Patent · US Active

Particle board screw

US8662809B2 · kind B2 · utility

0Cited by

11References

13Claims

0Family size

Assignees

SWG SCHRAUBENWERK GAISBACH GMBH · DE
WUERTH INTERNATIONAL AG · CH

Inventor

Andreas Wunderlich · Wenzenbach, DE

Key dates

Filing date	May 6, 2008
Grant date	Mar 4, 2014
Priority date	—
Expiry date	Oct 7, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16B25/10
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a particle board screw having a conical screw tip with a thread. The thread extends from the screw shaft to the front end of the screw tip. In order to make it easier to screw in, and in order to reduce the splitting effect in wood, a shoulder or rib is disposed in the front region of the screw, which is to say on the end or inside of the tapering part, preferably extending around the entire circumference with no pitch. The rib has a front flank running almost transversely to the longitudinal axis of the screw and a more strongly inclined rear flank. The screw has a reduced screw-in torque.

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