Double locking snap hook
US4977647A · kind A · utility
44Cited by
25References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B45/026
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A double locking snap hook comprising a shank, a spring biased latch member and a spring biased locking means, the latch member and locking means being biased by two separate screens. One end of the shank defines a hook portion, and the latch member is biased toward a latched position for restraining straps, ropes, etc. within the hook portion. The locking means is biased toward a position which requires that the locking means be deactivated before the latch member may be unlatched or opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.