Bi-directional air flow damper having uni-directional synchronous motor
US7140593B2 · kind B2 · utility
5Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jun 2, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2013/1473
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A damper assembly that produces bi-directional damper door movement from a single-direction motor is provided. Bi-directional rotation of the damper door is enabled by a cam slot on an end of the damper door that is engaged by a motor-driven drive cam having a drive pin extending into the cam slot. As the single-direction motor collectively rotates the drive cam and the drive pin, the drive pin reciprocates within the cam slot. This causes sealing flanges and the damper from the damper door to alternatively engage under a positive pressure and disengage from one another as the damper door is rotated bi-directionally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.