Loading dock signal and control system
US4692755A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1985 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Feb 22, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G69/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A signal and control system is provided in which signal lights are provided on the inside and outside of a dock facility to give dock personnel and truck drivers clearly visible indications of when it is safe or unsafe to load or unload a truck or to park to remove a truck, dependent upon the condition of switches on the inside which are accessible to dock personnel and to the condition of a locking device on the outside which is engageable with the safety bar of a truck. A slip clutch and a position sensor cooperate to control and avoid adverse effects of slippage in the locking device, a horn is energized to provide a loud audible warning of dangerous conditions, a key pad is used to enter a security code and other features are provided for increased safety and reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.