Pneumatic Linear Actuator
OwnerRonald Nadererinventor
Life of this patent
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Abstract
The invention relates to a pneumatic actuator. According to one embodiment, the actuator has the following: a housing having a pressure chamber; a rod inserted into the pressure chamber of the housing from the outside; a rod seal which is located around the rod and seals the pressure chamber; and a rod guide which is mounted on the housing and is designed to guide the rod along the longitudinal axis thereof. There is no piston arranged in the pressure chamber. Rather, an unsealed annular gap is present inside the pressure chamber between the rod and an inner wall of the pressure chamber, so that a gas pressure prevailing in the pressure chamber can propagate in the entire pressure chamber as far as the rod seal.
Claims20
1-19. (canceled)
A device, comprising:
- a first housing with a first pressure chamber;
- a first rod introduced from the outside into the first pressure chamber;
- a first rod seal arranged around the first rod and sealing the first pressure chamber, wherein inside the first pressure chamber, an unsealed annular gap is present between the first rod and an inner wall of the first pressure chamber so that a gas pressure present in the first pressure chamber can propagate throughout the entire first pressure chamber up to the first rod seal;
- a first rod guide mounted on the first housing and configured to guide the first rod along a longitudinal axis of the first rod, wherein the first rod guide is spaced from the first rod seal;
- and
- a restoring element arranged to counteract a force exerted on the first rod by the gas pressure.
A pneumatic linear reactor, comprising:
- a housing with a pressure chamber;
- a rod introduced from the outside into the pressure chamber;
- a rod seal arranged around the first rod and sealing the first pressure chamber, wherein inside the first pressure chamber, an unsealed annular gap is present between the rod and an inner wall of the pressure chamber so that a gas pressure present in the pressure chamber can propagate throughout the entire pressure chamber up to the rod seal;
- a rod guide mounted on the housing and configured to guide the rod along a longitudinal axis of the rod and absorb bending moments;
- and
- a restoring element arranged to counteract a force caused by the gas pressure on the rod.
Dependencies are inferred from the claim text.