Straddling plug
US4861206A · kind A · utility
22Cited by
15References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B13/124
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plastic straddling or expansion plug having a closed plug neck and a closed plug foot both with a longitudinal aperture into which a screw can cut a thread. The plug includes a shank having a thin plug jacket on which a two-flight helix is integrally formed. In the region between the helices, the plug jacket is provided with longitudinal slits. On the outside of the helix, further ribs are provided which each extend over a 180.degree. arc and are integrally formed with the helix, alternating in orientation by a 90.degree. angle. The plug neck includes flange lugs oriented in the shape of a cross and adapted to be folded over.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.