36results about How to "Reduce compressive load" patented technology

Disclosed is a packed, highly compressed cuboid-shaped filter tow bale, the top side and bottom side of which are free from noisome curvatures or constructions. The bale is characterized by the fact that (a) the bale has a packing density of at least 300 kg/m³, (b) the bale is entirely wrapped in an elastic packaging material which is provided with one or several convectively airtight connections, and (c) the upper side and lower side of the bale are substantially planar such that a flat plate which fully covers the bale can be pressed onto the upper side of the bale via a centrally effective normal force of 100 N and at least 90 percent of the surface of the upper side of the bale, which lies within the largest rectangle that can be inscribed by vertically projecting the bale onto the pressed plate, has a maximum distance of about 40 mm from the flat plate when the unopened bale is placed on a horizontal plane. A particularly suitable method for producing said bale comprises the following steps: (a) filter tow is supplied in a compressed form; (b) the compressed filter tow is enveloped in a wrapping; (c) the wrapping is closed in an airtight manner; and (d) the wrapped bale is relieved of the load. The wrapping of such a bale is largely prevented from bursting as a result of the prevailing internal pressure. The inventive bale has an ideal cuboid shape such that curvatures negatively affecting the bale during transport, or constructions hampering the behavior of the filter tow, are largely prevented from occurring.

This invention provides a radiation boundary integrator (“RBI”) for integrating sound radiation from mid-range and high-frequency sources in multi-way loudspeakers. The RBI is a substantially solid boundary that is placed over the mid-range speakers to provide smooth, wave-guiding side walls to control the angular radiation of the high-frequency sound waves emanating from the high-frequency sound sources. To allow the mid-range frequency sound waves generated from mid-range sound sources to pass through the RBI, the RBI is designed with openings. To further prevent the possibility of having high-frequency sound radiate through the openings in the RBI, the RBI may be designed with porous material in the openings of the RBI. The porous material would be transparent to the mid-range sound radiation, but would prevent the high-frequency sound radiation from being disturbed by the openings in the RBI. As such, the RBI provides an outer or front surface area that forms an acoustical barrier to high frequencies radiating across the front surface, yet is acoustically transparent to mid-range frequencies radiating through openings in the RBI. The RBI may also serve as a volume displacement device to compression-load the mid-range sound sources by contouring the back side of the RBI to the shape of the mid-range sound sources thus reducing the space between the RBI and the mid-range sound sources and loading the mid-range sound sources to generate greater mid-range sound energy.

A fan includes an outer casing having an air inlet and an air outlet, and an impeller housing located within the casing. An impeller is provided within the impeller housing for generating an air flow along a path extending from the air inlet to the air outlet through the impeller housing. A motor for driving the impeller is located within a motor housing connected to the impeller housing. A foam annular seal is located between the impeller housing and a seat to inhibit the leakage of air between the impeller housing and the casing. A plurality of resilient supports is provided between the impeller housing and the seat to reduce the load on the annular seal.

The invention is a mantel or shelf made of a solid block of reclaimed wood with a hidden mounting assembly. The mantel has sufficient thickness, depth and length to accommodate an elongated L-shaped sheet metal bracket with planar horizontal and vertical flanges to allow selective lateral positioning of the mantel relative to its securement to spaced vertical wall studs. An L-shaped opening in the rear of the mantel is formed by a deep horizontal slot and a shallow vertical recess extending down from the slot. The slot is parallel to and near the top of the mantel, and receives the horizontal flange. The recess receives the vertical flange so the mantel is flush with the wall. A mounting fastener inserted into the mantel pierces the horizontal flange to capture the bracket and secure the mantel to the wall. The bracket, slot and recess are hidden from view during use.

The invention discloses a hybrid bipolar plate assembly for a fuel cell, which includes a shaped cathode half plate and a stamped metal anode half plate. The stamped metal anode half plate is nested and fixed on the shaped cathode half plate. Each half plate has a reactant side and a coolant side, a feed region, and a header having a plurality of header holes. The coolant side of the shaped cathode half plate has support features that may be different from and do not need to correspond to cathode channels formed on the opposing reactant side. The coolant side of the stamped metal anode half plate has a platform corresponding to an anode channel formed on the opposite oxidant side. The platform defines a plurality of coolant channels on the coolant side of the stamped metal anode half plateand abuts against the coolant side of the shaped cathode half plate.

