Helicopter cargo hook
US4678219A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | May 14, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C1/34
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A releasable self-resetting cargo hook for helicopters and other aircraft for supporting suspended loads. The cargo hook apparatus includes a pivotally supported load arm maintained in its load supporting condition by a pivotally mounted latch arm whose position, in turn, is controlled by a pivotally mounted latch. The position of the latch is determined by a pivotally mounted lock arm lever whose normal position is determined by a stop pin and which is operated by a release mechanism. The interconnection between the latch and lock arm lever is through a cam slot defined on the latch receiving a lock arm lever follower, and the cam slot-follower relationship prevents impact forces imposed on the cargo hook structure from inadvertently producing lock arm lever rotation and latch movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.