207results about How to "Reduce twist" patented technology

The present invention provides for a lightweight metal framing member having a central web and two parallel spaced apart side walls extending upwardly from the sides of the web. The framing member has at least one longitudinally oriented rib extending the length of the web of the framing member to aid in reducing shrinkage and twisting of the framing member when non-symmetrical reinforcing structures are found in the framing member.

Traffic information, including flow information and incident information, obtained through a traffic management system for providing and facilitating the exchange of traffic information between a remote location and a vehicle may be used in route calculation by a navigation device. The navigation device may recalculate a route based on anticipated user error. Alternatively, the navigation device may recalculate a route using received traffic information triggered by the receipt of a traffic information update, or triggered by the passage of an amount of time. The broadcast rate of traffic information updates may vary temporally (providing more frequent updates during peak commute times) or geographically (providing more frequent updates to metropolitan areas with increased traffic information needs). If route calculation is triggered by an elapsed amount of time, the amount of time may vary to be shorter during peak commute times. Additional route calculation techniques allow the incorporation of historical traffic information or the use of the most recent traffic information if incomplete traffic information is available. Still further route calculation techniques may calculate a best route by avoiding zigzagging or evaluating an assigned cost of a potential route.

A heat dissipation device by liquid cooling includes a casing, which has a spacing wall to form a channel therein. The casing has sidewalls and the inner surfaces of the sidewalls and the surface of the spacing wall are provided with a plurality of first toothed projections. An upper cover covers the casing and includes a liquid outlet and a liquid inlet at locations respectively corresponding to two corners of the channel. A plurality of posts are alternately placed inside the channel and a surface of each post is provided with a plurality of second toothed projections. Thereby, a liquid flowing inside the channel of the casing strikes the first and second toothed projections to promote flowing turbulence and increase heat transfer surface areas for heat dissipation.

A method for determining a rate of change of longitudinal direction of a subterranean borehole is provided. The method includes positioning a downhole tool in a borehole, the tool including first and second surveying devices disposed thereon. The method further includes causing the surveying devices to measure a longitudinal direction of the borehole at first and second longitudinal positions and processing the longitudinal directions of the borehole at the first and second positions to determine the rate of change of longitudinal direction of the borehole between the first and second positions. The method may further include processing the measured rate of change of longitudinal direction of the borehole and a predetermined rate of change of longitudinal direction to control the direction of drilling of the subterranean borehole. Exemplary embodiments of this invention tend to minimize the need for communication between a drilling operator and the bottom hole assembly, thereby advantageously preserving downhole communication bandwidth.

A method for determining a rate of change of longitudinal direction of a subterranean borehole is provided. The method includes positioning a downhole tool in a borehole, the tool including first and second surveying devices disposed thereon. The method further includes causing the surveying devices to measure a longitudinal direction of the borehole at first and second longitudinal positions and processing the longitudinal directions of the borehole at the first and second positions to determine the rate of change of longitudinal direction of the borehole between the first and second positions. The method may further include processing the measured rate of change of longitudinal direction of the borehole and a predetermined rate of change of longitudinal direction to control the direction of drilling of the subterranean borehole. Exemplary embodiments of this invention tend to minimize the need for communication between a drilling operator and the bottom hole assembly, thereby advantageously preserving downhole communication bandwidth.

A closed-loop method for geosteering includes acquiring logging while drilling data and processing the logging while drilling data downhole while drilling to obtain a geosteering correction (a correction to the drilling direction based upon the LWD measurements). The geosteering correction is further processed downhole to obtain new steering tool settings which are then applied to the steering tool to change the direction of drilling. These steps are typically repeated numerous times without the need for uphole processing or surface intervention.