The present invention provides a method for forming a pressed metal component, a method for manufacturing such a pressed component, and a die apparatus for forming such a pressed component which decrease the size and the degree of complexity of equipment used for forming a pressed metal component having a plate-shaped base portion and a tubular boss portion extending from the base portion and allow formation of the boss portion in a wide variety of shapes. A piercing die 110, a holding body 120, and a piercing punch 130 are used to form a pressed component 90. The piercing die 110 has a receiving portion 111, an outer shape-forming portion 112, and a die-side cutting edge 113. The piercing punch 130 has an inner shape-forming portion 131, a punch-side cutting edge 132, and a straight portion 133. In a process of forming the pressed component 90, the piercing punch 130 is pressed against a preform 90′ formed from a blank BL and having a preliminary boss portion 92′ so as to cause part of the preliminary boss portion 92′ to flow toward the outer shape-forming portion 112, and so as to then cut off another part of the preliminary boss portion 92′ to thereby form a boss portion 92.

This invention relates to surgical suturing devices and methods by which suture may be passed through tissue during surgery, and, more particularly, to an improved blade of a suture passer needle. The suture passer needle includes a first side, a second side, and a blade disposed at an end of the needle. The blade has a first edge extending from the first side of the needle and a second edge extending from the second side of the needle, which converge to a tip of the blade. A notch is disposed in the blade and forms an opening in the first side of the blade. The blade also has one or more cutout portions distal and/or proximal the notch, which minimize the stress and strain placed on the blade. The suture passer needle can be incorporated into surgical suturing devices or suture passer devices to pass suture through a tissue body.

A centrifugal blood pump prevents a shaft member from oscillating due to expansion of a pump housing resulting from pressurization of the blood. The centrifugal blood pump is manufactured by assembling a bottom member 21 and a lid member 22, and compressing them in a direction in which the bottom member 21 and the lid member 22 approach each other by a deformation amount along their outer circumferential walls. The lid member and the bottom member are joined while in the compressed state in order to create a preloading force between the shaft member and bearings to resist the expansion due to pressurization of the blood during use.

A seal assembly for a reciprocating rod of a reciprocating compressor, a reciprocating compressor with the seal assembly, and a method of operating the reciprocating compressor with the seal assembly to prevent leakage of gas once the compressor has been shut down. The pressure difference between opposite sides of a static seal is kept low during normal operation to reduce wear of the static seal. When the compressor is shut down, a high pressure difference between opposite sides of the static seal assists with sealing.

In the method for evaluating a welded part, it is performed to make an inspection press member press the welded part for connecting a plurality of wires with each other to apply a predetermined compressive load on the welded part. Next, it is performed to measure an amount of strain of the welded part when it is subjected to the compressive load. The evaluation of the welded part in welding condition is carried out by judging whether or not the measured amount of strain is within a predetermined range.

An improved ski binding heel unit comprising a lateral heel release mechanism to release the heel of a ski boot from a ski is disclosed. The ski binding heel unit typically includes an independent vertical heel release mechanism, an independent lateral heel release mechanism, and a longitudinal pressure compensator. The improved ski binding heel unit allows a reduction in the height of the heel pad. This reduction in heel pad height is generally achieved by eccentrically positioning two or more of the springs within the heel unit while superpositioning the resultant centroid of the forces of friction between the lower housing and mating heel track structures that house at least one of the eccentrically positioned springs to foster smooth longitudinal displacement of the lower heel housing when the ski flexes and counterflexes.

A coolant flow field is formed on a surface of a second metal separator. Further, a rubber bridge dividing the coolant flow field and a coolant supply passage is formed on the surface. The rubber bridge includes a plurality of channels connecting the coolant flow field and the coolant supply passage, a plurality of grooves between the channels, and a partition closing the grooves to prevent the flow of a coolant in the respective grooves.

