Driving device
AssigneeStabilus GmbH
InventorUlrich Probst
Life of this patent
Estimating the term…
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.
Claims17
A driving device for pivoting a flap with respect to a body, the device comprising:
- a cylindrical pressure tube having a closed first end and a second end with a seal;
- a piston axially movable in the pressure tube, the piston dividing the pressure tube into a first working chamber and a second working chamber;
- a piston rod connected to the piston and extending through the first working chamber and the seal;
- a gas under pressure in the first and second working chambers;
- a sealing and guiding cap fixed to the second end of the pressure tube, the cap carrying a radially outward facing sealing ring;
- an outer tube having 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, the piston rod being fixed to the closed first end of the outer tube;
- and
- a conveyor for conveying a fluid into and out of the third working chamber,
- wherein the piston rod has an end opposite from the piston formed with a threaded pin extending through the first end of the outer tube, the conveyor for conveying a fluid comprising an axial bore in the threaded pin, the axial bore communicating with the third working chamber.
A driving device for pivoting a flap with respect to a body, the device comprising:
- a cylindrical pressure tube having a closed first end and a second end with a seal;
- a piston axially movable in the pressure tube, the piston dividing the pressure tube into a first working chamber and a second working chamber;
- a piston rod connected to the piston and extending through the first working chamber and the seal;
- a gas under pressure in the first and second working chambers;
- a sealing and guiding cap fixed to the second end of the pressure tube, the cap carrying a radially outward facing sealing ring;
- a outer tube having 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, the piston rod being fixed to the closed first end of the outer tube;
- and
- a conveyor for conveying a fluid into and out of the third working chamber,
- wherein the piston rod has an end opposite from the piston formed with a threaded pin, the driving device further comprising an adaptor piece screwed onto the treaded pin and fixed to the closed first end of the outer tube.
A driving device for pivoting a flap with respect to a body, the device comprising:
- a cylindrical pressure tube having a closed first end and a second end with a seal;
- a piston axially movable in the pressure tube, the piston dividing the pressure tube into a first working chamber and a second working chamber;
- a piston rod connected to the piston and extending through the first working chamber and the seal;
- a gas under pressure in the first and second working chambers;
- a sealing and guiding cap fixed to the second end of the pressure tube, the cap carrying a radially outward facing sealing ring;
- an outer tube having 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, the piston rod being fixed to the closed first end of the outer tube;
- a conveyor for conveying a fluid into and out of the third working chamber;
- and
- a connection element fixed to the first end of the outer tube, the connection element having a fastening shaft with an internally threaded first receiving chamber for receiving a threaded pin.
A driving device for pivoting a flap with respect to a body, the device comprising:
- a cylindrical pressure tube having a closed first end and a second end with a seal;
- a piston axially movable in the pressure tube, the piston dividing the pressure tube into a first working chamber and a second working chamber;
- a piston rod connected to the piston and extending through the first working chamber and the seal;
- a gas under pressure in the first and second working chambers;
- a sealing and guiding cap fixed to the second end of the pressure tube, the cap carrying a radially outward facing sealing ring;
- an outer tube having 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, the piston rod being fixed to the closed first end of the outer tube;
- and
- a conveyor for conveying a fluid into and out of the third working chamber,
- wherein the piston comprises a switching valve.
Dependencies are inferred from the claim text.