Magneto-pneumatic timing device

Details Magneto-pneumatic timing device Magneto-pneumatic timing device

1992-12-22

1993-11-30

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

13762414, 251 65, G05D 1606

Patent

active

052656390

ABSTRACT:
A magneto-pneumatic timing device is disclosed that provides a pressure signal alternating between a high and a low pressure output signal. The duty cycle may be varied as well as the overall cycle time. A magnetically biased flexible diaphragm divides a chamber into a pair of subchambers and the differential pressure between the subchambers is controlled to cause the flexible diaphragm to pull away from the magnetic bias to one position and to return to its biased position. Control of the output pressure signal is carried out by varying the resistance in certain of the pneumatic passages that are part of the control function for the differential pressure. The device is relatively simple and inexpensive to construct and features very few moving parts, thus it is reliable and capable of high production, low cost manufacture.

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