Self-sealing fasteners

US8092128B1 · kind B1 · utility

Inventors

• Alan V. Bray · Austin, US
• Denise Dama Deppe · Austin, US
• Gary Schmidt · Palm Springs, US
• John Lee Massingill · San Marcos, US
• Clois E. Powell · Seguin, US
• Pulinkumar Navinbhai Patel · San Marcos, US
• Vijaykumar M. Mannari · Saline, US

Key dates

• Filing date: Feb 20, 2008
• Grant date: Jan 10, 2012
• Expiry date: Feb 22, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B2200/95
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A fastener suitable for use in airplane manufacture or repair that is coated with a pre-mixed moisture cure sealant. The sealant layer is coated with a frangible moisture barrier that will break apart when the fastener is installed, thus exposing the sealant to atmospheric moisture. Once exposed to moisture, the sealant will begin to cure. Preferred embodiments also provide a moisture indicator that provides a visual indication that the outer moisture resistant layer has been damaged.