Double locking safety snap
US4539732A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1984 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Jan 30, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B45/026
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A double lock safety hook adapted to a single lock hook permitting a belt connection, such as a fall protection device, window washer's harness, and the like, to be retained within a hook throat. A snap keeper is engageable with the latch member to lock the latch member with the latch member abutting the hook nose so that accidental release of the belt connection is reduced. The snap keeper is mounted along and in juxtaposition to the shank of the single lock hook and is easily installed on equipment without the necessity of drilling holes in the hook body. A means for positioning the keeper along the shank is also provided for moving the keeper between its first and second positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.