Turnable tightening device adapted to tighten and thereby facilitating screwing of a screw hook into a wall
US6230592A · kind A · utility
Inventor
Key dates
| Filing date | Oct 2, 2000 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Oct 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S81/901
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A turnable tightening device includes a stationary member having a lower end portion adapted to be actuated by a driving tool to turn about an axis, and an upper end portion with a slot of a dimension adapted to permit only a joining member of a screw hook to have access thereto. A movable member is disposed on the stationary member and is movable relative to the upper end portion longitudinally, and has a retaining groove formed away from the upper end portion and adapted to retain a hook body of the screw hook. A biasing member is disposed for biasing the movable member away from the upper end portion such that a shoulder portion of the screw hook abuts tightly against an upper wall of the upper end portion, and such that the hook body of the screw hook engages tightly the movable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.