Abstract: A damping cylinder assembly has a cylinder, a damping accumulator and a base closure part. The cylinder has a closure part, a piston unit, a cylinder pipe with a guide-side cylinder pipe end and a base-side cylinder pipe end. The closure part is located on the guide-side cylinder pipe end. The base closure part has a cylinder pipe receiving portion, a damping accumulator receiving portion and a fluid channel that connects the cylinder pipe receiving portion and the accumulator receiving portion. The piston unit slidingly passes through the guide closure part and, together with the cylinder pipe and the base closure part define-a working space connected to the fluid channel. The accumulator has a pressure capsule and a fluid connection to the fluid channel.

Abstract: A working cylinder has a cylinder with a cylinder tube, a first closure part arranged on a first cylinder tube end and a second closure part arranged on a second cylinder tube end, The cylinder tube and the closure parts define a cylinder interior. A piston unit defines at least one working space in the cylinder interior and passes through the first closure part and has an outer end portion. The working cylinder has a corrosion resistant rod-side threaded coupling module with a threaded portion and a weld-on portion. The threaded portion is for coupling to a device to be actuated. The coupling module is welded by the weld-on portion to the outer end portion of the piston unit by a weld seam. The threaded portion is arranged on a longitudinal axis of the piston unit.

Abstract: A cylinder has a coupling portion with a coupling ring and a locking body. A cylinder tube has an inner annular groove and a closure part is disposed in a tube end portion and has an outer annular groove axially open at one side. The annular grooves define an annular groove space that receives a coupling ring. The ring is segmented into a plurality of ring segments. The ring segments abut one another at separating cuts and are configured parallel to one another or open in a concentric direction. The closure part is secured at one axial end by the ring. The locking body is arranged on the closure part and has a circumferential ring surface that defines a pressure contact with the ring and form-fittingly secures the ring in the groove space. The locking body secures the closure part at one axial end by pressure contact with the ring.

Abstract: A working cylinder assembly has a cylinder component, an attachment part and a weld seam. The weld seam is a stepped hybrid weld seam, which has a lower weld seam zone and an upper weld seam zone. In the lower weld seam zone, the cylinder component has a lower cylinder component seam surface and the attachment part has a lower attachment part seam surface. The lower seam surfaces have a butt joint and the lower weld seam zone is a laser weld seam. In the upper weld seam zone, the cylinder component has an upper cylinder component seam surface and the attachment part has an upper attachment part seam surface. The upper weld seam zone is a laser hybrid weld seam with a welding filler material in an upper weld seam space defined by the surface separation (5.3) between the upper seam surfaces (5.1, 5.2).

Abstract: A cylinder has a coupling portion with a coupling ring and a locking body. A cylinder tube has an inner annular groove and a closure part is disposed in a tube end portion and has an outer annular groove axially open at one side. The annular grooves define an annular groove space that receives a coupling ring. The ring is segmented into a plurality of ring segments. The ring segments abut one another at separating cuts and are configured parallel to one another or open in a concentric direction. The closure part is secured at one axial end by the ring. The locking body is arranged on the closure part and has a circumferential ring surface that defines a pressure contact with the ring and form-fittingly secures the ring in the groove space. The locking body secures the closure part at one axial end by pressure contact with the ring.

Abstract: A working cylinder has a cylinder with a cylinder tube, a first closure part arranged on a first cylinder tube end and a second closure part arranged on a second cylinder tube end, The cylinder tube and the closure parts define a cylinder interior. A piston unit defines at least one working space in the cylinder interior and passes through the first closure part and has an outer end portion. The working cylinder has a corrosion resistant rod-side threaded coupling module with a threaded portion and a weld-on portion. The threaded portion is for coupling to a device to be actuated. The coupling module is welded by the weld-on portion to the outer end portion of the piston unit by a weld seam. The threaded portion is arranged on a longitudinal axis of the piston unit.

Abstract: A piston unit of a working cylinder includes a piston rod that has an outer thread on a piston-side coupling portion. A piston has an axial bore which has an inner thread and in which the piston rod is received. The outer thread and the inner thread define a common thread portion. The outer thread and the inner thread have a complementary conicity and a complementary thread geometry. The conicity has a conicity angle alpha of 0.3 to 5 degrees. The outer thread and the inner thread abut one another in a coupling end position in the thread portion in a gap and define a sealing plane. The outer thread and the inner thread have, in the thread portion in the coupling end position, an elastic deformation within the elastic limit of the piston rod and the piston. The elastic deformation is brought about by a surface pressure via a tightening torque.

