Patent · US Expired

Concentric finger jointed timber

US6537625B2 · kind B2 · utility

3Cited by

9References

11Claims

0Family size

Assignee

The United States of America, as represented by the Secretary of Agriculture · US

Inventors

Dwight Flach · Madison, US
Roland Hernandez · Chicago, US

Key dates

Filing date	Jun 8, 2001
Grant date	Mar 25, 2003
Priority date	—
Expiry date	Jul 27, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/195
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A finger joint for connecting first and second wooden segments includes intermeshing fingers that are concentrically disposed about the center of the end face of the two wooden segments. The fingers may either be independent round protrusions forming recesses therebetween operable to receive the fingers of a corresponding wooden segment to be joined, or may alternatively comprise a spiral shaped protrusion defining a corresponding recess sized to receive the spiral shaped protrusion of the corresponding wooden segment to be joined.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.