In accordance with the invention, an internal combustion engine having reciprocating piston sleeves is realized comprising an engine block with a pair of cylinders, each cylinder having an intake port, an exhaust port and two linearly opposing pistons connected to two opposing crankshafts. A pair of piston sleeves are reciprocatingly mounted in each cylinder, one piston sleeve around each piston. Each piston sleeve is connected to one of two eccentric shafts that run parallel and adjacent to each crankshaft. The piston sleeves have ported slots in communication with either the intake ports or the exhaust ports of each cylinder. The eccentric shafts are mechanically connected to the crankshafts such that they move in unison.

An end effector for a mobile, remotely controlled robot includes first and second fingers; each finger fixed to a gear segment for rotation therewith; and a drive subsystem driving the gear segments and the associated fingers between open and closed positions.

The invention discloses a remote sensing image fusion method based on sparse representation. The method comprises the following steps of: firstly, establishing a linear regression model between a multispectral image and a brightness component thereof; secondly, performing sparse representation on a panchromatic image and the multispectral image by using high and low resolution dictionaries respectively, and acquiring sparse representation coefficients of the brightness component of the multispectral image according to the linear regression model; thirdly, extracting detail components according to the sparse representation coefficients of the panchromatic image and the brightness component, and implanting the detail components to the sparse representation coefficients of each band of the multispectral image under a general component replacement fusion framework; and finally, performing image restoration to obtain a multispectral image with high spatial resolution. According to the method, the sparse representation technology is introduced into the field of remote sensing image fusion, so that the defect that high spatial resolution and spectral information cannot be simultaneously preserved in the prior art is overcome; and the fusion result of the method is superior to that of the conventional remote sensing image fusion method on the aspects of spectral preservation and spatial resolution improvement.

By removing material of low permeability from within and around a perforation tunnel and creating at least one fracture at the tip of a perforation tunnel, injection parameters and effects such as outflow rate and, in the case of multiple perforation tunnels benefiting from such cleanup, distribution of injected fluids along a wellbore are enhanced. Following detonation of a charge carrier, a second explosive event is triggered within a freshly made tunnel, thereby substantially eliminating a crushed zone and improving the geometry and quality (and length) of the tunnel. In addition, this action creates substantially debris-free tunnels and relieves the residual stress cage, resulting in perforation tunnels that are highly conducive to injection under fracturing conditions for disposal and stimulation purposes, and that promote even coverage of injected fluids across the perforated interval.

The invention relates to a nano electrostatic spinning and staple fiber ring spinning integrated yarn forming method, and belongs to the technical field of textile processing. The method comprises the following steps: arranging an electrostatic spinning apparatus between each yarn guide hook of a ring spinning frame and a front roller jaw formed by a front roller corresponding to the yarn guide hook and a front rubber roll, enabling a receiving surface of the electrostatic spinning apparatus to stay on a same plane with a public tangential surface of a front leather roll and the front roller at the front roller jaw, forming an electrostatic spinning area between an electrostatic spray head and a receiving surface of a receiving plate, and combining and twisting a nano fiber net spun out from the electrostatic spray head and staple fiber strands passing by the receiving surface of the receiving plate. According to the method, the electrostatic spinning and a conventional ring spinning are reasonably integrated, so that the high-speed successful production of nano fiber yarns is guaranteed, the naon fiber net effectively captures exposed fibers and improves the winding tightness, and the yarn forming structure and performance quality of the nano fiber wrapped blended yarns can be greatly improved. Equipment involved in the method is universal, and the operation and the use are convenient.

The present invention relates to an automatic spinning new end forming method and its equipment. The roving machine utilizes the coder positioned at the drafting portion position to detect the full-yarn length when the bobbin can be fulled, and makes the roving machine spin to a certain length in low speed, after the roving is spun to a certain length, makes the roving machine operate in low speed, at the moment makes the spindle rail stop lifting movement and makes the yarn be in said height position, winds 2-3 turns of halching and makes the spindle rail be quickly lowered to form large thread pitch wind so as to make the roving do not take-off in its transportation process; changes the speed ratio of flywer and roller so as to reduce roving twist, and obtain undertwisted roving, and when the ultralowering of spindle rail is made to place, the yarn is stretch-broken to produce fuzzy fibre whose length can be suitable for secondary automatic spinning new end formation.

