Attachment unit including nail and sleeve
US4802802A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1988 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Mar 7, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B43/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An attachment unit is made up of a nail and a sleeve fitted onto the nail. The nail has an axially elongated shank with a head at one end. The sleeve has a first axially extending section followed by a second axially extending section with the second section located closer to the head. A flange is located at the end of the first sleeve section spaced from the second sleeve section. An exterior thread with a root diameter is formed on the first sleeve section. The second sleeve section has a outside diameter smaller than the root diameter of the thread. When the nail is driven into a receiving material, its head runs into and laterally deforms the second sleeve section. After the nail is driven in, a nut can be placed over the second sleeve section and threaded onto the exterior thread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.