Pit lid counterweight assembly
US5673810A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1994 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Aug 1, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/146
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A counterweight assembly for a container lid that allows for control over the operating characteristics of the lid during opening and closing. The counterweight assembly is preferably used with a container having one or more walls, a floor, and a lid positioned on top of the walls, the lid being rotatable about a horizontal hinge axis. The counterweight assembly includes a counterweight, and a coupling arm rotatable about a counterweight axis that is located within the container. The counterweight is connected to one end of the coupling arm. The other end of the coupling arm exerts a force against the downward facing surface of the lid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.