Fastener systems and methods for joining multiple substrates of workpiece
US12247609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2023 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Jul 19, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B19/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener system for joining substrates of a workpiece with working and blind sides includes a nut member, a sleeve member and a bolt member. The nut member includes a nut bore with internal threads. The nut member is placed with the nut bore over a joining bore through the substrates on the blind side. The sleeve member includes an outer sleeve surface with a lubricious coating. The sleeve member is inserted in the joining bore from the working side. The bolt member includes a head portion, a threaded portion and a shank portion. The bolt member is inserted in a central bore of the sleeve member. The threaded portion engages with the internal threads of the nut member. As the bolt member becomes fully engaged, the shank portion causes radial expansion of the sleeve member, and the sleeve member provides an interference fit within the joining bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.