Dual protection inner seal washer for electromagnetic effects (EME) fasteners
US10587107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2017 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Jan 30, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D45/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dual protection inner seal washer employs a radially outward metallic portion having a dielectric coating and a radially inward polymeric portion engaging the metallic portion at an interface with an interference fit. The polymeric portion has at least one tapering compression surface to engage a surface of a structure proximate a hole and further has a fastener element contact surface to engage a mating surface on a fastener system element. Torqueing of the fastener element compresses the at least one compression surface inducing a predetermined pressure in the polymeric portion in a joint created by the fastener element and structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.