Eccentric adjusting apparatus for a tree spade
US5129336A · kind A · utility
6Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Jun 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S403/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An eccentric adjusting apparatus for a tree spade which includes a plurality of blades mounted for upward and downward movement on mounting blocks which travel in longitudinal channels of an associated plurality of upright towers. A pair of eccentric pins are used to mount the blades to the mounting blocks. Pivotal movement of the eccentric pins permits quick and easy adjustment of the blades to assist in maintaining the desired alignment of the blades along their adjoining edges and at a common vertex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.