1146 results about "Bending force" patented technology

A double shouldered high torque resistance threaded connection for drill stem components having enhanced resistance to torque forces, tensile loads and material stress and fatigue is disclosed. The tool joint is provided with threads having a 75 DEG included angle between the thread flanks thereof and with generally elliptical root surfaces to minimize material stress and fatigue during operation under high torque and high tensile loads. When made up, the double intrerengaging shoulders of the threaded tool joint are in firm face to face engagement permitting torque forces and tensile loads to propagate through the tool joint in a manner that minimizes bending forces and minimizes high stress concentration so that the resulting service life of the tool joint is significantly enhanced.

A medical device includes a catheter and a stent mounted on the catheter, the stent having a hollow, cylindrical body made with a plurality of rings. The rings each extend circumferentially around the cylindrical body and include an undulating series of peaks and valleys. The rings are joined together by a series of links which are shaped and arranged to promote longitudinal flexibility as the stent is delivered on the catheter and effective scaffolding after deployment. In one aspect of the invention, the rings are provided with inflection points on some portions of the rings which extend in a generally circumferential direction for a short distance. A link is joined at one end at the inflection point on one ring and also joined at a second end at a second inflection point on an adjacent ring. This construction allows the crimped stent to flex longitudinally when it is subjected to bending forces such as those encountered during delivery of the stent and catheter through a tortuous coronary artery.

A wing load alleviation system and method for alleviating the lift-inducing structural-bending force (i.e., moment) experienced by each of the wings of an aircraft. The apparatus includes a deployable panel and an actuator mounted in each wing. The actuators are responsive to a command generator. The actuator is mounted inside the wing and the panel is mounted flush with an outer surface of its respective wing. Each panel can be moved between a retracted position, where it has no affect on airflow moving over the wing, to a deployed position in which it deflects air off of the wing. Each panel is preferably located at a span-wise location at least about halfway along the length of the wing toward the wing tip, and more preferably at least in part outboardly of the outboard-most trailing edge device in the wing. The apparatus effectively shifts the lift-inducing structural-bending forces experienced by the wing more inboard towards the fuselage.

An adjustable socket system, method, and kit for use with prosthetic devices or orthotic, orthopedic, or exoskeletal support devices that includes a paddle and a compressing device coupled to the paddle. The paddle is chosen from a plurality of paddles of different shapes in such a way that the paddle inner surface is substantially coextensive with a soft tissue area overlying skeletal structures. The compressing device presses the paddle against the soft tissue area in order to minimize the motion of the paddle relative to the underlying skeletal structures without causing discomfort to the user or compressing areas not in contact with the paddle, allowing compressed tissue to flow into uncompressed areas. The system, method, and kit can include an external tool, sensors, actuators, and controllers, to assist fitting and for adjustment after fitting. A stabilizer can be added to resist the bending force on the paddle.

The needle assembly comprises a needle including an elongated tubular needle body having open distal and proximal ends, and an elongated stylet having a solid shank complementary to the tubular needle body and slidably movable therewithin substantially coaxially thereto. The needle body includes a tip portion defining the distal end and a main portion defining the proximal end. Moreover, the tip portion bendable relative to the main portion. In turn, the stylet shank has a solid distal end. Furthermore, at least one of the distal end of the needle body and the distal end of the stylet shank is beveled at an angle to a longitudinal axis of corresponding one of the needle body and the stylet shank. The beveled distal end exerts a bending force to the tip portion of the needle body against the beveled face during advancement of the needle body through a human tissue.

An endoscope for visualizing and operating upon a surgical site within a human body employs an elongated tubular body adapted to be inserted through bodily passages so that the distal end is adjacent the surgical site. The body has a flexible section, at least proximal to the distal end, and manually adjustable bending controls at the proximal end may be manipulated to impose bending forces on the distal end to steer the distal end to the surgical site. A fluid turbine supported for rotation adjacent the distal end is powered by fluids pumped through a passage so as to rotate the turbine. The various cutters and debriding tools may be attached to the distal ends so that they are rotated by the turbine.

