51results about How to "Effective dampening" patented technology

A drill collar primarily for use with measurement-while-drilling and logging-while-drilling sensors, the drill collar composed of a non-magnetic nickel alloy, and having three or four elongate nitral elastomer ribs parallel the longitudinal axis and mounted on the inner surface of the drill collar, defining a central aperture for receiving the down-hole sensor and inter-rib apertures for receiving drilling fluid. This novel drill collar is especially useful in rough or underbalanced drilling applications, protecting the sensor and enhancing measurement accuracy by dampening flow-based harmonic vibrations, absorbing vibration from lateral tool movement, and stabilizing/centralizing the sensor within the central aperture. Also, the novel drill collar allows the operator to run lower fluid rates while drilling, minimizing formation damage from fluid invasion.

An adaptive arm support provides motion of an armrest within a plane through any direction of translation. A number of vertical rods and bearings permit at least two links to pivot with respect to each other, permitting translation in any direction while staying within the plane. Bushing-tipped set screws are provided which dampen movement, to reduce or eliminate the effects of unintentional tremors. The armrest includes a swivel mounting which is also damped, which permits the longitudinal axis of the armrest to swivel from horizontal orientation to inclined angles which are out of the plane of translation. An elbow pad is provided which also pivots from perpendicular to the armrest longitudinal axis to different angular orientation with respect thereto.

An outsole, especially for sports shoes, that can be formed with a large amount of elastic deformability even in the tangential direction towards the front and the back, enabling a good cushioning effect even when the tread of the foot is inclined and somewhat slipping. Beyond at least one critical deformation in the deformed region, the sole remains essentially rigid in relation to tangential deformation. In this way, the runner has a secure footing on the respective tread point. The runner can push off from the tread point without losing ground and a swimming effect on the sole is prevented. The elastic deformability of the sole also in the tangential direction is caused by at least one first element, and the rigidity of the sole in relation to tangential deformation beyond the at least one critical deformation, in addition to the degree of the at least one critical deformation in the deformed region is due to at least one second element. So that the first and second elements can be independently designed, dimensioned and produced, there are extensive structuring, formation and variation possibilities. Certain areas in the heel and/or the ball region of the sole can be varied by the at least one first element, and certain areas by the at least one second element, in the longitudinal direction.

The present invention is directed to an adjustable trailer hitch that provides a suspended connection between a tow vehicle and an attached trailer. The hitch includes a support member that is adapted to be attached to a tow vehicle and a frame having first and second pivots for pivotally support a hitch plate, which is operative to connect to a trailer (e.g., engage a trailer pin). A first air spring has a first end fixedly connected to the support member and a second end fixedly connected to the frame. The air spring permits relative movement between the support member and the frame as well as transmitting towing forces therebetween. The air spring provides a pliable connection that at least partially mechanically isolates the trailer and the vehicle from each other. Instead of acting as a single unit, the vehicle and the trailer act at least partially independently of each other.

In a directional speaker control system for realizing good sound localization by correcting the directivity of a directional speaker, adapted to an audio surround system in which a desired sound is reflected on a wall surface or a sound reflection board so as to produce a virtual speaker, a first directional speaker emits a first sound toward the wall surface or sound reflection board so that the reflected sound reaches a prescribed listening position, and a second directional speaker emits a second sound, which comes to have an inverse phase with respect to an audio element of the first sound reaching the listening position directly, toward the listening position. Thus, it is possible to adequately dampen the audio element (particularly, low-frequency components) emitted directly toward the listening position from the first directional speaker; hence, it is possible to realize good sound localization.

A sheet restrainer is used to restrain movement of continuously traveling glass sheet and includes arms on either side of the glass sheet. A driving device coupled to the arms moves the arms from a retracted position in which the arms are withdrawn from the glass sheet to an engaged position in which the arms are near the glass sheet and in alignment with each other. Rollers are connected to the arms and contact the glass sheet in the engaged position. A damping device applies an adjustable damping force to at least one of the arms dampening movement of the arm in the engaged position thereby restraining movement of the sheet. In a method of operation, the damping devices restrain angular and/or lateral movement of the sheet by transmitting movement of the sheet against the rollers into a resistive damping force of the damping devices.

A golf club head having a cavity back design with a cavity therein for placement of lightweight dual-durometer silicone. The club head is prepared by brushing an adhesive onto the interior wall, but omitting a pre-selected area of the wall to allow silicone to shrink away at the omitted area to allow for control of the shrinkage. A first shot of 80 Shore A silicone is placed into the cavity and disposed against the interior wall. Next, a softer 50 Shore A silicone is juxtaposed against the first shot of silicone and it is pressed using a hot mold finishing tool wherein a substantial portion of the cavity is filled. A polycarbonate insert is attached to an outer surface of the second silicone to provide a zero gap appearance. A tan delta ratio of the first silicone to the second silicone is greater than 1.6. A storage modulus of the first silicone is at least three times greater than the second silicone. And, a loss modulus of the first silicone is at least ten times the second silicone.

