77results about How to "Reduce the spring rate" patented technology

A micromechanical element described includes a vibrating system having a vibrating body and an elastic suspension by means of which the vibrating body is suspended to be able to vibrate, and an adjuster for adjusting a resonant frequency of the vibrating system by applying a voltage difference between at least one part of the vibrating body and at least one stationary electrode.

An audio speaker having a speaker housing surrounding a back volume that is divided into a rear cavity behind a speaker driver and an adsorption cavity separated from the rear cavity by a permeable partition, is disclosed. More particularly, the adsorption cavity may be defined between the speaker housing and the permeable partition, and may be directly filled with adsorptive particles to adsorb gas during sound generation. The permeable partition may allow the gas to flow between the rear cavity and the adsorption cavity, and may retain the adsorptive particles within the adsorption cavity. Other embodiments are also described and claimed.

A squeeze film damper assembly having a variable stiffness and damping control. The squeeze film damper includes a damper chamber formed by two flexible bellows chambers of the sides. A first pressure source is applied to the damper chamber to regulate the damping. A second pressure source is applied to the flexible bellows chambers to vary the stiffness of the damper. The flexible bellows chambers are secured between an outer member and an inner member of the damper assembly and form the sealed damper chamber. A pressure ratio between the bellows chambers and the damper chamber can vary to control the stiffness of the squeeze film damper.

A micromechanical component which includes a substrate; a first rigid electrode system situated on or in the substrate; a second electrode system suspended on the substrate; an intermediate space provided between the first electrode system and the second electrode system; the second electrode system being mounted on the suspension post in an elastically deflectable manner with respect to the first electrode system such that the capacitance of a capacitor formed by the first electrode system, the second electrode system, and the intermediate space may be modified.

A piston for an air spring of a heavy-duty vehicle includes a sidewall and a central hub. The sidewall and the central hub are attached to a first bottom plate of the piston. A top plate is removeably attached to a top portion of the sidewall and a top portion of the central hub. A bottom portion of said central hub includes a second bottom plate that is recessed relative to the first bottom plate for attachment to a piston mounting pedestal that is in turn mounted to a beam of a suspension assembly of the heavy-duty vehicle.

A hand-held power tool includes a spring-mounted decoupling device (16) for supporting a tool handle (14) on the tool housing (4) and having a first spring-mounted support (18) and a second spring-mounted support (20) that is spaced from the operational axis (A) in a second direction (y) perpendicular to the first direction (z) further away than the first spring-mounted support (18) that has a smaller spring stiffness along the second direction (y) than along the first direction (z).

A gas inlet valve (1) for a compressor (64), comprising: a housing (2); a valve device (6) arranged between a gas inlet portion (3) and a gas outlet portion (4), a valve body (57) resting against a valve seat (56) in a sealing manner when the valve device (6) is in a closed operating state, and the valve body (57) being lifted from the valve seat (56) when the valve device (6) is in an open operating state; a piston device (42) which comprises a first piston portion (43) and a second piston portion (44) which is different from the first piston portion (43), the first piston portion (43) being displaceably guided in a first cylinder portion (22) of the housing (2) and the second piston portion (44) being displaceably guided in a second cylinder portion (27) of the housing (2) which is different from the first cylinder portion (22); and a piston rod (38) which is displaceably mounted in the housing (2) and mechanically couples the valve body (57) of the valve device (6) to the piston rod (38), a fluid line (39) putting a first cylinder chamber (49) of the first cylinder portion (22) in operative fluid communication with the gas outlet portion (4), it being possible to apply a control pressure to a second cylinder chamber (52) of the second cylinder portion (27) in order to lift the valve body (57) from the valve seat (56). A rotary compressor comprising a gas inlet valve (1) of this type and a method for operating a compressor (64), in particular a rotary compressor, comprising a gas inlet valve (1) of this type.

