Sheet metal nut
US4169630A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1978 |
| Grant date | Oct 2, 1979 |
| Priority date | — |
| Expiry date | Mar 2, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B37/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A one-piece sheet metal nut particularly adapted to be clamped against a plastic workpiece to accommodate any cold flow of the plastic under the clamping force without appreciably reducing the tension in the joint thus created. The nut incorporates an inner internally threaded body integrally connected by an upper top wall to an outer body. The lower region of the outer body is frustoconical and adapted to engage a mating frustoconical surface in the plastic with the uppermost extremities of the nut incorporating an axially compressible spring means permitting portions of the sheet metal nut to move longitudinally relative to one another, which, in conjunction with the broad surface contact between frustoconical surfaces, overcomes any cold flow effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.