HVAC actuator with light indicator
US9423143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Feb 23, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2140/40
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An HVAC actuator includes an output shaft rotatable between first and second end positions and a drive mechanism to selectively drive the output shaft toward the first end position. The actuator may include a light source within its housing and a window to provide visibility of the light from the light source to an observer. An aperture member may be situated between the light source and the window and be configured to move as the output shaft is rotated. The aperture member may have spaced openings that transmit the light to the window at a plurality of positions of the output shaft such that the aperture member may cause the appearance of blinking of the light through the window as the output shaft is rotated toward the first end position. One of the openings may be configured to be in registration with the light source at the first end position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.