Boom-stick adapter for two-piece boom
US4029225A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Apr 16, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/963
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A material handling apparatus having a stub boom provided with structure for connecting a fore boom thereto to form a two-piece boom, structure for selectively swingably positioning the stub boom, a work implement, and an improved joint structure for swingably connecting the work implement to the stub boom. The improved joint is defined by an adapter having a mounting portion and a joint portion swingably interconnected. Mounting structure is provided for cooperating with the stub boom connecting structure for mounting the adapter mounting portion to the stub boom, and mounting structure is provided for mounting the work implement to the joint portion of the adapter. A positioner is provided for selectively swingably positioning the joint portion of the adapter for correspondingly selectively positioning the work implement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.