Abstract: A gas spring comprises a housing, in which a piston that is mounted on a piston rod is disposed for displacement, dividing the interior of the housing into two partial volumes filled with fluid. A valve is provided, by means of which to interconnect the partial volumes. The valve is designed such that, when a force that acts in the piston-rod push-in direction exceeds a given threshold, a valve pin, which serves to open and close the valve, is displaceable from a closing position against a spring unit into a position of opening by overload.

Abstract: A rotary actuator has a generally cylindrical housing for receiving one end of a control cable having an opposite end coupled to an actuator member of a device to control. Extending within the cylindrical housing is a rotating control handle having a spool which extends into the housing and engages one end of the cable, allowing the cable to wrap around the spool. Engaging an end of the spool within the cylindrical housing in one embodiment is a reversible ratchet disk which is biased against the housing by a compression spring engaging the disk on one side and engaging a locking end cap attached to the housing at the opposite side. The disk can be reversed to provide discrete ratchet stops at incremental positions of the control handle when in a first position or, if reversed, provides continuous reversible movement of the handle.

Abstract: Gas shock-absorber including two concentric tubes with an intermediary chamber and valve plug, and with a shaft of which the head separates two internal chambers, at which extremity is connected the body to the shock-absorber. The valve plug has to parts in direct contact between each other; the sliding of part in the external tube takes place by a seal situated between an upper metal washer and a slot of the part. The washer has a central neck which is introduced into the cavity of part. The other part of the valve plug has cavities which are intended to reduce its weight. The head of the shaft which separates the internal chambers is made of plastic and presents an upper countersunk part wherein is housed an annular seal; a washer is provided on top of the head and the assembly is riveted.

Abstract: An apparatus for preventing trolleys of aircraft during turbulence from leaving the floor of said aircraft includes a securing lock installed on a trolley of an aircraft for sensing the gravity on the trolley. Control is provided to prevent the action of the trolley from leaving the floor of the aircraft during turbulence. An actuation of the securing lock occurs for preventing the trolley from leaving the floor of the aircraft during turbulence. The securing lock includes a blade locking system for preventing the trolley on an aircraft during turbulence from leaving the floor of the aircraft by holding the trolley onto the seats adjacent to an aisle with extendable blades.

Abstract: An automotive wheel suspension comprised of a shock absorbing strut located within a retrofit air spring which is located where previously a standard coil was located. The air spring includes a single, double, or triple convoluted bellow comprised of a rubber bellow and two bead sealing rings mounted eccentrically onto the strut by a fixed lower adapter plate. The strut is also comprised with a rotatable upper adapter plate that allows the air spring to take the place of the previously mounted coil spring in order to allow load and ride height adjustment where beforehand the coil spring allowed none.

Abstract: The damper includes a damper housing and a piston assembly reciprocating therein. The damper housing includes an attachment device formed of an interior partially circular wall with a triangular cross section thereby forming an interior partially circular apex for engaging a cylindrical boss. This allows the damper to rotate about an axis of the interior partially circular wall and pivot about an axis perpendicular to the rotational axis. Additionally, the piston assembly includes a detent protrusion formed from a stem supporting a head, the radius of the head being greater than that of the stem. The detent protrusion is engaged by a keyhole-shaped aperture with a first portion with a radius of curvature substantially equal to that of the stem and a second portion with a radius of curvature substantially equal to that of the head. The detent protrusion can therefore rotate within the keyhole-shaped aperture.

Abstract: A lift strut with directional damping comprising a housing comprising a wall that defines a housing chamber, the housing defining an axis; spring means located in the chamber; piston means movable through the chamber along the axis in a first direction and a second direction, the spring means biasing the piston means in the first direction, the piston means comprising a shaft, a seat connected to the shaft along the shaft length, and a resilient member fixed to the seat, the resilient element comprising at least one primary damping ridge and a damping tongue, each of the at least one primary damping ridges being in friction engagement with the housing as the resilient member is moved in the first and second directions, the damping tongue being in engagement with the housing wall when the resilient member is moved in the first direction and being located away from the housing wall when the resilient member is moved in the second direction.

