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Pneumatic Pressure Amplifier

IP.com Disclosure Number: IPCOM000079142D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Bickford, JR: AUTHOR [+3]

Abstract

This amplifier utilizes a low-pressure pneumatic signal pressure supplied to tube 10, for controlling the application of a higher pneumatic supply from tube 12 onto a pneumatic-to-electronic transducer 14.

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Pneumatic Pressure Amplifier

This amplifier utilizes a low-pressure pneumatic signal pressure supplied to tube 10, for controlling the application of a higher pneumatic supply from tube 12 onto a pneumatic-to-electronic transducer 14.

The amplifier comprises valve bodies 16 and 18 having a diaphragn 20 of elastomeric material between them. The bodies 16 and 18 are formed to provide a cavity 22, and a circular ridge or seat 24 is provided in cavity 22. Ports 26 and 28 are located within ridge 24. Port 26 constitutes a restriction and is connected with the supply pressure tube 12, and port 28 is connected to transducer 14. A port 30 is provided at the top of cavity 22 and is connected to signal pressure tube 10.

When signal pressure is applied to tube 10, diaphragm 20 is forced down on seat 24 and supply air from tube 12, at a higher pressure than the signal pressure supplied to tube 10, is conducted from port 26 through port 28 to transducer 14.

When there is no signal pressure applied to tube 10, diaphragm 20 moves out of contact with seat 24 and supply pressure from tube 12 is exhausted to atmosphere through port 26. Port 26 is in the form of a restriction so as to limit the consumption of supply air from tube 12, and further to minimize the pressure to transducer 14 when there is no pressure signal applied to tube 10. The pressure to transducer 14, in the absence of a pressure signal on tube 10, is reduced to ambient pressure or below by the unique configuratio...