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US 6,786,464 B2Granted
Pneumatic valve
AssigneeSamsung Electronics Co., Ltd.
InventorSsang-Suk Oh
Life of this patent
Estimating the term…
Abstract
A pneumatic valve includes a cylinder having at least one gas port for providing inflow and outflow of a gas; a piston arranged in the cylinder and performing a reciprocating, straight-line movement in response to the inflow and outflow of the gas; a first valve shaft passing through the piston and having a first end portion including a first coupling portion; and a second valve shaft including a second coupling portion and having a first end portion protruding from the cylinder, wherein the second coupling portion is coupled to the first coupling portion.
Claims17
A pneumatic valve, comprising:
- a cylinder having at least one gas port for providing an inflow and outflow of a gas;
- a piston arranged in the cylinder and performing a reciprocating, straight-line movement in response to the inflow and outflow of the gas;
- a first valve shaft passing through the piston and having a first end portion including a first coupling portion;
- a second valve shaft including a second coupling portion connected to the first coupling portion and having a first end portion protruding from the cylinder;
- and
- a lubricant injection apparatus connected to the second valve shaft for supplying a lubricant to an inner surface of the cylinder through the second valve shaft,
- wherein the second valve shaft includes at least one lubricant passage therein.
4 more elements
A pneumatic valve, comprising:
- a piston arranged in a cylinder;
- a first valve shaft pas sing through the piston and including a first coupling portion;
- a second valve shaft including a second coupling portion and at least one lubricant passage therein;
- and
- a lubricant injection apparatus connected to the second valve shaft for supplying a lubricant to an inner surface of the cylinder through the lubricant passage,
- wherein the first coupling portion of the first valve shaft is coupled to the second coupling portion of the second valve shaft so that the piston performs a reciprocating, straight-line movement in a longitudinal direction of the first and second valve shafts.
3 more elements
Dependencies are inferred from the claim text.