Self-contained breathing apparatus facepiece pressure control method
US7373943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2006 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Aug 28, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7761
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electro mechanically-assisted control system for use in a second-stage regulator. Regulator control assembly (20′), also referred to as all-electronic (AE) assembly (20′), includes an electromechanical actuator (EMA) sub-assembly (22) for controlling airflow through single air supply line (23). EMA sub-assembly (22) includes electronically controllable actuator (ECA) (34), which removably seals EMA orifice (36) in wall (30) of pilot chamber (32). ECA (34) is electrically connected with and controlled by control electronics (38). The control electronics include programmable microprocessor (40), which is electrically connected with charge and discharge electronics (42), both of which are electrically connected with power supply (44). All-electronic (AE) assembly (20′) has only an EMA sub-assembly and no mechanical actuator sub-assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.