Shipping dock hook
US4938648A · kind A · utility
16Cited by
24References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G69/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention provides a truck shipping dock hook system for locking a truck trailer by an ICC bar to a shipping dock. The system includes a hook pivotally mounted to the dock, a pressurized air source, a normally closed first solenoid valve connected with the air source, a tank containing a low temperature fluid connected with the first solenoid valve and a second solenoid valve, a vent connected with the second solenoid valve, and a hydraulic cylinder with a piston rod pivotally connected to the hook for powering the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.