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US 12,311,142 B2Granted
Medical pin index residual pressure valve
AssigneeThe ESAB Group, Inc.
InventorsGareth Pemberton, Karel Zmek, Zdenek Firych
Life of this patent
Estimating the term…
Abstract
A medical pin index valve includes a pair of pin holes, the positions of which are selected based on the particular gas to be used with the pin index valve. The pin index valve includes a residual pressure device therein. In one embodiment, the residual pressure device is designed so that it closes the valve when the pressure in the tank is between 0.5 bar to 5 bar.
Claims19
A medical gas pin index valve, comprising:
- a body defining an inlet passageway, a body cavity, and an outlet passageway, the cavity being in fluidic communication with each of the inlet passageway and the outlet passageway;
- a fixed member coupled to the body, the fixed member being substantially located in the body cavity, the fixed member defining its own cavity;
- and
- a sealing member located in the fixed member cavity, the sealing member being placeable in a sealed position and an opened position, the sealing member preventing a fluid from traveling from the inlet passageway to the outlet passageway when the sealing member is in its sealed position, the sealing member being biased toward its sealed position by a first spring and by a second spring, each of the first spring and the second spring engaging both the fixed member and the sealing member, the second spring being located inside of the first spring, wherein the first spring has a first length, the second spring has a second length, and the second length is greater than the first length.
1 more element
A medical gas pin index valve, comprising:
- a body defining an inlet passageway and an outlet passageway, the body having a fixed member coupled thereto, the fixed member defining a first cavity;
- a sealing member movably mounted in the body, a least a portion of the sealing member being located in the first cavity, the sealing member defining a second cavity, the sealing member being placeable in a sealed position in which a fluid is prevented from traveling from the inlet passageway to the outlet passageway, and an opened position in which a fluid can travel from the inlet passageway to the outlet passageway;
- a first spring engaging the fixed member and the sealing member, the first spring biasing the sealing member toward its sealed position;
- and
- a second spring engaging the fixed member and the sealing member, the second spring biasing the sealing member toward its sealed position, wherein the first spring applies a first biasing force at a first location on the sealing member, and the second spring applies a second biasing force at a second location on the sealing member, the second location being located inside of the first location, and the first spring has a first length, the second spring has a second length, and the second length is greater than the first length.
2 more elements
A medical gas pin index valve, comprising:
- a valve body defining an inlet passageway, a cavity, and an outlet passageway, the body having a fixed member coupled thereto and located in the cavity;
- a sealing member movably mounted in the body, the sealing member being placeable in a sealed position in which a fluid is prevented from traveling from the inlet passageway to the outlet passageway, and an opened position in which a fluid can travel from the inlet passageway to the outlet passageway;
- and
- a nested biasing system located between the fixed member and the sealing member, the nested biasing system applying a first biasing force on the sealing member at a first location and a second biasing force on the sealing member at a second location, each of the first biasing force and the second biasing force being applied to the sealing member along a same direction, wherein the sealing member moves to its sealed position when the combination of the first biasing force and the second biasing force is greater than a pressure of a fluid in the inlet passageway, and wherein the nested biasing system includes a first spring having a first length, a second spring having a second length, and the second length is greater than the first length.
1 more element
Dependencies are inferred from the claim text.