The present invention relates to an energy storage apparatus (10) comprising a compressible spring (11) wound around a main shaft (28) extending between a releasing means (20) and a compressing means (21), said compressing means (21) and releasing means (20) being in a fixedly attached relationship with said compressible spring (11) at two ends of the main shaft (28), said compressing means (21) and releasing means (20) being rotatable at different speeds so as to compress the compressible spring (11) at one longitudinal side of the main shaft (28) while simultaneously releasing the compressible spring (11) at the other longitudinal side, said energy storage apparatus (10) further comprising a hydraulic jack (26) continuously driven by a hydraulic pump (13) in the manner that said compressible spring (11) is compressed by said compressing means (21) to which rotational movement is imparted by said hydraulic jack (26).

In order to secure a reached extension position of a piston rod (22, 22) of an in particular multi stage operating cylinder device (100) with at least one operating cylinder unit (50) not only through the operating pressure in the cylinder (1, 1) of the operating cylinder unit (50) but additionally mechanically, a mechanical safety through interlocking safety elements (4a, b) in the interior of the operating cylinder device (100) is provided which is activated exclusively by the operating pressure in the first pressure cavity and disengaged by a pressure in a second operating cavity.

A telescopic actuator comprising a cylinder (2) in which a rod (3) is mounted to slide along a sliding axis (X), the actuator including a locking member comprising a locking finger (10) that is movable along a locking direction (Y) that is perpendicular to the sliding axis, between a locking position in which an end (9) of the locking finger (10) is engaged in a groove (8) of the rod in order to lock the rod in position, and a retracted position in which the end of the finger is disengaged from the groove in order to release the rod, a locking indicator (20) being secured to the locking finger to be movable between a position indicating locking when the locking finger is in the locking position, and a position indicating unlocking when the locking finger is in the retracted position, the actuator being characterized in that the locking indicator is secured to the locking finger by a connection (22, 23, 24) suitable for being interrupted in the event of the end of the finger being broken off while the rod is locked, a thrust spring (25) being arranged in the locking finger to push the locking indicator towards the position indicating unlocking when said connection is interrupted.

The invention relates to shut-off valve for controlling flow of a pressurised gas. The shut-off valve comprising a body defining a passage extending between a gas inlet channel and a gas outlet channel, and a sealing element, and an emergency stop mechanism. The sealing element arranged to, in a first position, close the passage, and in a second position, open the passage to allow gas to flow between the gas inlet channel and the gas outlet channel through the passage. The invention also relates to a method for controlling flow of a pressurised gas with a shut-off valve and a method for activating an emergency stop of a shut-off valve.

A system including a phaser with a first lock pin and a second lock pin in the rotor assembly. The first and second locks pins having a locked position where they engage a recess in the housing assembly and an unlocked position in which they do not engage the housing assembly. The first lock pin locks the rotor assembly to the housing assembly when the phaser is in or near an intermediate phase angle position. The second lock pin locks the rotor assembly to the housing assembly when the phaser is at a full retard position. Alternatively, the second lock pin can lock the rotor assembly to the housing assembly when the phaser is at a full advance position. The second lock pin is spring biased towards the unlocked position and is pressurized to engage and move to the locked position by either the advance or the retard chamber.

A crane telescope locking device includes a control device which is hydraulically in contact with a telescoping cylinder of a crane telescope and, for the purpose of actuating, with at least one cylinder lock hydraulic cylinder and includes a valve which is open in its inactivated resting state and thus opens a fluidic connection between the telescoping cylinder and the at least one cylinder lock hydraulic cylinder. A telescoping cylinder (6) of a crane includes such a crane telescope locking device.

A lockable actuator includes: a body; a screw for pivoting relative to the body; a nut engaged on the screw so as to move along the screw between an over-retracted first position and a deployed second position on opposite sides of a retracted third position; a sleeve constrained to rotate with the screw and slidably mounted thereon in order to be moved by the nut; and an obstacle secured to the sleeve and a pawl capable of passing collectively between an active state and an inactive state, the pawl and the obstacle being arranged in such a manner that the pawl in its active state can co-operate with the obstacle only after the nut has been moved through a predetermined distance from its third position towards its second position.

Provided are tensioners to tension a closed loop chain of a chain drive system. The tensioners can include a housing with an open end, an enclosed end opposite the open end including an inlet supply, a bore extending from the open end to an area directly above the inlet supply to form a housing seat, a movable sleeve formed in the housing bore having an open end adjacent the open end of the housing, a closed end in contact with the housing seat, a sleeve bore extending from the open end to the closed end and a controlled inlet formed through the closed end thereof, a hollow piston disposed in the sleeve bore and a spring disposed in the piston bore to apply a bias on the piston outward from the sleeve bore.

A powered side panel system is used in conjunction with a loading bed found on trailers and other flatbed vehicles. The system includes a side panel having a vertical member. The side panel is configured to pivot about a panel axis in communication with the trailer. A lever arm extends between the side panel and an actuator. The actuator pivots the lever arm about a lever axis. The lever arm contacts the vertical member and controls the rate of radial motion of the side panel about the panel axis. A control unit is configured to regulate the operation of the actuator device.

A gas cylinder actuator with safely device, comprising a tubular containment jacket, two opposite heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, a first head having a through hole for the passage of a stem-piston, and a second opposite head, a stem-piston, between the tubular jacket, the heads and the stem-piston there being a chamber for pressurized gas, wherein at least one head of the two heads is constituted by a body that is separate with respect to the tubular jacket and is retained in the tubular jacket by means of an extraction-preventing shoulder that protrudes from the body of the head and is adapted to abut against a corresponding internal annular protrusion that protrudes radially from the internal surface of the tubular jacket.