A pneumatic hydraulic retractable device includes a fluid pressure cylinder having a cylinder body and a plug seat disposed in the cylinder body, a piston rod movably disposed in the fluid pressure cylinder, a control valve set having a valve seat disposed at the piston rod and forms an upper fluid chamber and a lower fluid chamber with the cylinder body therebetween, and a valve rod disposed in the valve seat for controlling communication between the upper and lower fluid chambers, and a pressure relief element forming a pressure relief gap with the piston rod. The pressure relief gap communicates with the lower fluid chamber through a communication portion of the pressure relief element. As such, when the valve rod is opened, the fluid is allowed to flow between the lower fluid chamber and the pressure relief gap through the communication portion for reducing airtight effect.

One example of a basketball system includes a post, a backboard, a connecting structure that connects the backboard to the post, and a height adjustment mechanism operable to adjust a position of the backboard relative to a reference surface, and the height adjustment mechanism includes one or more arms connected to the connecting structure, an adjustment handle connected to the one or more arms and to the support structure, a gas shock including a locking pin and connected to the support structure, to the one or more arms, and to the adjustment handle, and an actuator arm connected to the adjustment handle and operable to change a disposition of the locking pin of the gas shock when the adjustment handle is operated so that the locking pin is moved between first and second dispositions which respectively correspond to a locked state and an unlocked state of the gas shock.

A device for triggering a gas spring comprises an actuating device and an actuating element connected to the actuating device and acts on an end-side trigger of the gas spring. The actuating element acts on the trigger and is designed as a lever arrangement which reduces or multiplies the force and/or distance and which comprises an actuating lever connected to the actuating device. The device also comprises one trigger lever, which interacts with the actuating lever and acts on the trigger, and a housing. The housing has a gas spring connection unit. The upper end region of the gas spring can be connected to the trigger, which is guided into the interior of the housing. The gas spring connection unit has a continuous opening with an inner thread. In a clearance, there are devices that clamp and/or form-fittingly fix the upper end region of the gas spring in the housing.

An adjustable seat post arrangement, including a seat post, a pneumatic cylinder, a pressure vessel, a control valve and a valve actuating means, wherein the seat post is operatively connected to a cylinder barrel of the pneumatic cylinder, wherein the pneumatic cylinder includes a first chamber, which is situated on one side of a piston, and includes an open second chamber, which is situated on an opposite side of the piston, wherein the control valve is actuatable by the valve actuating means, wherein compressed air can be fed from the pressure vessel via lines and the control valve to the first chamber, wherein a first line leads from the control valve to the first chamber, and wherein a pressure spring which acts on the piston is provided in the open second chamber.

A pressure-adjustable gas spring is invented. A gas spring mainly consists of a cylinder tube, a piston in the cylinder tube, a piston rod, a valve rod and so on; gas and oil liquid are stored in the cylinder tube. Since the piston occupies the volume in the cylinder tube, the piston is compressed into the cylinder tube when working, then the piston moves in the axial direction in the cylinder tube to press the oil liquid, then the oil liquid compresses the gas so that the piston reaches the working position; when the external force loaded on the piston rod is removed, the gas recovers and expands, and the expanded gas pushes the oil liquid to reset the piston and move out the piston rod, so that the gas spring realizes a compression motion and a restoration damping motion.

A pressure-adjustable gas spring is invented. A gas spring mainly consists of a cylinder tube, a piston in the cylinder tube, a piston rod, a valve rod and so on; gas and oil liquid are stored in the cylinder tube. Since the piston occupies the volume in the cylinder tube, the piston is compressed into the cylinder tube when working, then the piston moves in the axial direction in the cylinder tube to press the oil liquid, then the oil liquid compresses the gas so that the piston reaches the working position; when the external force loaded on the piston rod is removed, the gas recovers and expands, and the expanded gas pushes the oil liquid to reset the piston and move out the piston rod, so that the gas spring realizes a compression motion and a restoration damping motion.

A device for triggering a gas spring comprises an actuating device and an actuating element which is operatively connected to the actuating device and acts on an end-side trigger of the gas spring. The actuating element acts on the trigger and is designed as a lever arrangement which reduces or multiplies the force and/or distance and which comprises an actuating lever, which is connected to the actuating device. The device also comprises at least one trigger lever, which interacts with the actuating lever and which acts on the trigger and a housing. A first housing connecting unit is provided on the housing. The connected actuating device is guided substantially parallel to the longitudinal direction of the gas spring. A second housing connecting unit is provided on the housing. The connected actuating device is guided substantially transverse to the longitudinal direction of the gas spring.

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).

A device for triggering a gas spring (1) comprising an actuation device (2), an actuating element (4) which is operatively connected to the actuating device (2) and which acts directly on an end trigger (3) of the gas spring (1), wherein the actuating element (4) is configured as a lever arrangement (5) which reduces or multiplies the force or path, wherein one of the levers (trigger lever (6)) presses directly onto the trigger (3), wherein the actuating device (2) comprises an electrical magnet unit (30), which is provided with electric energy via an electrical supply and can be activated via a switch unit (60), characterised in that there is a control unit (40) which can be activated via the switching unit (60) and activates the electric magnet unit (30) according to the signals of the switch unit (60), wherein the the magnet unit (30) is actuated such that for a predetermined time interval an override phase of the magnet unit (30) with an increased voltage and a subsequent holding phase with a reduced voltage are produced.

The gas spring includes a cylindrical cylinder body that stores gas, a piston body that partitions the inside of the cylinder body into a rod-side gas chamber and a piston-side gas chamber as having a flow path capable of allowing gas flow between the rod-side gas chamber and the piston-side gas chamber, a rod body that is connected to the piston body as having a hollow portion, a push rod that moves in the axial direction of the rod body with operation of an operator as being inserted to the hollow portion of the rod body, and a valve that the flow path with movement in the axial direction in the piston body as being arranged separately from the push rod and movable with the push rod.