Hinged edger housing improved internal debris guard and labyrinth perimeter seal
US6612376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Dec 1, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G3/062
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A housing assembly for a power edger that includes a housing and a door that is coupled to the housing and movable between an open position and a closed position. When positioned in the closed position, labyrinth seal members that are formed onto the housing and the door engage one another to form a labyrinth seal that inhibits dirt and debris from being expelled from the housing assembly. The housing assembly also includes a guard for shrouding a rotating blade. The guard includes a confronting portion having a leading end and a trailing end. The confronting portion is defined by an increasing radius relative to the rotary axis of the blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.