A nasal dilator capable of introducing separating stresses in nasal outer wall tissues has a truss of a single body with a resilient member secured therein and a pair of spaced-apart end surfaces which, when forced toward one another from initial positions to substantially reduce direct spacing therebetween by a spacing reducing force external to said truss, results in restoring forces in the truss tending to return to the original direct spacing between the end surfaces. A resilient member, which is symmetrical with respect to a centerline of the truss that is perpendicular to the long axis of the truss, has a spring rate which continuously diminishes from the centerline to the end surfaces. An adhesive on the end surfaces adhesively engages exposed surfaces of nasal outer wall tissues sufficiently to keep the truss attached to the nasal wall surfaces while subjecting them to the restoring forces.

An improved nuclear fuel assembly having elongated grid straps curved in a substantially undulating wave pattern along their axial length and interleaved together to form an egg-crate configuration having a plurality of roughly square cells that support fuel rods and guide tube thimbles. The cells that support fuel rods have their outer walls curved outward to increase the contact area around the fuel rod cladding The interior straps are on a diagonal with regard to a peripheral strap and at least one cell adjacent each fuel rod cell is left empty for the unobstructed flow of coolant. Additional coolant mixing devices can be added to the empty cells. The walls of each fuel rod cell are devoid of dimples and, in one embodiment, springs.

A stretchable belt (1) provided for medical purposes for use on the body of a patient has at least one sensor (8) for detecting at least one parameter of the patient's body. An adaptation to different body sizes and motions of the patient is provided without separate length adjusting members being necessary or without the need to stock different belt sizes. Furthermore, the belt is able to be manufactured at a low cost and makes possible simple and reliable handling, even for patients. The belt material (1) has at least one material area (2) with a lower spring rate in the longitudinal extension than at least one material area (3) with a higher spring rate of the belt (1).

A method for producing a tubular spring (12) in the form of a cylindrical hollow body, especially for pre-tensioning a piezoelectric actuator element (2) of an actuator unit (1) of a fuel injector comprises the step of providing a thin-walled, solid-drawn steel tube with a plurality of regularly arranged longish recesses (14) by means of laser cutting. Thus, an actuator unit (1) comprises a piezoelectric actuator element (2) which is arranged in a thin-walled cylindrical hollow body, wherein the hollow body being elastically embodied and pre-tensioning the actuator element (2). Furthermore, the hollow body is a solid-drawn steel tube which is provided with a plurality of longish recesses (14).

A suspension for a vehicle seat having four bellcranks which guide the seat substantially vertically, oscillate on a central pivot on elevated stationary pivots mounted on a lower frame, with upper arms of the bellcranks pivotally attached to a seat cushion upper frame and the lower arms indirectly attached to adjustable tension springs that are attached to the upper frame; the lower ends with substantial inward offsets so as to rotate downwardly toward the mounting deck of the vehicle while clearing the lower frame and adjustable sliders; the bellcranks being coupled longitudinally and laterally to stay in phase and keep the upper frame level.

A nasal dilator capable of introducing separating stresses in nasal outer wall tissues has a resilient member and a pair of spaced-apart end surfaces which can be forced toward one another from an initial flat position of the dilator to thereby substantially reduce the direct spacing therebetween by an external spacing reducing force. This results in restoring forces in the dilator tending to return it to the original direct spacing between the end surfaces. Resilient members, which can be asymmetrical with respect to a centerline of the dilator that is parallel to the long axis of the dilator, have a spring rate which continuously diminishes from the centerline to the end surfaces. The edges of the resilient members are contiguous to the edge of the cushion layer so that adhesive on the cushion layer is at the same level as the bottom surface of the resilient members. An adhesive on the end surfaces adhesively engages exposed surfaces of nasal outer wall tissues sufficiently to keep the dilator attached to the nasal wall surfaces while subjecting them to the restoring forces.

A torsion bar spring arrangement for a wheel suspension of a motor vehicle includes an actuator arranged on a vehicle body or on a subframe and constructed to variably pre-tension the torsion bar spring arrangement, a coaxial first torsion bar spring having an output side that is connected by way of an output lever to a wheel suspension element of the wheel suspension, and a housing of the actuator supported on the vehicle body in at least one bearing location for movement in a circumferential direction and resiliently yieldingly supported on the vehicle body in the direction of torsional moments acting on the torsion bar spring by way of at least one spring element.

