Tree fastener with split wings
US5907891A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1998 |
| Grant date | Jun 1, 1999 |
| Priority date | — |
| Expiry date | Feb 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/42
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The tree fastener includes a shank, a head and wings on first and second opposed sides of the shank. The wings are split along the tool parting line into wing portions which extend from the shank at different angles so that the spacing between wing portions is one half the distance between successive wings. Additionally, the wing portions are diagonally paired so that wing portions on a first opposed side of the shank and a first side of the tool parting line extend from the shank at the same angle as wing portions on a second opposed side of the shank and a second side of the tool parting line. Likewise, wing portions on a second side of the shank and a first side of the tool parting line extend from the shank at the same angle as wing portions on a first side of the shank and a second side of the tool parting line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.