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Browse Prior Art Database

Self Locking Fluid Sensing Station

IP.com Disclosure Number: IPCOM000096599D
Original Publication Date: 1963-Aug-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Mitchell, AE: AUTHOR [+2]

Abstract

The air-operated sensing station has a Venturi, nozzle-shaped sensing channel 11, a monostable fluid amplifier 12 and a bistable fluid amplifier 13. These are connected in a latch-type manner. When sensing opening 14 is mechanically closed, e. g., by manual operation, the device assumes its latched position. In this self-locking state it does not react to further input manipulations until it is released by application of a reset pulse.

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Self Locking Fluid Sensing Station

The air-operated sensing station has a Venturi, nozzle-shaped sensing channel 11, a monostable fluid amplifier 12 and a bistable fluid amplifier 13. These are connected in a latch-type manner. When sensing opening 14 is mechanically closed, e. g., by manual operation, the device assumes its latched position. In this self-locking state it does not react to further input manipulations until it is released by application of a reset pulse.

In the rest position, the jet streams of both amplifiers 12 and 13 are diverted to the left. Jet stream 15 assumes its monostable position and exhausts into the open air through outlet 16. Jet stream 17 indicates the rest position 0 and passes through lead 18 and sensing channel 11 into the free atmosphere.

Short-term closing of opening 14 causes a pressure rise in channel 11 which continues in lead 19 and ultimately controls amplifier 12. Jet stream 15 is temporarily switched to outlet 20 for a single-shot which is picked up at terminal
21. The same pulse, via lead 22, controls amplifier 13. Jet stream 17 is switched to outlet 23 and so indicates the self-locking state 1 of the latch. A steady-state output signal is available at terminal 24 as long as the device is in its latched position. The rest position 0 is re-established by application of a reset pulse to terminal 25. Then, jet stream 17 is switched back into its left position.

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