An apparatus for connecting a first and a second section of tubing is provided. It comprise a body having a bore therethrough, a first end, a stiff section, and an exterior surface adapted for connection to the first and second sections of tubing. A first tapered section may be provided on the first end of the body, and the first end of the body may be adapted to be disposed within the first section of coiled tubing. A second tapered section may be provided on the second end of the body, and the second end of the body may be adapted to be disposed within the second section of coiled tubing. The first and second tapered sections may be provided with outer and inner tapered surfaces. By connecting two coiled tubings using a connector as disclosed herein, the result is cost savings through an improved joint between two coiled tubings that will withstand bending forces applied proximate the joint in a manner believed to be superior to joints formed by previous coiled tubing connectors. Related methods are also provided.

A wake absorber, wherein an aquatic vehicle with a propulsor mounted on the vehicle and operative to propel the vehicle through a water medium, has a wake absorber mounted on the vehicle aft of the propulsor. The wake absorber includes an artificial muscle surface adapted to be impinged upon by a wake created by the propulsor. The wake absorber further includes electrodes mounted on the artificial muscle surface. Pressure of the wake upon the muscle surface exercises a bending force on the surface, which creates energy that is recovered by the electrodes as electrical power that can be digitized. Energy removed from the muscle surface by the electrodes weakens the wake and renders the wake less pronounced visually and acoustically.

The invention relates to a flexible tube device, which is repeatedly reshapable by action of reshaping forces comprising bending forces and which has the capability of substantially maintaining its shape received by the reshaping as the forces are released. This device is characterized in that the device (1) comprises a flexible part comprising a flexible inner hose (3) and/or a flexible outer hose, which may surround the flexible inner hose (3) and be provided along substantially the entire flexible part and preferably inside the outer hose, outside the inner hose or between the outer hose and the inner hose, a bend stiffening member (4) which is plastically deformable at the reshaping of the tube device and which after the removal of the reshaping forces substantially retains the shape received by the plastic deformation and thereby substantially determines the shape of the tube device.

An integrated control method for the shape of medium-thin plate in conticasting and tandem rolling includes finishing shape setting control model, automatic thickness control AGC, the affection of laminar flow cooling to plate shape, and use of new roller technique. The roller bending force and the positions of serial rollers are set up and regulated by plate shape controlling model, which consists of presetting control model, dynamic control model and plate shape and thickness decoupling model.

A bracket and tension rod device is mounted to a top-drive dolly to carry the weight of a sheave wheel assembly. The device is deployed by connecting the sheave wheel assembly to a rigid dolly arm with an adjustable tension rod to relieve a gooseneck from adverse tensile, compressive and bending forces from the movement of a wireline through the sheave assembly.

A one-piece cable support having a box-shaped mounting assembly. The box-shaped mounting assembly extends over a cable tray portion of the cable support and includes several optional mounting apertures. Once secured to a building structure through the box-shaped assembly, the weight of a suspended bundle of cables is distributed evenly below the box-shaped assembly, thereby permitting the load to be balanced evenly below the assembly and reducing the bending moment and therefore the stress on the wall portion connecting the cable tray and mounting assembly portions of the support. A bracket assembly is provided on the bottom of the cable support to allow easy ganging of multiple cable supports without the need for specialized brackets. Stiffeners are included on the cable support to improve the withstanding of bending forces. A cable retaining arrangement secures cable bundles within the support.

