Safety locking device having a rocking hook
US5257840A · kind A · utility
24Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Sep 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The locking device comprises a first hook cantilevered out from a rocking pin to support a catch member and bearing against a retractable locking member that opposes rocking movement of the first hook, and a second hook adjacent to the first hook and associated therewith by a link member so that when the first hook is closed, the second hook is kept in a position close to a position in which the second hook supports the catch member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.