77 results about "Stress bone" patented technology

A method of separating a sheet of coated brittle material comprises the steps of providing a sheet of layered brittle material comprising a brittle layer and a coating material adhered to a surface of the brittle layer and applying a laser along a separation line in the sheet, thereby cutting the coating material and separating the brittle layer by inducing a stress fracture therein.

A method for the measurement of the stresses and pressure perturbations surrounding a well, and a system for computing the optimum location for initiating a hydraulic stress fracture. The technique includes using sensors attached to the wellbore casing connected to a data analyzer. The analyzer is capable of analyzing the stresses on the well system. Using an inverse problem framework for an open-hole situation, the far field stresses and well departure angle are determined once the pressure perturbations and stresses are measured on the wellbore casing. The number of wellbore measurements needed for the inverse problem solution also is determined. The technique is also capable of determining the optimal location for inducing a hydraulic fracture, the effect of noisy measurements on the accuracy of the results, and assessing the quality of a bond between a casing and a sealant.

The present invention is directed to a lighweight the with a tapered support angle reverse, to the angle of the roof, a tile having uniform contact with the roof surface that does not require battens and can be walked on without the fear of breaking. This the can be fabricated in several materials including concrete, ceramic, porcelain or clay. By increasing the surface area of the underside of this tile with numerous cavities and ribs, the capability for dissipating heat is greatly increased. The lightweight tile has the option of incorporating a breathable, underlying cushioning / insulating With this system of interlocking and overlapping tiles, when the top tile overlaps the tile below the top tile cantilevers and lays flat on the tile below it, greatly reducing the vulnerability to stress fracture because of the reverse angle and supporting ribs structure of the tile.

A multiple punch and multiple die assembly has a workpiece protector which is a punch lifter that is operatively associated with each punch for supporting each of the punches in an inactive position as an active punch is moved by the ram to the active, i.e. operating position to thereby eliminate scoring or marking of the sheet material or other workpiece that is being punched. To eliminate the need for hand tools and hand assembly or disassembly, a manually moveable retainer on the punch assembly is provided that can be moved by hand between a punch-releasing and punch-retaining position for holding the punches within the multi-punch assembly during operation. To prevent stress fractures that formerly occurred in die carriers, support of each die is distributed between two different die components thereby reducing impact stress on the carrier as the ram drives the punch through the workpiece.

A method for the measurement of the stresses and pressure perturbations surrounding a well, and a system for computing the optimum location for initiating a hydraulic stress fracture. The technique includes using sensors attached to the wellbore casing connected to a data analyzer. The analyzer is capable of analyzing the stresses on the well system. Using an inverse problem framework for an open-hole situation, the far field stresses and well departure angle are determined once the pressure perturbations and stresses are measured on the wellbore casing. The number of wellbore measurements needed for the inverse problem solution also is determined. The technique is also capable of determining the optimal location for inducing a hydraulic fracture, the effect of noisy measurements on the accuracy of the results, and assessing the quality of a bond between a casing and a sealant.

An improved face for a golf club head includes shallow and deep markings configured to provide a pleasing appearance when viewed head on, and to frame the central region of the impact surface of the face when viewed at address. Use of only shallow markings in the central region of the impact surface prevents existence of stress fractures resulting from use of deep markings in the central region. This allows for a face thinner than those incorporating conventional grooves in the central regions of their impact surfaces, resulting in both superior resistance to cracking and improved C.O.R. Specified methods of manufacture are particularly suited for making clubs incorporating these shallow and deep markings.

Provided are methods, devices and systems for controlled removal of thermal energy from a fluid within a thermally conducting metal conduit. The system allows for the in situ formation of a reversible plug that can stop the flow of fluid through the conduit, particularly without inducing thermally induced stress fractures or breaches in the conduit. The devices and systems include a thermal transfer device that can be adapted to be in thermal communication with a thermal conducting metal conduit containing a fluid, particularly a flowing fluid. The devices and systems allows for controlled re-heating of the conduit without inducing thermally induced stress fractures or breaches in the conduit to restore fluid flow through the conduit.

A multiple punch and multiple die assembly has a workpiece protector comprising a punch lifter that is operatively associated with each punch for supporting each of the punches in an inactive position as an active punch is moved by the ram to the active, i.e. operating position to thereby eliminate scoring or marking of the sheet material or other workpiece that is being punched. To eliminate the need for hand tools and hand assembly or disassembly, a manually moveable retainer on the punch assembly is provided that can be moved by hand between a punch-releasing and punch-retaining position for holding the punches within the multi-punch assembly during operation. To prevent stress fractures that formerly occurred in die carriers, support of each die is distributed between two different die components thereby reducing impact stress on the carrier as the ram drives the punch through the workpiece.

