Damper blade control
US4258877A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Aug 30, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/76
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A damper blade control for regularing the flow of conditioned air through a supply air duct and into a zone. The control comprises an electric motor for use with a source of electrical energy for moving the damper blade between a minimum air flow position and a maximum air flow position, and a thermostatic switch electrically positioned between the motor and the source of electrical energy for connecting the motor thereto to change the position of the damper blade in response to changes in the temperature of the zone. The control further comprises maximum and minimum flow switches disposed outside the supply air duct for disconnecting the motor from the source of electrical energy when the damper blade reaches, respectively, the maximum and minimum air flow positions. An indicator lever is located outside the supply air duct and supported thereby for movement in response to movement of the damper blade for indicating the position thereof, and the indicator lever actuates the maximum and minimum flow switches to disconnect the motor from the source of electrical energy when the damper blade reaches, respectively, the maximum and minimum air flow positions. Adjustable securing bracke…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.