The invention discloses a chassis air spring, which is characterized in that the bottom end of a capsule is press-mounted with the side wall of a piston, the upper end of the capsule is buckled and connected with an upper cover plate, a gas pipe joint and a locating stud are respectively arranged at one end of the upper cover plate, the gas pipe joint is hollow and communicated with the interior of the capsule, a bulge is arranged in the middle of the bottom end of the upper cover plate, an emergency stopping block is connected with the bulge, the whole piston is made of metal materials and has an integrated structure, and a bolt hole is arranged at the bottom end of the piston. By the above setting, the chassis air spring is lighter than the original steel spring plate and improves the damping effect simultaneously, thus meeting the requirements of the current vehicle technology for light weight and comfort and satisfying the requirements of vehicles for driving on roads with various complicated conditions.

A muffler hanger including: a rubber annular portion; a rubber arm constituting an elastic support portion for the muffler; an upper space and a lower space for permitting deformation of the rubber arm; a first mounting hole disposed in a center of the rubber arm in a vehicle left-right direction to extend in a vehicle front-back direction when installed on the vehicle, and attached in a mated condition to a support pin provided on one of a muffler side and a vehicle body side; and a pair of second mounting holes disposed at locations away to right and left sides from the first mounting hole to extend in the front-back direction, and attached in a mated condition to support pins on the other side. The first and second mounting holes are arranged to form a row in the left-right direction, with positional relationships such that when installed on the vehicle the holes overlaps one another as viewed in the left-right direction.

A suspension for a vehicle seat having four bellcranks which guide the seat substantially vertically, oscillate on a central pivot on elevated stationary pivots mounted on a lower frame, with upper arms of the bellcranks pivotally attached to a seat cushion upper frame and the lower arms indirectly attached to adjustable tension springs that are attached to the upper frame; the lower ends with substantial inward offsets so as to rotate downwardly toward the mounting deck of the vehicle while clearing the lower frame and adjustable sliders; the bellcranks being coupled longitudinally and laterally to stay in phase and keep the upper frame level.

The invention relates to a pneumatic spring device for a motor vehicle, including a rolling piston (4), a pneumatic spring cover (5) axially movable thereto, and an interposed elastomer covering as rolling bellows (6) with a trapped compressible air volume. According to the invention, at least one additional spring element (3) is connected in series to the pneumatic spring (2), with a radial bearing (14) of the rolling piston (4) and / or the pneumatic spring cover (5) being integrated as torsion compensation.

A torsion bar system for a vehicle axle, in particular a rear axle, of a two-track vehicle, includes first and second rotary actuators, each of which is associated with a vehicle side, for an active suspension control. Each rotary actuator has at least one motor / gear unit with which torques can be generated and transmitted as actuating forces onto a wheel suspension element via an output lever. The motor / gear units of both rotary actuators are arranged in a common housing which is rotationally fixed to the vehicle body. The housing has at least two attachment points for bracing the vehicle body, wherein the attachment points are spaced from one another across a bearing distance, and the housing is mounted on the vehicle body in a rigid assembly via said attachment points.

A micromechanical component having a fixing point and a seismic weight, which is connected to the fixing point by at least one spring and is made at least partially out of a first material, the first material being a semiconductor material, the seismic weight being additionally made out of at least one second material, and the second material having a higher density than the first material. In addition, a manufacturing method for a micromechanical component is provided, having the steps of forming a seismic weight at least partially out of a first material, the first material being a semiconductor material, connecting the seismic weight to a fixing point of the micromechanical component, using at least one spring, and forming the seismic weight from the first material and at least one second material, which has a higher density than the first material.

A tension roller assembly includes a tension roller, a pivotable support arm, a tension arm, a compression spring, a rod, first and second spring stops, a mounting plate, and an overcenter assembly connected to an end of the tension arm. The overcenter assembly connects the tension arm to the mounting plate. The overcenter assembly is configured to make a pivoting movement over a pivot trajectory between engaged and disengaged positions. The overcenter assembly further has a center position located between the engaged and disengaged positions. The pivot trajectory between the center position and the disengaged position is divided into a tensioned section in which the end stop does not engage the stop surface and the spring exerts a force on the overcenter assembly, and a free-moving section in which the end stop engages the stop surface and the spring does not exert any force on the overcenter assembly.