Pressure control valve having intrinsic mechanical feedback system
US7284471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2005 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Dec 1, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/565
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and system for controlling the dynamics of an actuatable load functioning or operable within a servo or servo-type system, wherein the dynamics of the load are controlled by way of a unique pressure control valve configured to provide intrinsic pressure regulation. The pressure control valve comprises dual spools physically independent of one another and freely supported in a valve body to regulate the pressures acting within the overall system between the control or pilot pressure and the load or load pressure. The dual spools of the pressure control valve, although physically independent of one another, function in cooperation with one another in an attempt to maintain a state of equilibrium in the system, namely to keep pressure acting on or within the actuator (the load pressure), or the feedback force corresponding to the load pressure, the same as the control or pilot pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.