Abstract: A gas-filled cylinder, particularly for a damping device with single manifold, the cylinder comprising: a tubular jacket, closed at one end by an annular head portion, a rod with a piston which translates inside the jacket through the head portion, the piston being directed toward the inside of the jacket, the jacket and the piston defining a portion of an expansion/compression chamber for the gas, at least one sealing element between the piston and the internal surface of the jacket. The cylinder has at least one safety hole on the internal surface of the jacket.

Abstract: An apparatus for the controlled return of the stems in cylinders of the types that can be applied to a press for stamping sheet metal, comprising: at least one fluid-operated cylinder), at least one hydraulic accumulator which is fluidically connected to the at least one cylinder by means of a hydraulic circuit which comprises: a duct for the discharge of the working fluid from the at least one cylinder and a duct/branch for the intake of the working fluid in the hydraulic accumulator, a duct for loading the working fluid in the at least one cylinder and at duct/branch for the output of the working fluid from the hydraulic accumulator.

Abstract: A gas cylinder actuator with safety device for uncontrolled return of the piston-stem, comprising: a tubular containment jacket, two opposing heads for closing the tubular jacket, a first head which is provided with a through hole for passage and for translation guidance with respect to an axis of symmetry for a piston-stem, and a second, opposing head, a piston-stem, which comprises a stem portion and a piston portion, sealing elements which are arranged so as to act against the stem portion at the passage and guidance hole, a chamber for pressurized gas being defined between the tubular jacket, the heads and the piston-stem; such gas cylinder actuator comprises, between the first head and the piston portion, a bushing, which is coupled to the tubular jacket with elements of preventing translation with respect to the axis, and is designed to encounter the piston portion, the bushing being configured to at least be deformed in the event of impact with the piston portion owing to the uncontrolled return of

Abstract: A gas-filled cylinder , particularly for a damping device with single manifold, the cylinder comprising: a tubular jacket, closed at one end by an annular head portion , a rod with a piston which translates inside the jacket through the head portion, the piston being directed toward the inside of the jacket, the jacket and the piston defining a portion of an expansion/compression chamber forthe gas, at least one sealing element between the piston and the internal surface of the jacket. The cylinder has at least one safety hole on the internal surface of the jacket.

Abstract: A pressure sensor for a gas-filled cylinder, which comprises a body from which a connector protrudes for coupling to an opening for filling a gas-filled cylinder with gas, a first through hole which passes through the connector and the body and a second hole which connects the first through hole to a sensor element which is connected electrically to at least one electronic board for processing a signal that can be detected by the sensor element.

Abstract: An apparatus for the controlled return of the stems in cylinders of the types that can be applied to a press for stamping sheet metal, comprising: at least one fluid-operated cylinder), at least one hydraulic accumulator which is fluidically connected to the at least one cylinder by means of a hydraulic circuit which comprises: a duct for the discharge of the working fluid from the at least one cylinder and a duct/branch for the intake of the working fluid in the hydraulic accumulator, a duct for loading the working fluid in the at least one cylinder and at duct/branch for the output of the working fluid from the hydraulic accumulator.

Abstract: A gas cylinder actuator with overtravel indicator device, which includes a tubular containment jacket, an end face, an opposite annular guiding portion, a stem-piston arranged so as to pass through the annular guiding portion, wherein the stem-piston protrudes from the jacket in an axial direction, a chamber for pressurized gas being defined between the tubular jacket, the end face, the annular guiding portion for the stem-piston, an indicator device for indicating that overtravel for the stem-piston has occurred; and an annular body, which is inserted partially into a corresponding seat between the jacket and an annular portion so as to surround the outer lateral surface of an end portion of the annular guiding portion; the annular body rests in an axial direction on an element that protrudes radially within the jacket and is integral with the jacket.

Abstract: A pressure sensor for a gas-filled cylinder, which comprises a body from which a connector protrudes for coupling to an opening for filling a gas-filled cylinder with gas, a first through hole which passes through the connector and the body and a second hole which connects the first through hole to a sensor element which is connected electrically to at least one electronic board for processing a signal that can be detected by the sensor element.

Abstract: A gas cylinder actuator with safety device, which comprises: a tubular containment jacket, two opposing heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, a first head provided with a through hole for the passage of a stem-piston, and a second head provided with a gas filling duct, a stem-piston, between the tubular jacket, the heads and the stem-piston there being a chamber for pressurized gas; the second head has a seat for the accommodation of a flow control element of the gas filling duct and corresponding sealing means, the flow control element comprising a tab for controlling a retracting stroke of the stem-piston, the control tab protruding from a body that has a lightened portion for triggering a controlled fracture or deformation in the event the control tab is crushed by the stem-piston.

Abstract: 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.