A color switchable stress / fracture sensor in combination with a structure. The combination apparatus includes a structure requiring stress and / or fracture detection, and at least one elasto-mechanoluminescent material at least partially dispersed in and / or on the structure and / or in a coating on the structure. The combination apparatus further includes at least one fracto-mechanoluminescent material at least partially dispersed in and / or on the structure and / or in a coating on the structure, and at least one fiber optic cable positioned to receive and transmit sufficient light emitted from the elasto-mechanoluminescent material due to stress applied to the elasto-mechanoluminescent material and to receive and transmit sufficient light emitted from the fracto-mechanoluminescent material due to fracture of the fracto-mechanoluminescent material.

A method of inspecting aircraft for evidence of stress fracture and other external abnormalities comprising: (a) identifying an aircraft surface to be inspected; (b) determining if the surface to be inspected is visually impeded by a coating compound selected from the group of compounds including paint, topcoats, and primers; (c) if present removing all visually impeding compounds identified in (b); (d) inspect the aircraft surface identified in (a); (e) identify and procure adhesive tape patch with properties generally consistent to those demonstrated in 3M product 8681 HS Polyurethane Protective Tape; and, (f) applying the adhesive patch of (e) over the inspected aircraft surface.

Disclosed herein is a repair apparatus and method for pipe and fittings. In one form, the method relates to utilizing fabric-like material which is intermixed with an adhesive. In one form, the adhesive is a two-part adhesive which hardens to a semi-rigid state to avoid stress fractures through repeated expansion and contraction due to physical movement or temperature variation in the pipe and / or fittings. In one form the method and apparatus are particularly useful in thermoplastic pipes. In other forms, the method is particularly useful in metal pipes and fittings, or in non-pipe structures.

Synthetic polymer reinforcing fibers provide dispersability and strength in matrix materials such as concrete, masonry, shotcrete, and asphalt. The individual fiber bodies, substantially free of stress fractures and substantially non-fibrillatable, have generally quadrilateral cross-sectional profiles along their elongated lengths.

An improved submerged entry nozzle is provided which is useful in the casting of aluminum killed molten steel. The nozzle has an improved slagline sleeve or collar which surrounds the outer portion of the nozzle to protect it from corrosion during the casting process. The slagline sleeve is made from resin bonded zirconia / graphite which has been formulated so that upon curing of the resin to form resite, there is a reduction in the contractile tendency which results in a reduction in stress fracturing. The reduction of the contractile tendency and the resulting resistance to stress fracturing is achieved by adding an effective amount of calcium oxide to the resin-zirconia-graphite mixture which is used to form the sleeve.

Disclosed herein is a repair apparatus and method for pipe and fittings. In one form, the method relates to utilizing fabric-like material which is intermixed with an adhesive. In one form, the adhesive is a two-part adhesive which hardens to a semi-rigid state to avoid stress fractures through repeated expansion and contraction due to physical movement or temperature variation in the pipe and / or fittings. In one form the method and apparatus are particularly useful in thermoplastic pipes. In other forms, the method is particularly useful in metal pipes and fittings, or in non-pipe structures.

The invention provides a method for improving the seam net complexity through circulation stress fracturing. By aiming at a sand-mud interbedding developing compact reservoir, the reservoir longitudinal stress feature study is firstly started; concrete reservoir ground stress factors influencing the seam expansion are clarified; then, the influence of the circulation stress fracturing on the seam net expansion is studied; and concrete circulation pump injection parameters are optimized. Through the study on the reservoir longitudinal stress distribution and the stress circulation rock fracture experiment study, the sand-mud interbedding developing compact reservoir is discovered; through the circulation pump injection fracturing, the complicated rock shearing damage can be generated, so that the seam net complexity degree is very complicated; the breakthrough of a plurality of sand-mud stress shielding layers in the longitudinal direction can be realized, so that a plurality of thin inter-oil layers in the longitudinal direction can be sufficiently transformed; and a more complicated seam net system is formed in the transverse direction. Compared with the early stage mixed water volume fracturing technology, the method has the advantage that the great improvement of single-well yield is facilitated.

A method for making a hard pretzel product that effectively absorbs a seasoning slurry, such as an oil-based seasoning added after baking. In a preferred embodiment, three dough strands extruded simultaneously are cut and formed into a triad arrangement of three dough rods. Several process steps are used singly or in combination to promote the formation of a stress cracking at the intersection between these three rods in the triad formation. During the final drying stage and a seasoning stage in a seasoning tumbler, this stress cracking is sufficient to allow separation of the three rods into individual pretzel sticks. Each of these pretzel sticks has a longitudinal surface area in the proximity of the original stress fracturing which effectively absorbs a seasoning slurry.

