Block and locking mechanism for a stump grinding cutter bit and method of securing and retaining
US5005622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1990 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Feb 16, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G23/067
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A block and locking mechanism and cutter bit for a stump grinding machine. The block having a shank receiving cavity being defined by a surrounding irregularly shaped inner wall that includes a pair of opposed end walls interconnected by a pair of opposed side walls with each side wall being tapered inwardly from the opposed end walls such that the cavity has a varying width from end wall to end wall. The cutter bit including a shank adapted to be received within the cavity of the block with the shank having a cross-section that generally conforms to the shape of the cavity such that the cutter bit is prevented from rotating when inserted within the cavity and held within the block. The cutter bit and block also include, respectively, retaining notches formed on opposite sides of the cutter bit shank and angled set screws disposed within set screw bores formed in the block and adapted to extend into engagement with the respective retaining notches formed on opposite sides of the shank so as to retain the shank within the block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.