Current-to-pressure transducers
US4729398A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1987 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Jan 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2278
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a current-to-pressure (I/P) transducer which controls output pressures by rapidly and precisely venting pressures of fluid derived from a supply, the movable valve member employed in the venting comprises a mechanically-balanced low-mass armature suspended for restrained pivotal movements by a taut band and incorporating readily-saturated magnetic material disposed in gap-bridging relation to core elements of a stationary electromagnet; the counterbalancing and taut-band suspension of but a small mass renders the armature highly resistant to adverse effects of vibration, and selectable positioning of the venting-valve seat or port to cooperate with one or the other end of the pivoted armature allows for direct or inverse responses to currents fed to the electromagnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.