Fastener with recessed head and head insert
US6302630A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B35/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastening device (10) including a fastener (20) and a recess insert (12) retained within the head (21) of the fastener (20). The fastener has a head (21) at one end and a threaded shaft (25) at the opposing end. The fastener head (21) has an engagement recess (22) and a concentric counter-bored section (28). The counter-bored section (28) has a greater diameter than the diameter of the engagement recess (22) and extends into the fastener head (21) less than the depth of the engagement recess. The counter-bored section includes an insert retainer (24). The recess insert (12) comprises a different material than the fastener (20). The insert (12) has a fastener retainer (18) and is adapted to fit within the fastener head (21) counter-bored section (28). The insert (12) has a head (13) with an aperture (14) for permitting access to the fastener engagement recess (22) therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.