An electrical converter is interconnected via a filter with an electrical load or an electrical power source. A method for controlling the converter comprises the steps of: receiving a reference flux (ψ*_i) for the electrical converter; determining output signals (y) comprising currents and/or voltages measured in the filter; determining an estimated flux (ψ_i) from the output signals (y); determining a corrective flux (ψ_i,damp) from the output signals (y) based on a mathematical model of the filter and a quadratic cost function; determining control input signals (u) for the electrical converter based on a sum of the estimated flux (ψ_i) and the corrective flux (ψ_i,damp); controlling the converter with the control input signals (u); and algorithmic filtering of at least one of the output signals (y) by applying a signal filter to the at least one output signal, which is designed for amplifying the at least one output signal at a resonance frequency of the filter, whereby the corrective flux (ψ_i,damp) is determined from the filtered output signals.

The present invention refers to a method for controlling an electronically adjustable steering damper in a two-wheeled vehicle or motor vehicle, and to an apparatus implementing it, in which the steering damper is able to exert a damping torque on a steering assembly (45) of the two-wheeled vehicle (40) that can be adjusted according to a steering speed (s_{{dot over (δ)}}). The control method comprises the steps that consist of determining at least one controlled variable (s_{{dot over (ψ)}}, s_{{dot over (δ)}}) of the two-wheeled vehicle (40) and calculating an instantaneous damping coefficient (c_in(t)) of the electronically adjustable steering damper based on the at least one controlled variable (s_{{dot over (ψ)}}, s_{{dot over (δ)}}) and is characterized in that the at least one controlled variable comprises a yaw rate (s_{{dot over (ψ)}}) of the two-wheeled vehicle. Correspondingly, the control apparatus comprises processing means connected to at least one measuring means of at least one controlled variable (s_{{dot over (ψ)}}, s_{{dot over (δ)}}), the processing means being suitable for calculating an instantaneous damping coefficient value (c_in(t) of the steering damper and is characterized in that at least one measuring means comprises a means for measuring a yaw rate (s_{{dot over (ψ)}}) of the two-wheeled vehicle (40) and/or a means for measuring a steering angle (s_{{dot over (δ)}}).

A shaft arrangement is disclosed for transmitting torques acting around a rotational axis, with a variably adjustable torsional stiffness acting around the rotational axis and a method for varying the torsional stiffness of a shaft arrangement. The invention includes a first shaft section, having at least one torsion element secured thereto which is not damaged by torque and is axially fixed manner, which is mounted to be dimensionally stable transverse to the rotational axis, a second shaft section spaced axially apart from the first shaft section, to which the at least one torsion element is secured which is not rotatable but is axially movable and that a means for operatively interacts or can be made to operatively interact with the second shaft section for axially moving the second shaft section in relation to the first shaft section and in relation to the at least one torsion element.

The invention refers to swing dampers, in particular to the swing dampers having disc brakes. A Swing damper (1) for damping work elements, comprising an upper part (2) having at least two lugs (4) and a lower part (3) having at least two lugs (5), where brake discs (6a, 6b; 7a, 7b) are arranged between the lugs 4 of the upper part 2 and the lugs 5 of the lower part 3. The Swing damper (1) characterized in that a tensioning element (10) and associated control means (30) are provided in the cut-out “a” formed between the two lugs (4) of the upper part (2), providing a pressing of the brake discs (6a, 6b; 7a, 7b) and therefore damping a swing.

A silencer for an auxiliary power unit of an aircraft comprises an inlet, an outlet, a housing and a flow channel with a porous wall material that is arranged in the housing. An intermediate space is formed between the housing and the flow channel and divided into outer cells that are arranged around the flow channel by means of one or more partitions. This makes it possible to realize a very compact silencer with very good sound insulation properties. The sound dampening can be additionally improved by dividing the outer cells into outer regions and inner regions, by adapting the shape of the silencer to a tail section of an aircraft and by arranging an annular channel on the outlet.

A damping system is disclosed which includes a housing that receives vibrations, a mounting platform movably disposed with respect to the housing, at least one bearing surface on or attached to one of the housing and the platform, and at least one frictional member on or attached to the other of the housing and the platform in contact with the bearing surface. The system frictionally dampens vibrations received by the housing and isolates the platform from vibrations.

In a method for connecting at least two structural units for a body of a vehicle, which structural units have in each case at least one carrier unit which is in the form of a hollow profile and which has at least one reinforcement element arranged in the carrier unit, the respective reinforcement element is connected by structural foam to the corresponding carrier unit, wherein the reinforcement elements of the two structural units are formed in each case with a joining portion and are joined to one another. The structural units to be connected are aligned, and the reinforcement elements are pre-fixed in the carrier units before a heat treatment of the structural units, and are finally fixed by foaming and/or adhesive bonding after the heat treatment.

A bearing (1) comprising a block (10) of flexible material, having two end surfaces (11, 12); and a first fixture element (20) and a second fixture element (30) connected at each of the end surfaces (11, 12); wherein at least one rotational damping device (40) is arranged between the first and second fixture elements (20, 30), the bearing thus providing high dampening between structural parts of a structure, such as buildings, bridges, elevated highways, and mechanical systems (machinery).