Abstract: A degassing unit has a basic body with an inner discharge portion, an annular chamber an outer discharge portion. The body is to be fixed at a perforation of a cylinder residual air space. The inner discharge portion has an inner discharge channel and an inner annular body. The inner discharge channel connects the air space to the chamber. The inner annular body covers an intermediate outlet of the inner discharge channel and defines a first pressure barrier in a discharge direction and a second sealing plane in an inlet direction. The outer discharge portion has an outer discharge channel and an outer annular body. The outer channel connects the chamber to atmosphere via an intermediate inlet at the chamber and an outer outlet to atmosphere. The outer annular body covers the outer outlet and defines a second pressure barrier in an outlet direction and a second sealing plane in an inlet direction.

Abstract: A working cylinder with pressure medium overflow. A piston has a first inner annular groove with a seal and a second inner annular groove with a piston ring that has a ring gap. The seal has an axial motion clearance. A tube inner wall has a recess axially disposed such that when the piston is at a first closure part, the recess is positioned opposite the seal. The working cylinder has an overflow and a lifting operating state. In the overflow operating state, the piston is in an end position at the first closure part with the seal is positioned, in an end clearance position of the axial movement clearance thereof and an overflow cross-section between a radial limit of the seal and the recess is open and an overflow channel is open. In the lifting operating state, the seal is positioned, in a proximal end clearance position opposite and the overflow cross-section and channel are closed.

Abstract: A working cylinder has a cylinder with a cylinder tube, and a piston unit, The cylinder has a coupling portion which has a closure part and cylinder tube end portion that has a threaded cylinder tube portion, a cylinder tube intermediate portion and a cylinder tube end. The closure part has an external thread and the threaded cylinder tube portion has an internal thread corresponding to the external thread. The external thread and the internal thread define a common threaded portion which is couples the closure part and the cylinder tube with a form fit. The cylinder tube end is connected to the closure part by a circumferential ring weld seam configured as a laser-produced ring weld seam and defines a sealing plane which is tight to pressure medium. In an operating state under load alleviation, the common threaded portion does not absorb an axial tensile force, and in the operating state under load, the ring weld seam and the common threaded portion each absorb an axial tensile force.

Abstract: A working cylinder has a cylinder tube, a closure part and a further closure part disposed at cylinder tube ends. The closure part has a shaft portion and the cylinder tube has a cylinder tube end portion. The shaft portion and the cylinder tube end portion define a coupling portion where the shaft portion is axially inserted into the cylinder tube at the cylinder tube end portion. The shaft portion has a taper and is oversized, at least in part, relative to an inner diameter of the cylinder tube. The cylinder tube has an elastic circumferential expansion there. The coupling portion is constructed to axially couple the closure part and the cylinder tube. The cylinder tube end is bonded to the closure part by a circumferential annular weld seam that defines a sealing plane.

Abstract: A working cylinder has a cylinder tube has closure parts arranged at tube ends. The cylinder tube and the closure parts define a cylinder interior. The cylinder has a coupling section that has one of the closure parts, a cylinder tube end and a hollow adapter body. The closure part has an external thread and the adapter body has an internal thread that define a common threaded section constructed to releasably couple the closure part and the adapter body. The cylinder tube end is connected to the adapter body on a cylinder tube side thereof by a ring weld seam. The weld seam defines a sealing plane sealed with respect to a pressure media. The piston unit defines at least one working chamber inside the cylinder.

Abstract: A degassing unit has a basic body with an inner discharge portion, an annular chamber an outer discharge portion. The body is to be fixed at a perforation of a cylinder residual air space. The inner discharge portion has an inner discharge channel and an inner annular body. The inner discharge channel connects the air space to the chamber. The inner annular body covers an intermediate outlet of the inner discharge channel and defines a first pressure barrier in a discharge direction and a second sealing plane in an inlet direction. The outer discharge portion has an outer discharge channel and an outer annular body. The outer channel connects the chamber to atmosphere via an intermediate inlet at the chamber and an outer outlet to atmosphere. The outer annular body covers the outer outlet and defines a second pressure barrier in an outlet direction and a second sealing plane in an inlet direction.

