Seal for a dock leveler lip
US6654976B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G69/2876
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A dock leveler that includes a pivotal ramp with a moveable lip for loading and unloading a truck at a loading dock also includes a lip seal that helps seal an air gap along the side edges of the lip. When the back end of the truck is up against a dock bumper, the lip helps block off an air gap that spans an area generally defined by the rear edge of the truck, an inside edge of the bumper, and the side edge of the lip that generally faces the bumper. When the lip moves from its extended, operative position to its stored position, the lip forces the lip seal to move underneath the deck. The lip seal is biased to an operative, sealing position by a spring or a counterweight, so as the lip extends to its operative position, so does the lip seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.