Control system

Details Control system Control system

1987-07-27

1989-02-21

Joyce, Harold

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

1374875, 13762411, 137594, 236 1B, 34082506, 165 22, F24F 1100

Patent

active

048055190

ABSTRACT:
A system for controlling the operation of a plurality of dampers serving ventilation apertures in the structure of a building, which system comprises a plurality of actuators, one or more to be associated with each damper and to actuate the damper between an open and a closed position; the actuators incorporating means for receiving a signal from a controller, for identifying that that signal contains instructions relevant to the damper which that actuator actuates; the plurality of actuators being adapted to be connected in series with the controller via a single connecting cable.

REFERENCES:
patent: 3699989 (1972-10-01), O'Connor et al.
patent: 4019172 (1977-04-01), Srodes
patent: 4410883 (1983-10-01), Swiston, Sr.
patent: 4468655 (1984-08-01), Iwata
patent: 4574283 (1986-03-01), Arakawa et al.
patent: 4679045 (1987-07-01), Sadamori et al.

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