanwhile carrying out air film coverage cooling on the blade trailing edge. According to tapered inclined exhaust splitting seam structure for the turbine blade trailing edge, the cool air canflow much smoothly, so that flow resistance and loss of the cool air in an cavity of the blade is reduced, and the flow resistance can be reduced by about 16%; and through designing an inclined exhaust trailing edge splitting seam into a tapered structure, the outflow speed of the cool air can be improved, internal convection heat exchange is strengthened, an air film coverage dead zone is reduced, in this way, comprehensive cooling effects of the blade trailing edge is further improved while blending loss is reduced, and heat exchange can be enhanced by about 8%.

A heat exchanger, in particular an intercooler, is provided that includes at least one collector box that has a base. At least one tube engages into a passage in an approximately perpendicular manner with respect to the base, the passage protruding out of the base and surrounding a tube end, and the passage has a rectangular cross-section that is adapted to the outer circumference of the tube. The aim of the invention is to further extend the service life of the heat exchanger with a further reduction of the wall thickness of the collector box base as well as of the tube. This is achieved in that a wall thickness of the passage is thinned at least in a corner region.

A golf club head with a front wall, a rear wall and a reinforced crown includes ribs in the crown that are spaced more closely together near the front wall than near the rear wall. Preferably, the ribs radiate from a point in space located forward of the front wall. This arrangement of ribs significantly increases the fundamental structural frequency of the club head and significantly reduces the peak stress in the crown of the club head when compared with ribs extending perpendicular to the front wall and parallel to each other.

A termination anchor having a neck region, a mid region, and a distal region. An expanding passage through the anchor from the neck region to the distal region is bounded by an internal surface. Exposed strands on a cable are trapped within this expanding passage by infusing them with liquid potting compound (either before or after the strands are placed within the passage). This liquid potting compound solidifies while the strands are within the anchor to form a solidified potted region. The present invention optimizes the profile of the internal surface in order to transfer stress occurring in the neck region to the mid region and the distal region. By transferring some of this stress, a more uniform stress distribution and a lower peak stress are achieved.

Airfoil outer wall thickness of a gas turbine engine blade is increased in the zone that is proximate the trailing edge and blade hub by forty to sixty percent (40-60%) greater than comparable greatest wall thickness anywhere else along the trailing edge from outboard that zone all the way to the blade tip. The increased thickness zone includes a transition zone that bridges the respective airfoil outer wall thicknesses proximate the hub and tip of the blade. Some embodiments also incorporate pedestals with compound curve fillets in the increased wall thickness zone. The increased thickness zone reduces blade cracking propensity and enhances service life.

A composite resin tank includes a wall joined to a dome along a joint. A softening strip is located in the joint.

The invention relates to an anti-collision device by combing a chiral negative Poisson's ratio structure with a honeycomb structure, and belongs to the technical field of impact protection devices. The anti-collision device comprises an anti-collision device body, wherein the anti-collision device body is internally provided with a rigid inner cushion layer, a chiral negative Poisson's ratio layer, a rigid middle cushion layer, a honeycomb layer and a rigid skin, the chiral negative Poisson's ratio layer is a chiral negative Poisson's ratio structure arranged in the in-plane direction, the honeycomb layer is a honeycomb structure arranged in the plane outer direction, the rigid inner cushion layer, the rigid middle cushion layer and the rigid skin are fixedly connected with the adjacent layers, and the outer surface of the rigid skin for the highly corrosive environment can be sprayed with an anticorrosive material. According to the anti-collision device, the characteristics of light energy absorption of a porous material and good collision resistance performance of the negative Poisson's ratio structure are fully exerted. Compared with a traditional anti-collision device, the anti-collision device has the advantages of being light in weight, good in energy absorption, capable of resisting continuous impact, and easy to repair, and can be widely applied to the field of safety protection of land and ocean building structures.

An implant system is described to decrease the risk of hip fracture in humans determined to be at increased risk for hip fracture, over a time span well over several years after implantation. This implant increases the size of the contact area on the proximal femur at the time of a fall, decreasing contact pressures and contact stresses. The implant may be able to absorb energy on impact or cause an increase of energy absorption by the soft tissues, thus decreasing the energy transfer to the proximal femur at the time of a fall. The implant may also strengthen the proximal femur, while minimizing stress shielding of the surrounding bone. In addition, it minimizes the risk of displacement should fracture occur, thus minimizing the risk of formal fracture surgery. The method of application minimizes risks associated with initial application of the implant.

The invention relates to a steel-plastic complex swash plate formed in one step. The steel-plastic complex swash plate formed in one step comprises main plates, flow guide holes are formed in the upper ends and the lower ends of the main plates, and manholes are formed in the lateral part of the middle of the main plate. The steel-plastic complex swash plate formed in one step is characterized in that the number of the main plates is two, the two main plates are connected and supported through supporting blocks, gaps are formed between the two main plates, the edges of the two main plates are connected, and the gaps between the two main plates form a closed cavity; the two main plates are folded plates with corresponding folding marks, and the folding marks are located in the vertical direction; a steel plate screen is arranged on the outer side surface of each main plate; plastic anticorrosive layers are arranged on the inner wall of a tank body, the main plates and the outer side surfaces of the steel plate screens. Compared with the prior art, the steel-plastic complex swash plate has the advantages that the strength is high, the service life is long and the maintenance cost is low.