Screw with unthreaded portion formed for absorbing bending loads
US5433570A · kind A · utility
27Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1994 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Jan 13, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B25/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A screw has an elongated shank and a head. The shank has two threaded portions and at least one unthreaded portion extending therebetween. A plurality of axially spaced grooves formed by the removal of material from the unthreaded portion of the shank are provided therein to enable the screw to withstand transverse forces acting on the head when the screw is screwed in.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.