Screw grommet having a secured internal thread member
US5173025A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Dec 26, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B37/043
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A screw grommet with which an externally threaded member is threadedly engaged in a state in which the screw grommet is inserted through an attaching hole formed in a member to which the screw grommet is to be attached. An externally threaded member is passed through a head having a through hole, and the head abuts against the member to which the screw grommet is to be attached. The externally threaded member is then inserted through a leg which projects from the head and is inserted through the member to which the screw grommet is to be attached. The externally threaded member is threadedly engaged with an internal thread member. A pair of pawls are formed on a part of the internal thread member and are, together with the internal thread member, inserted in the leg in a state in which the diameter of the pawls is reduced. When the internal thread member approaches the head, the diameter of the pawls is enlarged in such a manner as to clamp the member to which the screw grommet is to be attached. When the internal thread member is moved away from the head, the diameter of the pawls is reduced so as to allow passage of the pawls through the attaching hole formed in the member to whi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.