Constant torque vehicle restraint
US8596949B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2009 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | May 12, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G69/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention is an impact vehicle restraint with a constant-torque, multi-mode electric motor to secure the ICC bar of a trailer to a loading dock. A mounting plate anchors a carriage to the front of the loading dock. The carriage is biased to a raised position and has a pair of spaced shear plates that house a hook. An electric gearmotor rotates the hook between retracted and extended positions. When extended, the hook secures and holds the ICC bar to the dock. The motor has a higher power level or mode to raise and lower the hook, and a lower power level or mode to continuously adjust the position of the hook and keep it in forced engagement with the ICC bar during the process of loading and unloading the trailer. A control system cycles the motor and hook through an operating cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.