A vertical wind turbine having a plurality of blades having an aerodynamic helix core laminated with natural bamboo is provided. Each blade with its aerodynamic core laminated with natural bamboo also includes: a framework which is resistant to stress fractures and minimizes or eliminates traveling stress concentrations. The hybrid helical blade construction includes honeycombed ABS plastic core which provides superior lightweight mechanical strength.

A method and apparatus for forming controlled stress fractures in metal produces electrically isolated, closely spaced circuit sub-entities for use on a metallized printed wiring board. A polymeric substrate has a layer of metal adhered to the surface, and the metal layer is formed into entities. Each entity has a fracture initiating feature formed into it, which serves to initiate and / or direct a stress crack that is induced in the metal. The entities are fractured in a controlled manner by subjecting the substrate and the entities to mechanical stress by a rapid thermal excursion, creating a stress fracture in the entity extending from the fracture initiating feature. The stress fracture divides each entity into two or more sub-entities that are electrically isolated from each other by the stress fracture. The resulting structure can be used to form circuitry requiring very fine spaces for high density printed circuit boards. The rapid thermal stress may be induced by a high intensity, strobed xenon arc lamp.

Of the methods provided herein, is a method comprising: introducing into a fracture within a subterranean formation a first treatment fluid comprising uncoated first proppant particulates; introducing into the fracture a second treatment fluid comprising non-hardenable coated second proppant particulates to form a proppant pack; and introducing into the fracture a third treatment fluid comprising hardenable coated third proppant particulates intermittently between a spacer fluid to form pillars.

A novel probe design is presented that increases a probe tolerance to stress fractures. Specifically, what is disclosed are three features increase stress tolerance. These features include a various union angle interface edge shapes, pivot cutouts and buffers.

A concrete re-entrant corner crack inhibiting device for implantation into a re-entrant corner of a casted concrete structure serves to inhibit stress fractures from developing at the cured concrete re-entrant corners. The device includes a re-entrant corning brace for cornering and embedding onto the re-entrant corner, a radial arm radiating outwardly from the brace so to extend into the cement structure and a fracture interrupting unit transversely connected to the radial arm so as to intercept, interrupt and inhibit the development and spread of stress fractures emanating from a cured cement re-entrant corner.

Synthetic polymer reinforcing fibers provide dispersability and strength in matrix materials such as concrete, masonry, shotcrete, and asphalt. The individual fiber bodies, substantially free of stress fractures and substantially non-fibrillatable, have generally quadrilateral cross-sectional profiles along their elongated lengths. Preferred fibers and matrix materials having such fibers demonstrate excellent finishability in addition to dispersion and toughness properties.

The invention discloses a lumbar interbody fusion cage. The lumbar interbody fusion cage comprises a fusion cage body, a tail plate and a distraction nail, wherein a cavity for containing a bone graft is formed in the fusion cage body; the tail plate is detachably connected to the rear side surface of the fusion cage body; the distraction nail comprises a first distraction nail and a second distraction nail; the first distraction nail is configured to be driven into the upper segment of a vertebra; and the second distraction nail is configured to be driven into the lower segment of the vertebra. The lumbar interbody fusion cage has the beneficial effects that location moving such as withdrawal of the fusion cage can be prevented, so that the fusion cage can be located relatively well; meanwhile, the distraction nails are driven into the upper segment of the vertebra and lower segment of the vertebra in a vertical direction; and after the fusion cage is implanted, a human body is upright, and the possibility of stress fracture does not occur.

An plumbing pipe locator and support is provided for fixing plumbing pipes in position relative to studs in a building. The pipe locator and support comprises an elongated supporting strap having upper and lower sides extending along opposing sides of a longitudinal axis. A first plurality of longitudinally aligned, larger pipe openings are interspersed with a second plurality of smaller, aligned fastener openings that extend into ends of the strap. The upper and lower sides undulate to provide a substantially uniform width between first holes and the adjacent sides and the second holes and the adjacent sides. This undulating surface can provide a strap using less material, with reduced manufacturing time, and a strap that can bend without forming creases or stress fractures.

The invention discloses a stress loading device and system for constructing a stress fracture animal model and a method, and belongs to the technical field of animal experiment models. The device comprises a tissue fixing unit for fixing experimental animal skeletons, a laser displacement sensor is arranged at one side of the tissue fixing unit, and a stress sensor is arranged at the other side of the tissue fixing unit. A linear actuator is arranged at the other end of the stress sensor, and the tissue fixing unit, the stress sensor and the linear actuator are coaxially arranged. A linear guide rail is further arranged below the tissue fixing unit. The invention further discloses a controllable stress fracture animal model construction system based on the stress loading device. The system comprises the stress loading device, a real-time data collecting and processing module and a PC side LabVIEW control program. The device is precise and controllable in loading strength and time, and the success rate of establishment of the model can be effectively increased.