Rock trap sump door latch
US5882257A · kind A · utility
7Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Sep 23, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01F12/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rock trap sump assembly includes a rock trap sump having an opening through which rocks may be ejected, a door pivotally supported adjacent to the opening, a latch arm pivotally coupled to the rock trap sump about a first axis and a link pivotally coupled to the door about a second axis and pivotally coupled to the latch arm about a third axis. The latch arm pivots about the first axis to move the door between a first closed position in which the door closes the opening and a second opened position in which the door pivots away from the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.