1908 results about "Axial load" patented technology

A system for continuously circulating fluid to and through a tubular string either of coiled tubing or made up of a plurality of tubulars connected end-to-end while an upper tubular is added to or removed from a top tubular of the plurality of tubulars, all tubulars having a top-to-bottom fluid flow channel therethrough, the system having an upper chamber with a bottom opening, a top opening, and an upper sealing apparatus for sealingly encompassing a portion of the upper tubular, a lower chamber with a bottom opening, a top opening and a lower sealing apparatus for sealingly encompassing a portion of the top tubular, one of the upper chamber and the lower chamber sized for accommodating connection and disconnection therein of the upper tubular and the top tubular, and gate apparatus between and in fluid communication with the upper chamber and the lower chamber. Such a system may have apparatus for isolating a tubular therein from an axial load imposed by fluid pressure in a chamber; at least one of the lower chamber and the upper chamber with inner bushing apparatus with a portion thereof movably disposable within the chamber's sealing apparatus for facilitating movement of a tubular with respect to the chamber's sealing apparatus, and the system connectible to and rotatable by a rotating system for rotating the tubular string; and/or heave compensation interconnections for interconnecting the system to an offshore rig's heave compensation system. The system in certain aspects including fluid flow lines to each of the top and bottom chambers, a supply of fluid for circulating through the tubular string and through the upper and lower chambers, apparatus for continuously moving circulating fluid from the supply through the system into the tubular string.

Fiber optic connectors having an optical fiber stub that is fusion-spliced for optical connection and related tools for the fiber optic connectors are disclosed. Specifically, the connector assembly for fusion-splicing includes a fiber optic connector having an optic fiber stub and a boot attachable to the fiber optic connector. The boot is configured to transfer the majority of the axial force from the fiber optic cable to the fiber optic connector. Specifically, a splice housing for housing the fusion splice is configured for attachment to an end of the boot for transferring forces from the fiber optic cable to the boot. Consequently, the boot preferably has an extensibility of less than about 2 millimeters under an axial load of about fifteen pounds to inhibit excess forces from acting on the optical fiber stub.

A down hole flow control device used in a well bore includes a central mandrel and a packer ring disposed thereon. The packer ring is compressible along a longitudinal axis of the central mandrel to form a seal between the central mandrel and the well bore. Upper and lower slip rings are disposed on the central mandrel and include a plurality of slip segments joined together by fracture regions to form the slip rings. The fracture regions are configured to facilitate longitudinal fractures to break the slip rings into the plurality of slip segments that secure the down hole flow control device in the well bore. The upper and lower slip rings have different fracture regions from one another to induce sequential fracturing with respect to the upper and lower slip rings when an axial load is applied to both the upper slip ring and the lower slip ring.

A gas turbine engine mid turbine frame having an inner case supporting at least one bearing and at least three spokes extending radially outwardly to an outer case, the mid turbine frame having an interturbine duct extending through the mid turbine frame, the interturbine duct spaced axially closer to an upstream turbine disc than a bearing supporting structure of the mid turbine frame and mounted axially slidingly relative to the bearing supporting structure to substantially isolate the bearing supporting structure from axial loads, for example such as disc loads incurred in the unlikely event a turbine disc shaft shears within the engine.

A linear actuator has two half-shells, a motor housing, a motor installed in the motor housing, a guiding screw driven by the motor, a screw nut engaged with the guiding screw, an interior tube encircling the guiding screw and connected with the screw nut at one end thereof, a moveable exterior tube telescoping the interior tube therein, at least two ball bearings subject to radial and axial load, and fitting seat installed in the half-shells. The fitting seat has to bearing seats for mounting the ball bearings, such that the load capacity of the linear actuator is increased, while the application safety is enhanced.

A shock-absorber subassembly for a subsurface drilling assembly is disclosed. The shock-absorber subassembly comprises a mandrel, a body assembly, and at least one torsional spring assembly. The mandrel has a bore extending therethrough and has one end connectable to a portion of the subsurface drilling assembly. The body assembly has a bore extending therethrough and one end connectable to another portion of the subsurface drilling assembly. The body assembly is coupled to the mandrel to establish fluid communication between the bore of the mandrel and the bore of the body assembly and to permit planar rotational movement of the mandrel relative to the body assembly. The at least one torsional spring assembly engages the mandrel and the body assembly to absorb torsional shocks and vibrations between the mandrel and the body assembly and to limit the degree of planar rotation between the mandrel and the body assembly. In a second embodiment, the body assembly is coupled to the mandrel to permit axial movement as well as planar rotational movement. In this second embodiment, the shock-absorber subassembly further comprises at least one axial spring assembly engaging the mandrel and the body assembly to absorb axial shocks and vibrations between the mandrel and the body assembly.

