Two-by-four corner members
US4885883A · kind A · utility
Inventor
Key dates
| Filing date | Feb 25, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/347
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Corner joiner units for connecting standard two-by-four lumber and the manner of making structures from these is depicted. The corner units are of plastic and have two horizontal sleeves for receiving horizontal two-by-fours and at least one vertical sleeve for receiving the butt end of a vertical two-by-four. The plastic unit includes internal walls and internal openings between the sleeves, so that each two-by-four received in the horizontal sleeves is in direct wood-to-wood contact with approximately half of the butt surface of the vertical two-by-four, so as to directly transfer vertical forces there between, without the joiner unit being subject to such vertical forces. Several variations of such joiner units are disclosed for different types of corners, as is a framework made from such members and two-by-fours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.