In a rack boot having a bellows portion, a cylindrical portion which is formed at one end of the bellows portion so as to be fixed to a tie-rod and a second cylindrical portion which is formed at the other end of the bellows portion so as to be fixed to a steering gearbox, the bellows portion is divided into a first bellows portion which extends from a third ridge of ridge portions resulting when the ridge portions are counted from an end portion of the bellows portion which lies to the second cylindrical portion to the other end portion thereof which lies to the first cylindrical portion and a second bellows portion which extends from the third ridge to the end portion thereof which lies to the second cylindrical portion, and at least the first bellows portion is formed into a tapered shape.

An interposer assembly including a plate and a plurality of conductive contacts extending through plate passages for forming electrical connections with pads on overlying and underlying substrates.

The invention discloses a storm-resistant double-deck equipment transport ship which comprises a fixing device, a power device, an advection device, a forecastle deck and a bridge building, a single-side tail building is arranged on one side of the fixing device, the power device is fixedly connected with the fixing device, the advection device is fixedly connected with the fixing device, and the forecastle deck is arranged on the upper side of the fixing device. The bottom end of the forecastle deck is connected with the upper side of the fixing device in a fastening mode, a bridge is arranged at the upper end of the forecastle deck, one side of the bridge is connected with one side of the forecastle deck in a fastening mode, the fixing device comprises sheet body assemblies, a connecting bridge and a main deck, the sheet body assemblies are arranged on the two sides of the connecting bridge respectively, and each sheet body assembly comprises a sheet body. The bottom side of the main deck is fixedly connected with the sheet body and the upper side of the connecting bridge, the upper side of the main deck is fixedly connected with the lower side of the forecastle deck, one side of the single-side tail building is movably connected with one side of the main deck, and the two ends of the connecting bridge are fixedly connected with one side of the sheet body.

The invention provides a method for rapidly hardening, pelletizing and filling tailings of a waste open pit. Comprising the following steps: S1, settling and thickening all tailings; s2, underflow deep dehydration; s3, carrying out rapid hardening, cementing and pelletizing; s4, solidifying and stacking the pellets; s5, transporting and stacking in an open pit; s6, soil dressing covering and ecological restoration. The method comprises the following steps: deeply dehydrating all tailings, adding a gelling agent and an accelerator, forming tailings pellets with a certain size by adopting a pelletizer, and transporting the tailings pellets to an open pit for mechanical stacking and discharging after rapid coagulation. A large number of pores among tailings pellets realize the light weight of a stacking body, and the pressing load on an open pit isolation ore pillar is reduced; a secondary reconstructed water source conservation body is formed, the surrounding hydrological environment of the open pit is not damaged, and ecological restoration of the open pit is facilitated; no bleeding exists in an open pit, the device is not affected by rainwater soaking when encountering rainfall, accumulated water can be rapidly filtered and discharged, and the key problems that the concentration of slurry conveyed by a tailing cemented filling pipeline in the open pit is low, bleeding is much, the strength is ineffective due to rainfall influence, and drainage is difficult can be effectively solved.

The present invention provides a medical polyurethane material containing a lactone group, and a medical catheter prepared therefrom. The medical polyurethane material is prepared by polycondensing 4,4'-diphenylmethane diisocyanate, butanediol, polytetrahydrofuran and a butyrolactone group-containing substance; and the butyrolactone group-containing substance contains at least two hydroxyl groups,and the molar concentration of the butyrolactone group in the medical polyurethane material is 5-20 mmol/g. The lactone group is in a closed-loop state when the medical polyurethane material is in adry state, and can maintain the hydrophobicity of the polyurethane and does not affect the extrusion molding of the polyurethane material, and the lactone group undergoes a hydrolysis ring-opening reaction in an aqueous environment or in the human body to increase the hydrophilicity of the polyurethane material and significantly reduce the elastic modulus of the polyurethane material, so the medical catheter prepared from the material has a high rigidity in vitro, and the softness is significantly increased after entering human blood vessels.