Collapsible mandrel employing reinforced fluoroelastomeric bladder
US9096043B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2013 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Jan 25, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2827/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods of forming a collapsible mandrel are disclosed herein. An example method disclosed herein includes forming a layup on a substrate by providing a first layer of rubber, positioning a reinforcement strip on the first layer of rubber, providing first and second release films in spaced apart from each other adjacent the reinforcement strip to expose a portion of the reinforcement strip, providing a second layer of rubber overlying the exposed portion of the reinforcement strip, and laminating the first and second layers of rubber to the reinforcement strip. The release films to prevent the first and second layers of rubber from adhering to each other and the reinforcement strip such that non-adhered ends of the first and second layers of rubber and the reinforcement strip define flaps. The method includes placing the layup in a cavity of a mold forming part of a tool assembly, consolidating the layup when the layup is in the cavity of the mold, and curing the layup to form the collapsible mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.