Abstract: A gas cylinder actuator with overtravel safety device, comprising: a tubular containment jacket, two opposite heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, one head of which being provided with a through passage hole for a stem-piston, a stem-piston, between the tubular jacket, the heads and the stem-piston there being a chamber for pressurized gas, the gas cylinder actuator being characterized in that the tubular jacket has, at at least one of the portions affected by a head, a lightened portion that is preset to be deformed in case of compression in an axial direction, allowing the relative axial movement of the corresponding head toward the inside of the tubular jacket so as to form a gas discharge passage between the jacket, the head and the corresponding sealing element.

Abstract: A gas cylinder actuator with safety device for uncontrolled return of the piston-stem, comprising: a tubular containment jacket, two opposing heads for closing the tubular jacket, a first head which is provided with a through hole for passage and for translation guidance with respect to an axis of symmetry for a piston-stem, and a second, opposing head, a piston-stem, which comprises a stem portion and a piston portion, sealing elements which are arranged so as to act against the stem portion at the passage and guidance hole, a chamber for pressurized gas being defined between the tubular jacket, the heads and the piston-stem; such gas cylinder actuator comprises, between the first head and the piston portion, a bushing, which is coupled to the tubular jacket with elements of preventing translation with respect to the axis, and is designed to encounter the piston portion, the bushing being configured to at least be deformed in the event of impact with the piston portion owing to the uncontrolled return of

Abstract: A gas cylinder actuator with overtravel safety device, comprising a tubular jacket for gas containment, which is closed hermetically at one end by a bottom provided with a gas filling valve and at the opposite end by a head portion, which is provided with a hole for the passage of a stem with a piston, the jacket, the bottom and the piston forming the gas expansion and compression chamber.

Abstract: A gas cylinder actuator with safety device, which comprises: a tubular containment jacket, two opposing heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, a first head provided with a through hole for the passage of a stem-piston, and a second head provided with a gas filling duct, a stem-piston, between the tubular jacket, the heads and the stem-piston there being a chamber for pressurized gas; the second head has a seat for the accommodation of a flow control element of the gas filling duct and corresponding sealing means, the flow control element comprising a tab for controlling a retracting stroke of the stem-piston, the control tab protruding from a body that has a lightened portion for triggering a controlled fracture or deformation in the event the control tab is crushed by the stem-piston.

Abstract: A gas cylinder actuator with overtravel indicator device, which comprises: a tubular containment jacket, an end face, an opposite annular guiding portion for a stem-piston, which protrudes from the jacket in an axial direction, a stem-piston arranged so as to pass through the annular portion, a chamber for pressurized gas being defined between the tubular jacket, the end face, the annular passage portion for a stem-piston and the stem-piston, a device for indicating that overtravel for the stem-piston has occurred; and an annular body, which is inserted partially into a corresponding seat between the jacket and the annular portion so as to surround the outer lateral surface of an end portion of the annular portion; the annular body rests in an axial direction on an element that protrudes radially within the jacket and is integral with the jacket.

Abstract: A gas cylinder actuator with overtravel safety device, comprising a tubular jacket for gas containment, which is closed hermetically at one end by a bottom provided with a gas filling valve and at the opposite end by a head portion, which is provided with a hole for the passage of a stem with a piston, the jacket, the bottom and the piston forming the gas expansion and compression chamber.

Abstract: A gas cylinder actuator with overtravel safety device, comprising: a tubular containment jacket, two opposite heads for closing the tubular jacket, with corresponding sealing elements between the heads and the jacket, one head of which being provided with a through passage hole for a stem-piston, a stem-piston, between the tubular jacket, the heads and the stern-piston there being a chamber for pressurized gas, the gas cylinder actuator being characterized in that the tubular jacket has, at at least one of the portions affected by a head, a lightened portion that is preset to be deformed in case of compression in an axial direction, allowing the relative axial movement of the corresponding head toward the inside of the tubular jacket so as to form a gas discharge passage between the jacket, the head and the corresponding sealing element.

Abstract: 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.

Abstract: A gas-operated spring with overtravel safety device, comprising: a tubular containment jacket, an end face, an opposite annular portion for closing the tubular jacket and for the passage of a piston rod, a piston rod arranged so as to pass through the annular portion, a chamber for pressurized gas being defined between the tubular jacket, the end face, the annular portion and the piston rod, the gas-operated spring comprising elements for clearly indicating that overtravel for the piston rod has occurred.

Abstract: An apparatus for the controlled pressurization of gas cylinder actuators connected to a single gas filling line, comprising elements for controlling and recovering a pressurized gas flow originating from pressurized gas supply elements and directed to a gas filling line, at least one sensor for detecting the pressure of the gas that is present in the gas filling line which is adapted to carry pressurized gas to at least one gas cylinder actuator connected thereto, electrically controlled valve elements adapted to allow/interrupt the flow of pressurized gas in the gas filling line, an electronic control and management unit connected to the at least one pressure sensor and to the electrically controlled valve elements to automate the opening/closing of the valve elements in dependence on the signals that arrive from the at least one pressure sensor.