An externally-oriented internally-corrected perforating gun system and method for accurate perforation in a deviated wellbore is disclosed. The system / method includes a gun string assembly (GSA) deployed in a wellbore with an external protuberance member (EPM) and an internal pivot support (IPS). With the EPM oriented to the high side of the wellbore, the center of mass of the GSA positions the GSA at the lower side of the wellbore surface. The IPS is attached to internal gun components such end plate, charge holder tube, detonating cord or charge case. The charges inside the charge holder tube move with the gravitational vector about the IPS and point more accurately in the desired direction for perforating. The external orientation of the EPM along with limited internal swing about the IPS provide for an accurate orientation of the charges that results in efficient and effective perforating through a hydrocarbon formation.

A limited entry perforating phased gun system and method for accurate perforation in a deviated / horizontal wellbore is disclosed. The system / method includes a gun string assembly (GSA) deployed in a wellbore with shaped charge clusters. The charges are spaced and angled such that, when perforated, they intersect at a preferred fracturing plane. Upon fracturing, the fractures initiate at least principal stress location in a preferred fracturing plane perpendicular to the wellbore from an upward and downward location of the wellbore. Thereafter, the fractures connect radially about the wellbore in the preferred fracturing plane. The fracture treatment in the preferred fracturing plane creates minimal tortuosity paths for longer extension of fractures that enables efficient oil and gas flow rates during production.

The invention belongs to the field of machinery, and relates to a hydraulic drive, gas drive or solid flowing pressure drive device and equipment, particularly to a method for utilizing rolling friction to centralize a piston rod to do reciprocating motion and an actuating device for utilizing rolling friction to centralize the piston rod to do reciprocating motion through implementing the method. The actuating device comprises a piston rod, a cylinder body, a controlling piece and a centralizer, wherein the piston rod comprises a piston and a cylinder rod; the centralizer comprises a guiding rolling element and a guiding rolling element supporting piece; the guiding rolling element is arranged between the guiding rolling element supporting piece and the cylinder rod; the controlling piece controls flow of liquid, gas or solid; the piston drives the cylinder rod to do reciprocating motion; and the guiding rolling element fits the guiding rolling element supporting piece and the cylinder rod to rotate and centralizes the motion direction of the cylinder rod through the rolling friction.

The invention relates to a cotton textile and relative production, wherein it is characterized in that: its transverse line and longitudinal line use the cotton yarn mixed by cotton fiber and soluble vinylon fiber, while the mass between them is 70-85:15-30; and the production comprises: spinning the cotton yarn, warping, sizing, drying, spinning blank cloth, and following treatment. The inventive product is flexible, with wet adsorption, and high yield.

An electronic device includes a first body, a second body and a hinge structure. The hinge structure includes a shaft, a bracket, a torsion assembly and a first washer. The shaft is fixed to the first body. The bracket is fixed to the second body and rotatably connected to the shaft. The bracket includes two assembling portions fixed to each other. The torsion assembly is disposed on the shaft and provides torsion to the hinge structure. The first washer is fixed to the shaft and located between the two assembling portions. Two sides of the first washer contact the two assembling portions respectively to increase the torsion of the hinge structure through the frictional force between the first washer and the two assembling portions.

A limited entry perforating phased gun system and method for accurate perforation in a deviated / horizontal wellbore is disclosed. The system / method includes a gun string assembly (GSA) deployed in a wellbore with shaped charge clusters. The charges are spaced and angled such that, when perforated, they intersect at a preferred fracturing plane. Upon fracturing, the fractures initiate at least principal stress location in a preferred fracturing plane perpendicular to the wellbore from an upward and downward location of the wellbore. Thereafter, the fractures connect radially about the wellbore in the preferred fracturing plane. The fracture treatment in the preferred fracturing plane creates minimal tortuosity paths for longer extension of fractures that enables efficient oil and gas flow rates during production.

