Abstract: A telescopic pneumatic device includes an outer cylinder, an inner cylinder disposed in the outer cylinder and having a cylinder wall defining a gas chamber, a piston mounted in the gas chamber, a piston rod connected to the piston, two flow passages formed in the cylinder wall, and a control valve operable to allow or interrupt fluid communication between a gas-controlling chamber section and a piston-receiving chamber section of the gas chamber. The inner cylinder is made of a rigid plastic material.

Abstract: A telescopic pneumatic device comprises an outer cylinder, an inner cylinder disposed in the outer cylinder and having a cylinder wall defining an air chamber, a piston mounted in the air chamber and having a piston rod connected thereto, a flow passage provided between the cylinder wall and the outer cylinder, and a control valve operable to permit or interrupt fluid communication between the flow passage and the air chamber. The inner cylinder is made of a rigid plastic material and includes a valve mounting part for receiving the control valve, the valve mounting part being formed in one piece with the cylinder wall.

Abstract: A door closer includes a closer casing, a pivot unit, and a length-variable damping cylinder. The pivot unit includes a pivot axle, a cam member, and a cam follower member. The pivot axle has a drive end portion that extends into and that is retained rotatably in the closer casing, and a coupling end portion that extends out of the closer casing. The cam member is mounted co-rotatably on the drive end portion of the pivot axle. The cam follower member is disposed in the closer casing, and is acted upon by the cam member. The damping cylinder is disposed in the closer casing, and has one end coupled to the cam follower member and an opposite end anchored to the closer casing.

Abstract: A sink stopper is provided for a sink body having a base formed with a drain hole, and includes a strainer, an operating device and a closure member. The strainer is mounted on the base, and has a perforated strainer wall disposed in the drain hole. The operating device includes a stationary member mounted on the strainer wall, a movable member coupled movably to the stationary member, and a switching unit operable to retain releasably the movable member between first and second positions relative to the stationary member. The closure member is mounted on the movable member, is configured to form a clearance with the base to permit draining of water through the drain hole when the movable member is at the first position, and abuts sealingly against the base to seal the drain hole when the movable member is at the second position.

Abstract: An armrest assembly includes a lower part defining a lower chamber, and an upper part defining an upper chamber therein. An abutting member is disposed in the upper chamber. A cylinder-and-piston unit includes a cylinder extending into the upper chamber to abut against the abutting member, and a piston mounted securely in the lower chamber and telescopically extending into the cylinder. A locking member includes a spring-biased button projecting from the cylinder, extending through the abutting member and into the upper chamber, and pressible to move between a locked position, in which, the cylinder is locked by the locking member against axial movement relative to the piston, and an unlocked position, in which, the cylinder is axially movable relative to the piston.

Abstract: An armrest assembly includes a lower part defining a lower chamber, and an upper part defining an upper chamber therein. An abutting member is disposed in the upper chamber. A cylinder-and-piston unit includes a cylinder extending into the upper chamber to abut against the abutting member, and a piston mounted securely in the lower chamber and telescopically extending into the cylinder. A locking member includes a spring-biased button projecting from the cylinder, extending through the abutting member and into the upper chamber, and pressible to move between a locked position, in which, the cylinder is locked by the locking member against axial movement relative to the piston, and an unlocked position, in which, the cylinder is axially movable relative to the piston.

Abstract: A hinge assembly includes a damping unit mounted on a securing seat that is connected to a door frame, a housing embedded in a door panel, and a hinge member and a positioning member interconnecting the securing seat and the housing. The damping unit includes a fluid cylinder and a piston rod having an actuating end pivoted to the positioning member. Due to the presence of the damping unit, movement of the door panel relative to the door frame can be damped.

Abstract: A hinge assembly includes a damping unit mounted on a securing seat that is connected to a door frame, a housing embedded in a door panel, and a hinge member and a positioning member interconnecting the securing seat and the housing. The damping unit includes a fluid cylinder and a piston rod having an actuating end pivoted to the positioning member. Due to the presence of the damping unit, movement of the door panel relative to the door frame can be damped.

Abstract: A hinge member includes a rotatable cam element with a first cam face and a slidable cam element with a second cam face associated with the first cam face in such a manner that the second cam face moves away from the first cam face when the slidable cam element is cammed by the rotatable cam element due to an applied external force. A biasing member is connected to the slidable cam element so as to accumulate a returning force when the second cam face moves away from the first cam face and so as to urge the second cam face to move toward the first cam face when the external force ceases to be applied on the rotatable cam element.

Abstract: A hinge member includes a rotatable cam element with a first cam face and a slidable cam element with a second cam face associated with the first cam face in such a manner that the second cam face moves away from the first cam face when the slidable cam element is cammed by the rotatable cam element due to an applied external force. A biasing member is connected to the slidable cam element so as to accumulate a returning force when the second cam face moves away from the first cam face and so as to urge the second cam face to move toward the first cam face when the external force ceases to be applied on the rotatable cam element.