Method for constructing an inflatable mandrel
US5259901A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1992 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | May 27, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0046
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for constructing an inflatable elastomer mandrel for use in fabricating composite articles is provided. The method comprises the steps of preparing a rigid, water soluble mandrel to the desired size and shape with a shaft extending therethrough; applying a mold releasing ply to the water soluble mandrel; applying a first layer of uncured elastomer to cover the water soluble mandrel; curing the first layer of elastomer to form a base layer for a work piece mandrel wherein the work piece mandrel initially comprises the cured layer of elastomer disposed about the water soluble mandrel; applying a second layer of uncured elastomer to cover the work piece mandrel; winding a fiber onto the work piece mandrel; applying a third layer of uncured elastomer to cover the winding of the fiber of the work piece mandrel; winding a second fiber onto the third layer of elastomer of the work piece mandrel; applying a fourth layer of uncured elastomer to cover the winding of the second fiber of the work piece mandrel; curing the layers of elastomer having been applied to the work piece mandrel; and dissolving the water soluble mandrel and removing the shaft from the work piece mandrel. The w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.