Abstract: A gas spring device includes a pressure adjustor having an actuator mechanism which regulates the rate of discharge through a pressure-release valve in equal bursts small enough to permit precise adjustment of the internal working pressure of the gas spring. Manually turning the actuator mechanism provides a consistent application of intermittent inertial force to the gas spring pressure-release valve so that resultant equal bursts provide a controlled release of pressure, even from imprecise manual operation. The chance of over-bleeding is eliminated since the mechanics of the actuator mechanism provides a single metered burst of released gas regardless of how quickly or slowly it is turned, thus the size of the burst is not dependent on the operator's skill. Because the adjustor mechanism is integrated directly into the device, it is compact and does not interfere with other surrounding mechanical structures.

Abstract: A seat suspension system includes a vibration dampener adapted to operate over less than the full range over which a seat may be raised and lowered by a seat height adjuster, such as an air spring. The dampener may apply dampening forces which vary non-linearly, depending upon the extent a seat moves as a result of seat vibration. In several specific forms, the dampening mechanism is unlatched to permit relative movement of the seat and seat support mechanism relative to the dampener during seat height adjustment, with the dampener being relatched to again apply a dampening force. A mechanically simply seat leveling system may be employed to return the seat to a desired elevation in the event loading on the seat is varied, for example if a seat occupant gets up off a seat.

Abstract: A connection bearing with a line connection comprises an annular bearing body with a through-opening which receives a bearing pin. The connection bearing has a receiving channel for receiving a line penetrating the connection bearing. The receiving channel is constructed at least up to the annular bearing body. Therefore, one end of the line can be grasped to hold it in a coaxial arrangement relative to the longitudinal axis of the connection bearing. The receiving channel in the bearing body for the line has an extension which extends along a direction that passes outside of the through-opening for the bearing pin.

Abstract: A hydraulic and pneumatic cylinder (10) for use on a vehicle (100) to improve the handling of the vehicle in a turn or curve. The cylinder repositions the rear wheel (108) of the vehicle in response to a change in the speed of the vehicle. When the vehicle enters a turn and decelerates, the piston of the cylinder moves to the extended position. When the vehicle exits the turn and accelerates, the piston of the cylinder moves to the compressed position.

Abstract: A longitudinal adjusting element has a housing (1) which is filled with a pressurizing medium and in which a piston (12) including a piston rod (16) is guided displaceably. The housing chambers (13,14) which are separated from each other by the piston (12) can be connected with each other or separated from each other with the assistance of a valve device (17). The valve device (17) has at least two overflow ducts (16,40) [sic. (26,40)] which have different throttling effects and which take effect jointly or successively while valve pin (29) is slid in to varying extents.

Abstract: A vibration damper module is described with a first member adapted for coupling to one of the vehicle and seat, and a shock absorber adapted to be coupled to the other of the vehicle and seat. The first member may take the form of a housing within which the shock absorber is substantially disposed. A latch selectively couples and decouples the housing to the shock absorber to respectively apply and relieve the application of the dampening force from the shock absorber to the seat which dampens vibrations in the seat. The shock absorber may include an external housing carrying a latch gripping surface, such as a plurality of teeth. The latch may comprise at least one latch arm having a latch surface. The latch arm may be shifted to a first position in which the latch surface and latch gripping surface are engaged to couple the first member to the shock absorber and to a second position wherein these components are disengaged.

Abstract: The support includes a tubular casing (1), whereby the remaining components of the support are accommodated in the interior of this casing. A stop (15,16) exists at the respective end of the casing. An end piece (12,13) is accommodated in the respective end portion of the casing (1) whereby the outer front surface (22,34) of the respective end piece rests on the assigned stop (15,16). A terminating or closing device (25,26) is assigned to that one side of the respective end piece, which faces the interior of the support, whereby a tubular interior part (10) extends between said terminating devices. A sealing ring (35) is arranged between the front surface (22,34) of the respective end piece (12,13) and the assigned stop (15,16). The outer diameter of this sealing ring (35) before the assemblage of the support is equal to the outer diameter of the remaining components lying in the interior of the support or it is smaller than the diameter of the remaining interior parts.

