Remotely controlled electrically actuated air flow control register
US5364304A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Dec 17, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F13/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention relates to an air flow controllable register unit for controlling flow of air through the register from an air circulating system having a register air flow supply duct. The air flow is controlled in response to an externally provided control signal that commands the register flow control unit to provide differing air flow rates through the register. The register unit includes a register flow control apparatus which has a power generating device that includes a rotary mounted air turbine positioned within the register air flow supply duct. The air turbine is coupled to a generator to drive the same upon air flow against blades of the turbine. The air driven turbine initially restricts air flow of the register at system start-up. A blade pitch control device is coupled to the blades and is responsive to the air turbine rotary speed to cause the blades to rotate into an air flow restricting position when the air circulating system is at start-up with system air flow rates at a minimum and into a reduced air flow restriction position allowing higher air flow rates when the rotary turbine speed has increased. The register flow control apparatus is responsive to the extern…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.