Progressive linkage for excavator thumb
US7818901B2 · kind B2 · utility
15Cited by
24References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Aug 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S37/903
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved dipper stick, tool, and thumb combination includes a progressive linkage for connecting the thumb to a thumb actuator wherein the pivot axis of the thumb idler link connection is spaced from the pivot axis of the tool idler link connection. The pivot axis of the thumb idler link connection may be offset outwardly from the inner surface of the dipper stick. A mounting plate may be connected to the inner surface of the dipper stick to locate the pivot axis in the offset position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.