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295 results about "Torsional load" patented technology

The torsional load is imposed on the sample by the rotational oscillation of the lower test die half. There's also the exceptional braking power of Buell's 375 mm zero torsional load (ZTL) inside-out disc with a six piston brake calliper which reduces weight but maximises power and rider feedback.

Combined in-plane shear and multi-axial tension or compression testing apparatus

An in-plane shear and multi-axial tension or compression testing apparatus having four-bar linkages pivotable to two sleeves on an opposite vertices with the sleeves of each vertex rotationally attached to each other. Lateral links of each linkage are pivotally attached to load transfer plates in which the plates secure a test specimen. Each linkage is rotatable to the other linkages while the vertices are subjected to a compression or tensile load. The vertices are also capable of rotation by a testing machine for shear testing. During compression or tension of the vertices of the apparatus, the plates respectfully move toward or away from each other thereby applying compression or tension to the specimen. The bars of one linkage can be rotated with respect to the other, thereby applying torsional loading to the specimen.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY

Closed-Loop Torque Phase Control for Shifting Automatic Transmission Gear Ratios Based on Friction Element Load Estimation

A closed loop shift control apparatus and method based on estimated torque in friction elements controls a torque transfer phase when shifting from a low gear configuration to a high gear configuration for an automatic transmission system. When pressure actuated friction elements are selectively engaged and released to establish torque flow paths in the transmission, estimates of torsional load exerted on the off-going friction element are used to predict the optimal off-going friction element release timing for achieving a consistent shift feel. The estimated torque is preferably calculated by using estimated torque signals generated as a function of speed measurements represented either the engine speed and turbine output speed or transmission output speed and wheel speed under dynamically changing conditions.
Owner:FORD GLOBAL TECH LLC

E-fixture

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.
Owner:THE BOEING CO

Multi-axial pedicle fixation assembly and method for use

An implantable orthopedic assembly comprises a bone fixator and head assembly for securing a stabilizing rod to the spine. The head assembly allows multi-axial repositioning of the bone fixator relative to the head assembly. A primary drive interface located on the bone fixator may be used to adjust the depth of bone penetration when the bone fixator and head assembly are substantially coaxial. A secondary drive interface located on the head assembly may be used to adjust the depth of bone penetration while independently adjusting the stabilizing rod position when the bone fixator and the head assembly are not coaxial, transferring torsional loads to the bone fixator.
Owner:ORTHOFIX US LLC

Torsion load controller for restraining torsional vibration of wind turbine generator and control method

The invention provides a torsion load controller for restraining the torsional vibration of a wind turbine generator and a control method. The controller takes torsion angular speed as feedback quantity; the torsion angular speed is a quantity related to the rotation speed and the accelerated speed of a wind wheel; the deviation between the rotate speed and the accelerated speed is subjected to a PI regulator and amplitude limiting, and then serves as controller output; the controller output is overlapped to the torque of a generator; parameters of the PI regulator in the torsion load controller are set; the target of the torsion angular speed during torsional vibration restraining is subjected to optimization design. The controller has high feasibility and applicability, and can quicken the maximum power tracking to a certain extent.
Owner:SHANGHAI JIAO TONG UNIV
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