A damper apparatus includes an adjusting bolt including a head part rotatably stored in an adjusting bolt storage part formed in a base part, and a male thread part including a tip end formed in a male thread shape. An adjusting member includes: a female thread part, which is a part in a female thread shape fastened to the male thread part of the adjusting bolt and movably provided along an axis line of the adjusting bolt; a tapered surface part with which the tip end of a push rod comes into contact and formed in a tapered shape with respect to the axis line of the adjusting bolt; and wall parts rising from both ends of the tapered surface part with reference to the circumferential direction of the adjusting bolt, and interposing the push rod therebetween.

A multi-mode air shock is disclosed herein. The air shock includes an air spring having a primary air chamber, and a damper having an insertion end to telescope within the primary air chamber and a coupler to couple with a portion of a vehicle. An adjuster housing is fixedly coupled to an end of the air spring opposite of the damper, the adjuster housing having a secondary air chamber in communication with the primary air chamber and a mounting structure to couple with a different portion of the vehicle. There is a bulkhead with a valve to open or close the fluid communication between the primary air chamber and the secondary air chamber. The air shock also includes a tertiary air chamber in fluid communication with the secondary air chamber but not in fluid communication with the primary air chamber except via the secondary air chamber.

The invention relates to a device (10) for triggering a gas spring (1), comprising an actuating apparatus (2), an actuating element (4), which is operatively connected to the actuating apparatus (2) and acts on an end trigger (3) of the gas spring (1), and a housing (20), wherein the housing (20) has a gas-spring connection hole (70), by means of which the upper end region of the gas spring (1) can be connected with the trigger (3) fed through into the interior of the housing (20), the gas-spring connection hole (70) is designed a through-hole, and means for the clamping fixation of the upper end region of the gas spring (1) inserted into the hole are present, characterized in that the housing (20) has an open slot (60), which extends from the gas-spring connection hole (70) to the end outer face (66) of the housing (20) and over the length of the gas-spring connection hole (70) at least in some regions, a left and a right protruding side wall region (68.1, 68.2) are formed by means of the slot (60), and the means for clamping and fixing are present in the region of the left and the right side wall regions (68.1, 68.2), which means for clamping and fixing clamp the left and the right side wall regions (68.1, 68.2) to each other, whereby a clamping force is applied to the end region of the gas spring (1) inserted into the gas-spring connection hole (70).

An apparatus for optimizing vibration attenuation of a printed circuit board (PCB) by means of a tunable control for adjusting the volumetric storage capacity, effective mass and travel displacement of a particle impact damper (PID). The apparatus is comprised of a housing with a single or plurality of sealed storage tank(s) containing a payload of tungsten balls (or other materials) with a single or plurality of adjustment screw(s). The volumetric capacity of the storage tank is at maximum when the screw is fully withdrawn from apparatus. The volumetric capacity of the apparatus is reduced when the screw is inserted into the storage tank. The tunable adjustment screw controls the performance of the PID to dampen and attenuate (reduce) the vibration in a printed circuit board without the need to add or remove the payload of tungsten balls inside the particle impact damper.

A fluid damper having a damper housing with a first and a second fluid volume, and a damping piston located within the damper and separating the first and second fluid volume. The damper piston has a piston fluid pathway formed therethrough and between the first and second fluid volume. The fluid damper includes a fluid accumulator having a pressurizable gas volume and an accumulator fluid volume isolated from one another by a separation member. The fluid damper has a first fluid pathway extending solely between the first fluid volume and the accumulator fluid volume, and the fluid damper has a second fluid pathway extending solely between the second fluid volume and the accumulator fluid volume. A flow control valve is located in at least one of the first and the second fluid pathways, and the flow control valve has a non-zero threshold value.

A shock absorber (10) has a case (11) in which a piston rod (25) is disposed, the piston rod (25) being reciprocable in an axial direction of the case (11), and a rotation cylinder (14) is rotatably provided inside the case (11) and is movable in the axial direction of the case (11). A cylinder hole (35) is partitioned by a piston (32) provided on the piston rod (25) into a front-side chamber (35a) and a rear-side chamber (35b). A spring force of a compression coil spring (37) urges the piston rod (25) in a direction to protrude from the case (11). An orifice (42), whose communication opening degree with a fluid passage (34) varies according to a rotated position of a rotation operation portion (15), is formed on the rotation operation portion (15), and positioning recesses are formed on the case (11) and are spaced apart from each other at intervals in a circumferential direction of the case (11).

A partition member includes an orifice passage through which the main liquid chamber and the auxiliary liquid chamber communicate with each other, a plurality of first communication holes through which the main liquid chamber and the accommodation chamber communicate with each other, and a second communication hole through which the auxiliary liquid chamber and the accommodation chamber communicate with each other, in the partition member, a tubular member which protrudes in an axial direction toward an elastic body is disposed on a first wall surface in which the first communication hole opens and which forms a part of an inner surface of the main liquid chamber, the plurality of first communication holes open in both an inner portion located on an inner side than the tubular member and an outer portion located on an outer side than the tubular member of the first wall surface.

A vibration absorber includes a screw, a displacement adjustment member, a first spring, a second spring, a mass block, a casing, a cover and a connector. The displacement adjustment member is engaged with the screw. The mass block is located between the first spring and the second spring, wherein the mass block respectively connects the first spring and the second spring on both sides and the screw passes through the mass block. The casing encloses the screw, the displacement adjustment member, the first spring, the second spring and the mass block. The cover covers one opening of the casing. The connector covers the other opening of the casing. The first spring is located between the mass block and the displacement adjustment member and connects respectively the mass block and the displacement adjustment member. The coefficients of elasticity of both the first spring and the second spring are both non-linear.

The present invention is a seat bottom suspension system adapted to provide a varying spring constant. An embodiment includes a first plurality of flat elongated biasing members in communication with at least one axle adapted to translate in a direction generally parallel with the longitudinal axis of the flat elongated biasing members. An embodiment may include a second set of flat elongated biasing members set at a lower height than the first plurality of flat elongated biasing members to provide a progressive increase in the spring constant as the down force seen on the seat increases.

An electronic valve interface for a shock assembly is disclosed. The electronic valve interface includes a housing, an outlet cover shim stack land and a threaded housing barrel. An electronic valve with a main flow path within a portion of the housing. An outlet cover covering an outlet of the electronic valve. An outlet cover shim stack having a first cracking pressure and working in conjunction with the outlet cover to provide a pressure to a working fluid. A blow-off piston having a blow-off flow path. A blow-off shim stack having a second cracking pressure different from the first cracking pressure. A threaded retaining nut operating in conjunction with the outlet cover shim stack land to provide a single retaining force for the outlet cover shim stack, the blow-off shim stack, and the blow-off piston located axially on the threaded housing barrel, where the outlet cover shim stack and the blow-off shim stack are opposed directional shim stacks.