Apparatus for positioning a work implement
US5018431A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1988 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Dec 9, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87217
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus for positioning a work implement in predetermined operative attitudes, including a valve body mounting a piston which is operable for movement through a range of selective operative positions, and which is further connected to the work implement; a pair of pulse valves mounted on the valve body and connected in fluid communication with the piston and operable selectively to supply a source of hydraulic pressure to the valve body; and an actuator is connected in signal transmitting relation to the pair of pulse valves and is adapted selectively to actuate same thereby causing the selective release of hydraulic pressure to position the piston, and thus the work implement in a selected operable attitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.