Abstract: A fluid spring has a cylindrical housing (1) in whose end sections pieces (12,13) are introduced. A hollow space (20) is configured in one of these end pieces (12), a control device (30) being located in the hollow space (20). The control device (30) has two sealing devices (31,32) and an actuating rod (33) which connects them. The planes of the sealing devices (31,32) do not run parallel to each other.

Abstract: A locking device includes a cylinder chamber that is filled with a working medium and is divided by a piston into two working sections. A flow connection between the working sections is controlled by a check valve and a gate valve, which are arranged in parallel. When the check valve opens, dynamic pressure of the working fluid flowing through the check valve from one working section acts on a fluid contact surface of the gate valve and opens the gate valve. After it opens, the gate valve is kept in the open position by a pressure in a bypass past the check valve so that working fluid can thereafter flow through the fluid connection, regardless of the state of the check valve.

Abstract: A vibration damper for a seat suspension system is disclosed with a shock absorber which dampens seat vibrations when the shock absorber is coupled to the seat suspension system. The shock absorber includes a dampening cylinder housing with a dampening piston slidable therein. The dampening cylinder housing is coupled to one of the vehicle and seat, such as to the floor of the vehicle. An elongated latch engaging member, which may be in the form of a dampening piston rod is coupled to the dampening piston. A latch is shiftable between first and second positions. When in the first position the latch engages the dampening rod, and when in the second position the latch disengages the dampening rod. When engaged to the dampening rod, the latch couples the dampening rod to the other of the vehicle and seat so that the shock absorber applies a dampening force to the seat. Conversely, when the latch disengages the dampening rod, the shock absorber is relieved from applying a dampening force to the seat.

Abstract: A release device for a tandem axle of a semi-truck is a compressible piston and cylinder, with the piston rod extending out of one end of the cylinder and biased into an extended position by a biasing mechanism such as compressed gas in the cylinder. A latch on the cylinder is releasably engageable with an indent on the piston rod to hold it in a retracted position. A hook on the cylinder engages over the handle of a manual release rod for a truck tandem axle, with an enlarged head on the end of the piston rod bearing against part of the frame adjacent the release rod with the piston rod in the latched, retracted position. Release of the latch puts biasing force on the piston rod, urging the cylinder outwardly away from the frame to pull out the release rod.

Abstract: A stay damper for a door etc., includes a cylinder member filled with filler gas under pressure, a piston rod slidable in the cylinder member and a cover supported by the projecting end of the piston rod so that the lower end of the cover can move radially toward and away from the cylinder. The upper end of the cylinder member is formed with a notch opening upward. When the stay damper is extended, the notch of the cylinder member catches the lower end of the cover and prevents inward movement of the piston rod to hold the stay damper in the extended state.

Abstract: An automotive suspension-locking device mounted to a shock absorber having a cylinder and a piston rod, the suspension-locking device includes a brake band provided around the piston rod of the shock absorber for locking and unlocking the shock absorber, structure for controlling the brake band, the control structure being connected to both end portions of the brake band, and an actuator connected to the control structure by a piston rod thereof for actuating the control structure.

Abstract: A stay damper for a door etc., includes a cylinder member filled with filler gas under pressure, a piston rod slidable in the cylinder member and a cover supported by the projecting end of the piston rod so that the lower end of the cover can move radially toward and away from the cylinder. The upper end of the cylinder member is formed with a notch opening upward. When the stay damper is extended, the notch of the cylinder member catches the lower end of the cover and prevents inward movement of the piston rod to hold the stay damper in the extended state.

