Pneumatic relay controlled transducer construction

Details Pneumatic relay controlled transducer construction Pneumatic relay controlled transducer construction

1981-05-20

1983-08-30

Harris, George

Automatic temperature and humidity regulation

Motors

Fluid-operated

335258, 236 87, G05D 2300

Patent

active

044012632

ABSTRACT:
An electrical current input to a pneumatic signal output transducer construction wherein the signal is substantially proportional to the current and is generated by a pneumatic relay of the construction that is controlled by an electrical current receiving unit of the construction, the current receiving unit comprising a fixed electrical coil that is adapted to have the current flow therethrough and a movable armature disposed in the coil and being operatively interconnected to the relay to control the relay in relation to the position of the armature relative to the coil.

REFERENCES:
patent: 2789543 (1957-04-01), Popowsky
patent: 3080878 (1963-03-01), Dustin et al.
patent: 3411704 (1968-11-01), Hilgert et al.
patent: 4194687 (1980-03-01), Scott
patent: 4286243 (1981-08-01), Bauer
Admitted Prior Art Transducer with a Fixed Permanent Magnet and Movable Coil.
Serial No. 080,573, filed Oct. 1, 1979.

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