Abstract: A pressure medium connection with a pressure connection element and a pressure line connector. The pressure connection element includes a contact surface for contacting the outside surface of a cylinder, a bore, divided into a first bore section of larger diameter and a second bore section of smaller diameter. A shoulder is formed at the transition from the first bore section to the second bore section, and two slots formed in the wall of the pressure connection element. A piston-cylinder unit, such as a hydraulic or pneumatic actuator or a hydropneumatic actuator in motor vehicles, especially for moving vehicle devices, tops, doors, hinged lids, or the like, includes the pressure medium connection.

Abstract: The invention relates to a gas spring which uses a compensating medium acting on a compensating piston in order to compensate the dependence on temperature of its characteristic. According to a first aspect of the invention, a compensating medium (16M) is selected whereof the critical temperature (TK) is between the lower limit temperature (Tlower) and a temperature exceeding the upper limit temperature (Tupper) Of the range of operating temperatures of the gas spring (50) by up to 100° C., and the gas spring (50) is designed such that, at an operating temperature (TB) of the gas spring (50) not exceeding the critical temperature (TK) of the compensating medium (16M), the point indicating the state of the compensating medium (16M) lies on or above the vapor pressure curve.

Abstract: A continuously blockable locking device with a cylindrical housing forming a work chamber, a closed first end and a second end located opposite from the closed end, a piston rod which is guided out of the housing in a sealed manner through the second end so as to be arranged coaxial to the center longitudinal axis by means of a guiding and sealing device, a piston which is arranged at the end of the piston rod situated in the housing and which divides the work chamber into a first work space, through which the piston rod extends, and a second work space, and a housing which is connected to, or can be connected to, the housing and which forms a valve chamber, a first valve assembly and a second valve assembly being arranged therein. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium.

Abstract: Presented is a piston-cylinder unit that includes a closed first end, a cylinder, a sealing device, and a piston installed in the cylinder with freedom to slide back and forth. The piston divides the cylinder into a first space at the closed end and a second space at the end opposite the closed end. The piston-cylinder unit further includes a piston rod attached to one side of the piston. The piston rod projects through the second space and is guided out of the cylinder concentrically with the longitudinal center axis of the cylinder at the second end, opposite the first end, in a sealed manner through the sealing device. The piston-cylinder unit further includes a ferrofluid, and at least one magnetic element that has a magnetic field, which cooperates with the ferrofluid present in the cylinder.

Abstract: A gas spring includes a center longitudinal axis and a closed first end, a cylinder filled with gas under pressure, a piston displaceably arranged in the cylinder and dividing the cylinder into a first work chamber near the closed end and a second work chamber remote of the closed end, a piston rod passing through the second work chamber and guided out of the cylinder through a guiding and sealing device, and a mechanical blocking device whose action depends upon the internal pressure. The piston has a piston chamber connected to the outside of the cylinder. A first safety element and a second safety element form the mechanical blocking device. The first safety element connects the first work chamber to the outside via the piston chamber when the pressure in the cylinder is too low and brings the second safety element into contact with the inner wall of the cylinder.

Abstract: A lockable piston-cylinder unit includes a cylinder having at least one axially facing counterstop; a piston dividing the cylinder into a first working chamber and a second working chamber; a piston rod extending through the first working chamber to a free end outside the cylinder; and a fastening tube having a first end in which the free end of the piston rod is fixed, a second end which receives the cylinder coaxially, and at least one axially facing supporting stop. When the piston rod is extended to maximum extension, the fastening tube is rotatable relative to the cylinder from a release position, wherein the supporting stop is offset from a respective counterstop, to a locking position, wherein the supporting stop faces the counterstop so that the fastening tube cannot move axially relative to the cylinder.

Abstract: A housing having a first housing end and a second housing end, a substantially cylindrical work chamber formed in the housing, a piston which is arranged in the work chamber so as to be displaceable and which divides the work chamber into a first work space near the first housing end and a second work space near the second housing end, a piston rod which is arranged at one side of the piston and which projects through the first work space and is guided out of the work chamber in a sealed manner at the first housing end through a guiding and sealing device, and a valve chamber which is formed in the housing parallel to the work chamber and in which a first valve assembly and a second valve assembly are arranged. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium.

Abstract: A driving device for pivoting a flap with respect to a body includes a cylindrical pressure tube having a closed first end and a second end with a seal, a piston dividing the pressure tube into a first working chamber and a second working chamber, a piston rod extending through the first working chamber and the seal, a gas under pressure in the first and second working chambers, and a sealing and guiding cap fixed to the second end of the pressure tube. An outer tube has a closed first end and an open second end which receives the pressure tube in a telescoping manner, thereby forming a third working chamber between the second end of the pressure tube and the first end of the outer tube, wherein a fluid can be conveyed into and out of the third working chamber.

Abstract: A driving device for a hatch in a motor vehicle includes a first fastening element which can be connected to a stationary structural component, a second fastening element which can be connected to a movable structural component, and a housing tube fixed to the second fastening element and extending toward the first fastening element. A spindle drive includes a threaded spindle and a nut fixed in a spindle tube connected to the first fastening element by a bolt, wherein the spindle can be driven in rotation to move the first fastening element axially relative to the housing tube. An elastomeric decoupling element between the spindle tube and the bolt decouples the spindle drive from the first fastening element in order to damp noise and vibration.

Abstract: A driving device for a hatch in a motor vehicle includes a first fastening element which can be connected to a stationary structural component, a second fastening element which can be connected to a movable structural component, a spindle drive including a threaded spindle having an axis of rotation and a spindle nut arranged on the threaded spindle, and a rotary drive having a driveshaft for rotating spindle to move the first fastening element axially relative to the second fastening element. A stroke detection sensor for continuously detecting the position of the movable structural component includes a rotatable sensor element driven in rotation by the driveshaft and a stationary sensor element for continuously detecting the rotational position of the rotatable sensor element. A gear reduction unit is provided between the driveshaft and the rotatable sensor element so the revolutions of the sensor element are reduced by about 14:1.

