Laminated internally threaded fastener
US5785477A · kind A · utility
30Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Nov 7, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B33/006
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An internally threaded fastener assembled from formed laminae can be inexpensively and efficiently produced from a variety of materials in a multi-staged, die-operated, drawing press. Each lamina has an internal bore with less than one full thread form at the helix plane and is designed to be stacked in an aligned, alternating arrangement to provide full thread rotations along the interior of the assembled fastener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.