A stabilizing support for opening- and closing-wedge osteotomies, constituted by a plate for connecting, by screws, two bone portions formed by an osteotomy rima; the plate comprises fixing means that are adapted to be inserted and fixed in each one of the portions in order to lock the portions in a preset configuration, so as to support an axial load that bears on the bone.

The invention discloses a direct driving type precise rotating table which comprises a working table (30) and a torque motor, wherein the torque motor comprises a motor shell (8), a main shaft (2), a stator (6) and a rotor (7), the motor shell (8) is fixedly connected with the stator (6) to form a static part, the main shaft (2) is fixedly connected with the rotor (7) to form a rotating part, and the working table (30) is directly and fixedly connected with the main shaft (2) of the torque motor. Furthermore, a circular arc crossing roller bearing (1) is arranged between the motor shell (8) and the main shaft (2) and comprises an inner ring (21), two outer rings (22) and a plurality of circular arc rollers (23) arranged among of the inner ring (21) and the outer rings (22), and the circular arc rollers (23) are sequentially crossed in an angle of 90 DEG. The invention has high radial and axial load capacity, good rigidity and high motion precision and stability, and can meet the integrated requirements of serving as a high-precision digital control rotating table.

A nonrigid connection apparatus includes a frame-side member securable to a steel structural frame, a brace-side member securable to a seismic brace, and a coupling element that nonrigidly secures the frame-side and brace-side members to each other. By way of example, the nonrigid connection element may provide a hinge-type connection, which substantially isolates a seismic brace from nonaxial loads. As another example, the nonrigid connection element may be a ball-and-socket type connection, which substantially isolates a seismic brace from nonaxial loads and absorbs any shear and moment applied thereto when the seismic brace drifts out of an intended plane of the steel structural frame. The nonrigid connection element may also include a collar to stabilize the brace-side member and prevent shears and moments from causing the same to buckle in an unintended direction. Methods of installing and using the nonrigid connection apparatus are also disclosed.

A gear bearing drive provides a compact mechanism that operates as an actuator providing torque and as a joint providing support. The drive includes a gear arrangement integrating an external rotor DC motor within a sun gear. Locking surfaces maintain the components of the drive in alignment and provide support for axial loads and moments. The gear bearing drive has a variety of applications, including as a joint in robotic arms and prosthetic limbs.

The present disclosure generally relates to a combined multi-coupler for a top drive. In one embodiment, a combined multi-coupler including a first tubular member having a first axial load profile, a first torque profile, and a first junction member, and a second tubular member having a second axial load profile, a second torque profile, and a second junction member. The engagement of the first tubular member to the second tubular member forms connections between the first and second axial load profiles, the first and second torque profiles, and the first and second junction members.

A comprehensive test experiment device for dynamic and static properties of a rolling bearing-main shaft system comprises a main shaft in which the front end is installed on a front end bearing support saddle; the end surface of the front end bearing support saddle is provided with three laser displacement sensor test probes; the front end bearing support saddle is internally provided with an experiment bearing; load is carried out through a radial load hydraulic tank and an axial load hydraulic tank; the back end of the main shaft is assembled on a back end bearing support saddle, and the back end bearing support saddle is configured to be paired angle contact bearings, and both an integrated monitoring ring and a pre-tightening push block are installed between the angle contact bearings to realize self-adapting pre-tightening of the bearing; the main shaft is provided with an eccentric quality shock excitation disk for applying bearing shock excitation; and the main shaft is driven by a variable-frequency electric motor. The comprehensive test experiment device for dynamic and static properties of a rolling bearing-main shaft system is used for detecting the influence on the dynamic and static properties of multiple types of bearings and the main shaft system, thereby overcoming the defect that the existing rolling bearing-main shaft experiment platform has the characteristics of single-type tested bearing, too low integration degree and rough single processing, being capable of carrying multiple experimental researches, and improving the flexibility of the rolling bearing-main shaft experiment platform.

Insulated vacuum switchgear and active switchgear elements therefor are provided with a rigid support structure mechanically isolating a vacuum insulator from axial loads in use without reinforcing or insulating encapsulations. At least one of the elastomeric insulating housing and the support structure directly contacts an outer surface of the insulator. Systems and methods for assembling the switchgear are also provided.

A steering column assembly includes a first jacket defining a first bore and a second jacket defining a second bore aligned with the first bore prior to collapse of the first jacket and the second jacket. A jacket connector extends through the bores to interconnect the first jacket and the second jacket. The jacket connector includes a pre-determined shear resistance, above which the jacket connector is sheared to permit telescopic movement between the first jacket and the second jacket. Accordingly, in response to an axial load greater than the pre-determined shear resistance of the jacket connector being applied to one of the first jacket and the second jacket, the jacket connector shears, permitting the telescopic movement. The jacket connector includes a pin defining a pin bore. The pin bore defines a cross sectional area, with the pre-determined shear resistance depending upon the cross sectional area of the pin bore.