Abstract: An actuating device for a movable component includes a reversible motorized drive for driving the movable component from a normal position into an open position, the movable component being uncouplable from the reversible motorized drive in its open position. The actuating device includes a driving element movably drivable by the reversible motorized drive and engages in a crank recess and extending along the path of motion of the movable component. A length of the crank recess corresponds at least to a path of motion of the driving element between its normal position and its open position or partially open position. After adjustably driving the movable component into its open position, the driving element may be returned by the reversible motorized drive into the normal position.

Abstract: A piston-cylinder unit for pivoting a flap with respect to a motor vehicle body includes a cylinder having an open end with a seal, a closed end, and an interior space between the ends; a piston unit axially movable in the cylinder, the piston unit dividing the interior space into a first working space and a second working space; a piston rod connected to the piston unit and extending through the first working space and the seal; and flow connections connecting the first working space to the second working space. A switch element arranged outside the cylinder is switched in response to movement of the piston with respect to the cylinder.

Abstract: A drive device for a lid of a motor vehicle includes a first fastening element connectable to a stationary component or to a movable component, and a housing tube located at the end of the drive device opposite the first fastening element and is free to move axially relative thereto. The housing tube includes, at the end opposite the first fastening element, a second fastening element connectable to the movable component or to the stationary component. A spindle drive including a threaded spindle and a spindle nut mounted on the threaded spindle is actuatable by a rotary device to move the first fastening element and the housing tube axially relative to each other. A stroke position of the first fastening element can be detected by a magnetic field sensor which senses longitudinal movements of a permanent magnet of the spindle along a sensitivity area of the stationary magnetic field sensor.

Abstract: A system for opening and closing a motor vehicle, the flap is swivalably mounted along one of its edge areas at a stationary structural component part about a horizontal swiveling axis. A first drive device and a second drive device act in parallel to more like flap from a closed position into an open position. The first drive device is a non-self-locking drive device, and the second drive device comprises a cylinder filled with a fluid under pressure. An interior of the second drive device is divided by a piston into a first work chamber and a second work chamber, wherein a piston rod of the piston is guided outward through the first work chamber. A valve arrangement in the piston closes a flow connection between the first work chamber and the second work chamber in a stationary operating state of the flap.

Abstract: Disclosed is a drive device for the automatic opening and closing of hinged lids, especially motor vehicle lids. The drive device includes a housing, a rotary drive installed in the housing, at least one spindle drive, which can be driven by the rotary drive and which comprises a threaded spindle and a spindle nut, a connecting device mounted on the spindle nut, and at least one actuating pull, comprising a cable and a sleeve, where one end of the cable is attached to the connecting device.

Abstract: Apparatus for the motorized opening and closing of a motor vehicle body part which can be pivoted with respect to a vehicle body about a hinged lid axis includes a guide cylinder having a first end and a second end which can be coupled to the body at a pivot axis which is parallel to the hinged lid axis, a piston guided displaceably in the cylinder, and a piston rod having one end attached to the piston and an opposite end which protrudes from the first end of the cylinder and can be coupled to the pivotable body part at a distance from the hinged lid axis. A drive device drives first and second Bowden cables, which extend in parallel from the second end of the cylinder, to displace the piston in the cylinder. The first Bowden cable includes a sheath which is supported on the piston and a core which is fixed to the first end of the cylinder. The second Bowden cable includes a sheath which is supported on the second end of the cylinder and a core which is fixed to the piston.

Abstract: The invention pertains to an object support post with a vertical tube, which has a support plate at one end and a guide bush at the other end, in which a pneumatic spring is guided with freedom to slide back and forth. The pneumatic spring has a pressure cylinder, the interior of which is filled with a pressurized gas, where the interior is divided by a sliding piston into a first working chamber and a second working chamber, which chambers can be connected to each other by a bypass, which can be opened by a manually actuated valve. The piston has a piston rod, which extends through the second working chamber and is guided out of the pressure cylinder through a seal, the free end of the rod being attached to the support plate. A first stop ring, which, when the piston rod is in its outwardly extended position, encloses the area where the piston rod leaves the pressure cylinder, is connected permanently to the vertical tube and has a first, axially oriented, helical stop surface on one side.

Abstract: A motor vehicle with a cargo compartment lid, such as a hinged trunk lid or tailgate, which can be moved between an open position and a closed position around a pivot axis includes, at least one lid position sensor is integrated into the cargo compartment lid in such a way that the arrangement or position of the cargo compartment lid in space can be detected.

Abstract: Disclosed is an adjusting device for raising a hinged lid from a lowered, closed position into a raised, open position, especially for a motor vehicle, with a cylinder closed at one end, a piston, which divides the interior space of the cylinder into a first working chamber and a second working chamber, and which is installed with freedom to move axially back and forth in the cylinder, a piston rod, attached to the piston, the rod extending axially through the first working chamber and projecting through a seal to the outside, one or more flow connections connecting the first working chamber to the second working chamber, and a first adjusting element and a second adjusting element, wherein the first and second adjusting elements are designed to telescope into and out of each other and have guide devices, which make it possible to open the hinged lid into a partially opened position or into a completely opened position.

Abstract: A device is provided for pivoting a lid, especially a motor vehicle lid, around a pivot axis. The pivoting device has a first actuating unit on one side of the lid and a second actuating unit on the opposite side of the lid. The two actuating units have substantially the same drive forces in a first section of the lid travel distance and different drive forces in a second section of the lid travel distance.