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US 5,467,686 AGranted
Linear drive without a piston rod
AssigneeInvest Tech AG
InventorReinhard Lipinski
Life of this patent
Estimating the term…
Abstract
A linear drive without a piston rod, which has a laterally slotted guide tube closed on the end faces and a piston mounted so as to be slidably displaceable therein, is provided with a sealing band and with separate profile elements engaging the sealing band. The sealing band extends from one end of the guide tube along its longitudinal slot to its other end. In order to hold the sealing band in the longitudinal slot, separate profile elements are arranged in the longitudinal slot. The profile elements cause the sealing band to engage the guide tube.
Claims21
A linear drive, comprising:
- a guide tube having a longitudinal slot defined therein by at least one flank, and at least one closing device for closing an end face of the guide tube;
- a piston mounted in the guide tube and displaceable in a longitudinal direction;
- a web connected to the piston and passing through the longitudinal slot;
- a sealing band for sealing the longitudinal slot at least in pressurized regions and which is held fixedly at end faces relative to the guide tube, at least one portion of the sealing band being seated in the longitudinal slot;
- and
- at least one separate profile element disposed in the longitudinal slot and extending essentially along a longitudinal extension of the flank of the longitudinal slot;
- wherein the profile element is connected to the sealing band such that a catching connection is formed between the sealing band and the guide tube.
4 more elements
Dependencies are inferred from the claim text.