Multiplexed hydraulic control system with oscillator for multiplexer drive
US5048394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Jul 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86501
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A multiplexed hydraulic control system in which high force margins for the multiplexer are achieved by employing hydraulic oscillators as the multiplexer driving means. The multiplexer is typically in the form of a hydraulic cylinder having an input port and a plurality of output ports, with an operator in the cylinder for individually connecting the input port to the output ports. The hydraulic oscillator is mechanically coupled to the multiplexer operator, and oscillation of the former causes oscillation of the latter to sequentially connect the input to each of the outputs. Various means are taught for initiating reversal of the oscillator and controlling the oscillation speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.