Tailgate operating assembly
US6170916A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60P1/267
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tailgate operating assembly for a dump truck or dump trailer comprises a pair of hydraulic cylinders, one mounted horizontally on each opposite side wall of the cargo box adjacent the upper edge of the pivotally mounted tailgate, connected thereto by pivotal links for pivoting the tailgate toward its open position when the plungers of the hydraulic cylinders are extended and for pivoting the tailgate toward its closed position when the plungers are retracted. Each cylinder includes a pressure release mechanism to release internal pressure of each cylinder during retraction of the plungers and closure of the tailgate which enables the gravity weight of the tailgate to urge the plungers toward their retracted positions for more even and rapid movement of the tailgate to its fully closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.