Method and apparatus for suppressing cable dynamics in a device towed in water. The apparatus includes at least one section for suppression of motion, wherein the at least one section includes an axial motion suppression section; and the axial motion suppression section comprising equipment for the attenuation of axial vibrations in an electro-mechanical cable. The equipment is configured to produce a digressive stiffness curve.

A compression rod engagement apparatus is provided that includes an engagement feature, an engagement feature pin, and a mounting member. The engagement feature is attached to the engagement feature pin. The engagement feature pin is engaged with the mounting member in a home position and axial travel of the engagement feature pin along a lengthwise axis away from the home position in either axial direction is resisted by at least one spring force.

A vehicle body reinforcement device includes a housing including a first retaining portion and a second retaining portion each disposed at an inner portion of the housing, the inner portions that are spaced apart from each other by a predetermined distance in the axial direction, a first shaft member, a second shaft member, a first biasing member, a second biasing member, and a pressing member supported on the first shaft member so as to be movable in a direction orthogonal to an axis of the first shaft member within the housing and to be contactable with an inner surface of the housing, the pressing member pressing the inner surface of the housing.

One embodiment describes a bearing damper including a housing; a damper with an annular gap and an internal spring, in which the annular gap is formed between an inner rim and an outer rim of the damper, the internal spring circumferentially bounds the annular gap, the outer rim is coupled to the housing, and the annular gap is configured to be filled with fluid used to dampen vibrations produced on a drive shaft; and an external spring coupled to the housing and to the inner rim, in which the external includes an axial stiffness engineered to externally offset axial forces exerted on the inner rim of the and a radial stiffness engineered to externally offset a first portion of radial forces exerted on the inner rim and to permit a second portion of the radial forces to propagate the vibrations from the drive shaft to the inner rim.

A variable damping assembly includes a base, a supporting member, a damping member, and an elastic member. The supporting member is positioned on the base. The damping member is rotatably coupled to the supporting member and presses against the housing. The elastic member includes a first end and a second end opposite to the first end. The first end of the elastic member is coupled to the supporting member and the second end of the elastic member is coupled to the housing. The elastic member provides an elastic force and the damping member provides a damping force changed as the elastic force changes.

A seismic isolation assembly is defined by a first support plate and a second support plate disposed in parallel relation with a spacing being provided between the support plates. The first support plate is connected to ground and the second support plate is attached to a structure to be isolated. A set of wire rope isolators are disposed between the first and second support plates as well as at least one linear damper that is angularly disposed and mounted between the first and second support plates.

Various systems are provided for damping vibration in a mobile radiographic imaging system. In one embodiment, a vibration damping assembly for a C-arm imaging system comprises a pivot element rotatably coupled to a toe portion of the C-arm imaging system and configured to form an interface between the toe portion, a damping element, and a ground surface on which the C-arm imaging system sits.

The present invention provides a vibration mitigation device which includes a vertically extending housing and a reciprocating assembly coupled with and fully enclosed inside of the vertically extending housing. In accordance with an exemplary embodiment of the present invention, the vibration mitigation device may utilize a tension spring as the biasing member while operating in a pneumatic process, an eddy current dampening process or a hybrid combination of the two dampening processes. For low amplitude, the eddy current dampening process may provide improved vibration mitigation results and for higher amplitudes, the pneumatic process may provide improved vibration mitigation results. Other exemplary embodiments include a vibration damping element that utilizes a compression spring as a biasing member for mitigating vibrations. Further exemplary embodiments provide a vibration damping element that utilizes a compression spring and a tension spring as biasing members for mitigating vibrations.

Adhesive damping systems are described. A damping system for reducing the effects on a substrate caused by a disruption in the substrate environment includes an adhesive having a plurality of three-dimensional nanoparticles dispersed therein. The nanoparticles are configured to provide a controlled response to an applied force field. The system further includes a sensor which measures an amplitude and frequency spectrum of the disruption. In a use configuration, the sensor determines the amplitude and frequency spectrum of the disruption received by the substrate; and the applied force field is dependent on the amplitude and frequency spectrum of the disruption.

The invention is a system for controlling the relative movement of a load P, comprising at least one main damper having a longitudinal action of stroke C and two ends with one end being connected to a frame and the other being connected to the load. A compensation device is included having at least one secondary damper of longitudinal action with two ends with one end being secured to the frame and the other end is connected to the end of the main damper connected to the load The secondary damper is arranged so that, at one point of stroke C, the secondary damper has an action orthogonal in direction to the direction of the movement.