Abstract: A working cylinder has a cylinder with a cylinder tube, and a piston unit, The cylinder has a coupling portion which has a closure part and cylinder tube end portion that has a threaded cylinder tube portion, a cylinder tube intermediate portion and a cylinder tube end. The closure part has an external thread and the threaded cylinder tube portion has an internal thread corresponding to the external thread. The external thread and the internal thread define a common threaded portion which is couples the closure part and the cylinder tube with a form fit. The cylinder tube end is connected to the closure part by a circumferential ring weld seam configured as a laser-produced ring weld seam and defines a sealing plane which is tight to pressure medium. In an operating state under load alleviation, the common threaded portion does not absorb an axial tensile force, and in the operating state under load, the ring weld seam and the common threaded portion each absorb an axial tensile force.

Abstract: A cylinder pipe assembly has a connection piece, and cylinder pipe with a main body and a connection portion. The connection portion has an outer shell calotte on a cylinder pipe outer shell and an inner shell calotte on a cylinder pipe inner shell, a connection hole, and a structural consolidation zone surrounds the connection hole. The calottes are concave embossed portions. The structural consolidation zone is arranged in a region between the calottes. The connection hole is punched and passes through the calottes. The connection piece is arranged at the connection portion and has a pressure medium tube and a connecting portion with an annular axial boundary contour that with an annular mating surface defines an annular contact surface. The cylinder pipe and the connection piece are connected in a bonded manner by an annular weld seam, and the weld seam defines a sealing plane.

Abstract: A working cylinder which has end-position damping. A piston ring passes over an axially offset pressure medium connection and encloses a pressure medium damping volume. The piston ring includes a ring joint which has a base section and a projection section. The piston ring is of sealing construction. The pressure medium flows out of the pressure medium damping volume via an axial transfer channel, which can be defined by an axial cylinder-tube groove or an axial piston-ring groove. Also, there is a damping piston ring, which is of sealing construction and which has an axial piston-ring groove.

Abstract: A piston ring includes a ring body with a first body end and a second body end arranged opposite one another to define a ring joint. The body has a radial ring surface axially displaceable relative to an inner barrel surface and an inclined ring surface that rests on an inclined ring groove surface. The first body end has a projection section with a projection section separating surface. The second body end has a base section with a receiving contour, a base section separating surface and a base section contour. The projection section separating surfaces and the base section separating surface are in sealing physical contact and define a plane. The plane intersects the inclined ring surface and defines an inner separating line at a second intersection line of the plane with the inclined ring surface.

Abstract: A cylinder includes a cylinder tube, a first closure part, a second closure part, and a piston unit. The cylinder tube has a first tube end and a second tube end. The tube and end closure parts define a cylinder interior. The piston unit defines at least one working space in the cylinder interior. The first closure part is connected to the tube by a first peripheral laser ring weld and the second closure part is connected to the tube by a second peripheral laser ring weld. The laser ring welds each define a fluid-tight sealing plane. A peripheral sealing ring is located between each closure part and a tube inner wall at an axial distance from the associated laser ring weld seam. The peripheral sealing ring defines a pressure-separated ring section between the peripheral sealing ring and the associated laser ring weld seam.

Abstract: A working cylinder has a cylinder tube has closure parts arranged at tube ends. The cylinder tube and the closure parts define a cylinder interior. The cylinder has a coupling section that has one of the closure parts, a cylinder tube end and a hollow adapter body. The closure part has an external thread and the adapter body has an internal thread that define a common threaded section constructed to releasably couple the closure part and the adapter body. The cylinder tube end is connected to the adapter body on a cylinder tube side thereof by a ring weld seam. The weld seam defines a sealing plane sealed with respect to a pressure media. The piston unit defines at least one working chamber inside the cylinder.

Abstract: A working cylinder has a cushioned end-stroke. The piston unit has a piston main part and a ring body. The exterior of the ring body receives a piston ring with a piston ring gap, and the ring opening of the ring body receives a guiding pin of the piston main part. A ring gap is formed between the ring body and the guiding pin, and the ring body has axial and radial play relative to the piston main part. The ring body has an axial ring surface on the piston main part side, and the piston main part has an axial counter ring surface on the ring body side opposite the axial ring surface. The piston unit is constructed so that during an inward movement into the cushioning zone, the piston ring passes axially over the pressure medium connection and the piston unit encloses a damping pressure medium volume. The piston unit is in a first operating state during an inward movement and a second operating state during an outward movement.