The invention discloses a pressing-twisting multi-shaft loading testing machine. The pressing-twisting multi-shaft loading testing machine comprises a machine frame, a sample pressure chamber, an axial pressure controller, a confining pressure controller and an oil source system, wherein the sample pressure chamber is arranged on the machine frame and is used for accommodating samples therein; the axial pressure controller is used for applying axial loads to the samples in the sample pressure chamber; the confining pressure controller is used for applying confining pressure loads to the samples in the sample pressure chamber; the oil source control system is used for controlling the axial pressure controller and the confining pressure controller respectively to apply different paths of loads; and the axial pressure controller and the confining pressure controller are configured in a mode that the axial force is coupled with the confining force when the loading of the samples in the sample pressure chamber is buffered. The pressing-twisting multi-shaft loading testing machine can integrate complicated loading such as pressing-twisting combination, plane strain, true triaxiality and the like and is suitable for the tests of static power units of the common coarse-grained soil and ideal soil simulation materials during engineering construction.

A device and a method are disclosed for testing a curved panel assembly, which simulates a segment of an aircraft fuselage barrel section, subjected to combined loading. The device includes an axial load head assembly attached to the test panel assembly via one axial load fitting and configured to apply an axial load to the test panel assembly, and an axial-torsion reaction box connected to the axial load head assembly via linear journal bearing assemblies, where the axial-torsion reaction box is configured to be rotated by a pair of torsional loading systems to apply a torsional load to the test panel assembly. The device also includes a gore section attached to hoop load fittings of the test panel assembly, configured to provide degrees of freedom that constrain the test panel assembly to load and deflect as it would naturally in an actual fuselage barrel, form a plenum box to apply an internal pressure load, and provide hoop loading systems that complete the full hoop load application to the test panel assembly. A fixed reaction box attached to the test panel assembly via another axial load fitting rigidly attaches the test panel to the self-reacting frame, completing the internal load path of the overall system.

A crush member for a vehicle having frame rails comprising a tube having a first end configured to be connected to the frame rails of the vehicle and a second end configured to be connected to a bumper. The tube has a constant thickness from the first end to the second end. The tube further has a taper along a axial direction from the first end to the second end, the tube having a larger cross section at the first end and a smaller cross section at the second end. The tube is configured to crush to absorb impact energy upon an axial or near axial load.

A closure or stopper for a container to contain liquid, powder or paste, the container having means to define a first extremely flat annular surface, the closure comprising a sealing member defining a second extremely flat surface, an annular groove that locates an O-ring, and means such as thread to urge the extremely flat surfaces into parallel abutting contact, the extremely flat surfaces adapted to form a surface tension seal when they are urged into parallel abutting contact and means to prevent lateral or shear relative movement. Another form of the closure is the sealing member being a disc that seats on the flat annular sealing surface defined by the top of the neck of a bottle to form a seal, and a metal cap to place the seal under axial load and protects the seal from vibration.

The invention relates to a high-speed dynamic simulation test method used for an electric mainshaft bearing. The electric mainshaft bearing comprises a frame, a main body pedestal, an axial loading cylinder, a test head assembly, a main body gland, a radial loading cylinder, a shaft coupling, a protecting hood, an electric mainshaft, a lubricating oil pipe, an axial loading oil pipe, a vibration sensor, a radial loading oil pipe and a temperature sensor and also a final assembly of all the parts. A hydraulic loading system is started to provide pressure oil to the axial loading cylinder and the radial loading cylinder, the electric mainshaft drives a test mainshaft to rotate, the radial loading cylinder exerts radial force on a first test accompanying bearing and a second test accompanying bearing through a radial loading sleeve, and the radial loading cylinder exerts axial force on a first test bearing and a second test bearing through an axial loading sleeve. The entire test is controlled by a computer to display parameters of the rotating speed, the axial load and the radial load, the oil pressure, the cooling water temperature, the bearing temperature, the bearing vibration, the power current of the electric mainshaft and the test time, and the parameters are saved in a computer database and analyzed.

An apparatus measures a supporting force of ferroconcrete piles by means of a bi-directional front end oil pressure loading apparatus using a high pressure loading system capable of measuring a supporting force, a sinking amount and an axis load distribution on the ferroconcrete piles. The apparatus comprises: a steel plate having a predetermined thickness and diameter and including upper and lower discs having penetration holes through which concrete passes; a fixing member for separating the discs from each other by a predetermined distance; a high oil pressure cylinder for producing an oil pressure force; an oil cylinder inflation displacement measuring sensor for measuring a displacement; an upper displacement measuring rod coupled to the upper disc for measuring a displacement of the upper disc; a lower displacement measuring rod coupled to the upper disc for measuring a displacement of the lower disc; an axis load transition measuring instrument including a tremie induction tube coupled to the upper disc for guiding concrete to the penetration holes; iron elements coupled to the upper disc; a load sensor for measuring ground abrasion; and a sensor line for transferring a signal and current to the load sensor. A corresponding method is disclosed.