Planar coil and support for actuator of fluid mover
US10077768B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2015 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Apr 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid mover includes a chamber with one or more outlet openings, first and/or second fluidic diaphragm(s) having a portion movable in the chamber to cause fluid to move at the outlet opening, and a coil assembly magnetically coupled to the fluidic diaphragm to move the movable portion of the fluidic diaphragm(s) in response to a current in the coil. The coil assembly includes a coil with an opening, and a plug may be positioned in the opening and/or a support may be positioned around a periphery of the coil. The plug and/or the support may have a magnetic permeability greater than one and be arranged so magnetic field lines created by the coil pass through the plug and/or support. The coil, plug and/or support may define a flat surface, e.g., such that a uniform gap is present between the diaphragm(s) and the coil, plug and/or support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.