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US 9,908,301 B2Granted
Method and arrangement for treatment of liner sleeve
AssigneePicote Oy Ltd
InventorMika Lokkinen
Life of this patent
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Abstract
A method for preparing a resizing sleeve for lining a joining point in a pipe assembly having pipes of thicker and thinner diameter. The method includes stretching the resizing sleeve in diameter to the size of the thicker pipe in diameter of the pipe assembly, installing an installation hat according to the thicker pipe in diameter of the pipe assembly by airtightly gluing it onto the stretched resizing sleeve, and returning the resizing sleeve to the size of the thinner pipe in diameter of the pipe assembly to be lined. A suitable tool for implementing the method is also disclosed.
Claims5
A liner assembly comprising:
- a resizing sleeve which is a stretching sleeve having an unstretched state having a smaller diameter and a stretched state having a larger diameter;
- and
- an installation hat which is made of flexible and inelastic material and having a diameter essentially matching the diameter of the resizing sleeve in the stretched state,
- wherein the installation hat is removably attached to the resizing sleeve in an airtight manner at an oblique angle in relation to a perpendicular cross-section of the resizing sleeve.
1 more element
Dependencies are inferred from the claim text.