The invention relates to a high-precision strip shape control prediction method for a CVC (continuously variable crown) four-roll cold rolling mill. The high-precision strip shape control prediction method includes the steps: (1) building a strip shape prediction model for the CVC four-roll cold rolling mill; (2) determining parameters of the strip shape prediction model by means of regression; and (3) predicting a crown regulating domain of the CVC four-roll cold rolling mill in an online and real-time manner according to the regulating range of strip steel widths, roll radiuses, roll bending force and traversing positions under the condition of determined rolling force based on the strip shape prediction model. By the aid of the technical scheme, the strip shape prediction model is built, the secondary crown and the quaternary crown of a bearing roll gap can be accurately predicted, and the strip shape regulating capability of the rolling mill can be predicted in an online manner based on the strip shape prediction model. Besides, preset values of the roll bending force and roll shifting of the CVC four-roll cold rolling mill can be optimized, so that double waves or middle waves in a secondary wave form and edge and middle composite waves in a quaternary wave form can be effectively controlled, and the yield of a strip is improved.

A torque-indicating wrench includes a wrench body with a head to engage and turn a workpiece, and a stem having an inner peripheral wall with longitudinal and transverse wall segments. A strainable body made of a material with an elasticity modulus smaller than that of the stem has an outer peripheral wall which includes front and rear bending force transmitting areas in engagement with and stretchable relative to the front and rear regions of the longitudinal wall segments, and two gage carrying regions and front and rear end regions that are spaced apart from the longitudinal and transverse wall segments, respectively. A strain gage unit is attached to one of the gage carrying regions to detect change in resistance values corresponding to stretching deformation of the strainable body for processing by a processing circuit so as to obtain a value of torque applied to the workpiece.

A goggle is provided that can comprise a goggle frame and a bend control component. The goggle frame can define opposing lateral portions and a central portion. The goggle frame can comprise a bridge disposed at the central portion of the goggle frame. The goggle frame can be generally flexible upon exertion of a bending force on the goggle frame. The bend control component can extend along the bridge of the goggle frame. The bend control component can be configured to enhance flexural strength of the goggle at a bridge thereof for reducing preferential bending of the goggle frame at the bridge. In some embodiments, the bend control component is formed separately from the goggle frame. In other embodiments, the bend control component can be secured to the frame using fasteners and/or one or more protrusions and corresponding recesses.

The invention relates to a slight center wave strip-shape control method of hot-rolled strip steel. The method comprises the following steps: firstly, choosing a strip-shape feedback control frame; utilizing the adjusting manner of upstream frames, namely, adjusting the roll bending forces of the frames F2-F4 to realize the targeted slight center waves at a precision rolled outlet; secondly, controlling and adjusting the roll bending forces; detecting the flatness of the strip steel in real time by a strip-shape instrument and comparing it with a target value; if the deviation exists, adjusting the roll bending forces of the frames F2-F4. The slight center wave strip-shape control method of hot-rolled strip steel is applicable to overcoming strip-shape problems caused by the stages such as cooling and thermal treatment after hot rolling; the strip-shape quality of martensitic stainless steel strips is improved greatly and the scratching on the surface strip-shape in follow-up pickling and continuous annealing production is solved.

This invention relates in general to a bioabsorbable surgical tissue fixation implant (nail) and, more particularly to an implant for the fixation of soft tissue to bone. In one embodiment of the invention, the fixation implant generally includes at least one shaft configured to securely fit into a hole formed in bone. The shaft is of sufficient length relative to the interior diameter of the hole and, in some preferred embodiments, has locking protuberances, like threads, ridges, or barbs, that resist removal of the shaft from the hole in the bone when different types of forces, such as tensile or bending forces, are applied to the implant. The shaft is generally cylindrical in shape, however, in various embodiments of the invention, different cross-sections could be used. In a preferred embodiment of the present invention, the implant has a flattened and bent end portion emerging from only one side of the shaft. At the other side of the implant the outer surface of the shaft and the emerging end portion form a smooth surface, without any projections. This smooth surface at the end of the implant prevents irritation of the surrounding tissue. The end portion has a mating surface configured to grip a portion of the soft tissue surrounding the hole between the bone and the mating surface. The longitudinal axis of the shaft is oriented at an angle of less than 90 degrees relative to the mating surface. In this fashion, the implant anchors soft tissue, such as rotator cuff tissue, to bone.