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Pneumatic To Electrical Transducers

IP.com Disclosure Number: IPCOM000093849D
Original Publication Date: 1966-Mar-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 85K

Publishing Venue

IBM

Related People

Boras, M: AUTHOR [+3]

Abstract

Diaphragm-type pneumatic actuators are substituted for an electromagnetic actuator in direct-operating and indirect-operating relays. Such arrangements provide rapid-response, pneumatic-to-electrical transducers in which impedance matching and amplification of pneumatic pressure or vacuum signals are not needed.

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Pneumatic To Electrical Transducers

Diaphragm-type pneumatic actuators are substituted for an electromagnetic actuator in direct-operating and indirect-operating relays. Such arrangements provide rapid-response, pneumatic-to-electrical transducers in which impedance matching and amplification of pneumatic pressure or vacuum signals are not needed.

Direct-operating transfer type relay in A has contact spring wire 1 that projects through elongated slot in actuator 2. Wire 1 is biased upward to normally connect normally-closed contact 3 with common contact 4. When pressure fluid is supplied at 5, it depresses flexible diaphragm 6 to cause 2 to push wire 1 from 3 and against normally-open contact 7 to connect 7 and 4.

The vacuum arrangement of this direct-operating relay is shown in B. Contact spring wire 1' is biased downward to normally connect normally closed contact 3' with 4'. With suction applied to vacuum port 5', diaphragm 6' acts through actuator 2' to pull wire 1' against normally-open contact 7' to connect 7' with 4'.

The indirect-operating, make-break relay in C has two U-shaped contact spring wires 10. When 11 is vented, inherent resilience of flexible diaphragm 12 retracts actuator 13, permitting 10 to connect terminals 14 and 15. When 11 is charged, 12 acts through 13 to push wire 10 away from 15 to break such connection.

The vacuum arrangement of this indirect-operating relay is shown in D. When 11' is vented, the slot in actuator 13' is long enough t...