The invention provides a non-aqueous electrolyte battery which reduces the twisting of negative electrode or the peeling of the negative electrode layer from the current collector caused by volume changes on the occasion of charge / discharge reactions and enhancs the charge / discharge cycle characteristics. The non-aqueous electrolyte battery comprises a negative electrode comprising a current collector, and a negative electrode layer formed on one or both surfaces of the current collector, a positive electrode, and a separator interposed between the negative electrode and the positive electrode. The negative electrode layer comprises a plurality of layers laminated each other and containing a different active material each other, the layers comprising a first layer which is contacted with the current collector and contains spinel-type lithium titanate as an active material, and a second layer which is disposed to face the separator and contains Ramsdellite-type lithium titanate or anatase-type titanium oxide as an active material.

A limited entry perforating phased gun system and method for accurate perforation in a deviated / horizontal wellbore is disclosed. The system / method includes a gun string assembly (GSA) deployed in a wellbore with shaped charge clusters. The charges are spaced and angled such that, when perforated, they intersect at a preferred fracturing plane. Upon fracturing, the fractures initiate at least principal stress location in a preferred fracturing plane perpendicular to the wellbore from an upward and downward location of the wellbore. Thereafter, the fractures connect radially about the wellbore in the preferred fracturing plane. The fracture treatment in the preferred fracturing plane creates minimal tortuosity paths for longer extension of fractures that enables efficient oil and gas flow rates during production.

An improved mine roof bolt is disclosed. The mine roof bolt comprises a bolt portion having a camming nut rigidly fixed to it and a threaded end and an expansion shell having a central threaded nut with wedge fingers extending from it. The expansion shell is threaded onto the threaded section of the bolt. Turning the bolt while it is in a hole causes the expansion shell to move along the bolt and brings the wedge fingers into contact with the camming nut, spreading the wedge fingers into contact with the hole sides. As the turning of the bolt continues, the relative movement of the camming nut and wedge fingers increases the wedging effect within the hole until the bolt is anchored in the hole. While turning of the bolt may serve to mix a catalytic adhesive, the adhesive is not needed to activate the mechanical anchoring mechanism of the mine roof bolt.

A battery separator has performance enhancing additives or coatings, fillers with increased friability, increased ionic diffusion, decreased tortuosity, increased wettability, reduced oil content, reduced thickness, decreased electrical resistance, and / or increased porosity. The separator in a battery reduces the water loss, lowers acid stratification, lowers the voltage drop, and / or increases the CCA. The separators include or exhibit performance enhancing additives or coatings, increased porosity, increased void volume, amorphous silica, higher oil absorption silica, higher silanol group silica, reduced electrical resistance, a shish-kebab structure or morphology, a polyolefin microporous membrane containing particle-like filler in an amount of 40% or more by weight of the membrane and ultrahigh molecular weight polyethylene having shish-kebab formations and the average repetition periodicity of the kebab formation from 1 nm to 150 nm, decreased sheet thickness, decreased tortuosity, separators especially well-suited for enhanced flooded batteries.

A limited entry perforating phased gun system and method for accurate perforation in a deviated / horizontal wellbore is disclosed. The system / method includes a gun string assembly (GSA) deployed in a wellbore with shaped charge clusters. The charges are spaced and angled such that, when perforated, they intersect at a preferred fracturing plane. Upon fracturing, the fractures initiate at least principal stress location in a preferred fracturing plane perpendicular to the wellbore from an upward and downward location of the wellbore. Thereafter, the fractures connect radially about the wellbore in the preferred fracturing plane. The fracture treatment in the preferred fracturing plane creates minimal tortuosity paths for longer extension of fractures that enables efficient oil and gas flow rates during production.

