Differential pitch threaded fastener, and assembly
US4603889A · kind A · utility
51Cited by
9References
8Claims
0Family size
Inventor
Key dates
| Filing date | Aug 1, 1983 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Aug 1, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B31/028
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded fastener having an axis adapted to thread connect to two bodies for holding such bodies in fastened condition, one body having one thread and another body having another thread, PA0 the fastener comprising PA0 (a) threading having first and second load flanks which face axially oppositely, PA0 (b) said first flank defining a first pitch, and said second flank defining a second pitch, said pitches being different and characterized in that when said fastener is screwed onto body threads said first flank tightens against said one body thread when said second flank tightens against said other body thread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.