Abstract: Disclosed is a gas cylinder type height-adjusting apparatus of a swivel chair which has a simple structure and thereby can be manufactured at a low cost. In the apparatus, an actuating pin opens an orifice so that working fluid can flow from the first chamber through the second chamber into the third chamber when the actuating pin is pressed down, while the actuating pin blocks up the orifice when the actuating pin is not pressed down. The orifice is formed in an actuating pin socket manufactured by coating synthetic resin after an integral single forming of a single material. The first chamber is defined by an alternating piston which is manufactured by coating synthetic resin after an integral single forming of a single material. The shaft bearing member has a shape of a single annular ring whose upper and lower surfaces are curved surfaces curved with a predetermined curvature or tapered surfaces tapered at a predetermined angle.

Abstract: An adjustable length gas spring comprises a housing, in which a piston mounted on a piston rod is guided for displacement. The piston divides the housing into two partial volumes. Furthermore, a valve is provided for the interconnection of the partial volumes. A device is provided for closing the valve, by means of which the valve is closed when the partial volume which the piston rod does not pass through reaches a given minimum length.

Abstract: A device for triggering a gas spring (b 1) with an actuating device (2) and an actuating member (4) operatively connected to the actuating device (2) and acting directly upon a terminal trigger (3) of the gas spring (1) is designed and constructed for a simple and reliable actuation with reduced triggering forces and an infinitely variable regulation of the extension speed and extended position such that the actuating member (4) is constructed as a force and/or distance reducing or multiplying lever arrangement (5), and that one of the levers—triggering lever (6)—directly presses the trigger (3)

Abstract: The damper includes a piston assembly which travels within a cylindrical damper housing between an extended position and a retracted position. A transverse channel is formed proximate to the open end of the damper housing. A latching diamond travels within the transverse channel. The piston assembly includes a piston shaft with a camming wall sub-assembly formed thereon which engages the latching diamond so that the piston assembly is latched in a “push-push” configuration in the extended position. In this latched configuration, the latching diamond is detent engaged by a concave detent apex formed on an island which includes a longitudinally chamfered portion. Additionally, the flexibility of the island in which the concave detent apex is formed may be increased by transverse passageways or “cored-out” areas in the piston shaft immediately adjacent to the island.

Abstract: The damper includes a housing assembly and a piston assembly with reciprocates within the cylindrical walls of the housing assembly. The piston assembly is formed from two disks which are spaced apart by a spacer with includes radially and longitudinally oriented planar projections which extend to a position radially inward of a periphery of the disks. The distal ends of the projections form longitudinally oriented surfaces upon which a toroidal seal slidably rides. At least one of the longitudinally oriented surfaces includes an air communication groove in communication with a groove on the trailing disk which extends to the periphery of the trailing disk. When the piston assembly is retracted from the housing assembly, the seal engages the leading disk thereby inhibiting air from flowing through the air communication groove thereby effectuating damping.

Abstract: An improved hydraulic strut (30) for mounting a moveable structure (24) to a support structure, the strut having an outer telescoping member (20) and an inner telescoping member (32). The outer telescoping member defines a first hydraulic chamber (402) and a second hydraulic chamber (400), connected by a fluid flow restrictor (100). The inner telescoping member includes a main piston (200) that translates within the second hydraulic chamber between a closed position, where the inner telescoping member is fully retracted into the outer telescoping member, and an open position, wherein the inner telescoping member is fully extended from the outer telescoping member.

Abstract: The invention relates to adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof, which are suitable for railway marshaling yards or rail lines where it is required to prevent wagons from running away, which are hydraulic equipment of no external energy source to automatically regulate wagon's speed and disposal methods of such equipment. The stop-wagon retarder is characterized in that a uni-directional return unit comprising a sealing valve plate and adjustable throttle valve, and a locking control valve composing of switch valve and positioning unit are mounted in the piston assembly, which make the returning speed and the locking speed for wagon at high speed adjustable, thus the aim of setting the retarder with different control levels and thresholds according to the wagon speed is realized.