The present invention discloses a plug, which matches a corresponding socket. The plug comprises a body, a shell, a plurality of terminals and a plurality of wires. The body has a first contact surface directing to the corresponding socket, a second contact surface corresponding to the first contact surface and a plurality of terminal channels formed between the first contact surface and the second contact surface. Each terminal has a connection end that extends from the second contact surface out of the terminal channel and is accepted by the shell. On one side of the shell, the wires connect to the shell and the connection direction is vertical to the first contact surface. A gold finger board, placed in the shell, has a plurality of leads, each lead having a soldering pad connecting to the corresponding terminal at one end and having a gold finger connecting to the corresponding wire at another end. The plug of present invention provides the advantages of avoiding twisting of the wire and saving space.

A handheld device has a first body part with a first user interface element and a second body part with a second user interface element, and a link mechanism configured to interconnect the first body part and the second body part movably by a user between a first configuration and a second configuration. The first body part and the second body part being stacked in a first order in the first configuration and in a second order opposite to the first order in the second configuration. Each body part has a user interface on its upper surface so that either one can be exposed to a user by changing between the first and second configurations.

A perforating gun comprising an elongated shaped scallop that is cut circumferentially in an outside surface of the perforating gun such that said scallop has a constant thickness portion and a variable thickness portion. The variable thickness portion is cut on either end of the constant thickness portion and an arcuate length of the constant thickness portion subtends an angle at a center of said perforating gun. The elongated shaped scallop aligns to shaped charges that are oriented along a desired perforating orientation in the perforating gun. During perforating, the shaped charges perforate through the elongated shaped scallop such that a burr created by the plural shaped charges does not substantially protrude past an outside diameter of the perforating gun.

The invention provides a spinning method of terylene-viscose blended yarn, which comprises the following steps: opening and cleaning cotton, combing the cotton, making ribbons, spinning coarse yarn and spinning fine yarn; while spinning the coarse yarn, feeding two pieces of coarse yarn in parallel into the same drawing mechanism of a spinning machine at 9-13 mm intervals so as to simultaneously draw the two pieces of coarse yarn in parallel. The method applies a Sirospun technology to the spinning of the terylene-viscose blended yarn. The two pieces of coarse yarn are simultaneously fed intothe spinning machine, the single yarn twist area is shorter, and the applied degree of twist is low, so that the included angle of the fiber spiral yarn and the yarn shaft in the single yarn is relatively small, and the single fiber in the single yarn can not transversely protrude out of the outer surface of the yarn due to the strong effect of the twisting force. Thus, the terylene-viscose blended yarn has the advantages of little filoplume, smooth surface, even yarn, high strength and few defects. The method enhances the quality grade of the terylene-viscose blended yarn.

An interbrace is provided for reducing torquing, twisting, and pivoting between a V-twin engine and a generally separate motorcycle transmission. A first embodiment of the interbrace includes a forward engine flange portion, a rearward transmission end cap portion which functions as a transmission end cap, and a connecting portion interconnecting the engine flange portion and the transmission end portion. A second embodiment of the interbrace includes a forward engine flange portion, a rearward transmission end plate flange portion, and a connecting portion interconnecting said engine flange portion and said transmission end plate flange portion.

The invention relates to a method for producing short fiber yarn (17) using a spinning centrifuge tank (3) working in two steps, a drafting device (9) for drafting a feed material (6), a An axially displaceable yarn guide tube (7) can be inserted into the spinning centrifuge tank (3) and a winding device (14) for winding the yarn into a cross-wound bobbin (15). The method according to the invention is implemented in such a way that before the end of the first spinning stage, the pretreated yarn end of a yarn (17) unwound from the cross-wound bobbin (15) is in the drafting device (15). The yarn is fed into the feeding material (6) before the pair of front rollers (10) in 9), and at the same time, a partially twisted yarn (11) in the first spinning stage is started to be spun, and the feeding material (6) is interrupted. Continue to input, change the running direction of the yarn, and the yarn enters the second spinning stage, that is, the partially twisted yarn (11) wound into the yarn cake (12) in the spinning centrifuge tank (3) is under supplementary twisting It is unwound from the centrifugal spinning pot (3) and wound onto the cross-wound bobbin (15).