Browse Prior Art Database

Dust Free Sensing

IP.com Disclosure Number: IPCOM000076006D
Original Publication Date: 1971-Dec-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Brinson, PR: AUTHOR

Abstract

A passage 5 has an outlet 6 that directs a jet of air across an article path, defined by wall surfaces 7 and 8, into a receiving chamber 9. Chamber 9 has a restricted outlet 11 aligned with the path of travel of air through the chamber and an outlet 12 communicating with the chamber perpendicular to the path of air travel. Outlet 12 is connected through a receiver tube 13 to sensing apparatus 14.

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Dust Free Sensing

A passage 5 has an outlet 6 that directs a jet of air across an article path, defined by wall surfaces 7 and 8, into a receiving chamber 9. Chamber 9 has a restricted outlet 11 aligned with the path of travel of air through the chamber and an outlet 12 communicating with the chamber perpendicular to the path of air travel. Outlet 12 is connected through a receiver tube 13 to sensing apparatus
14.

When the air jet from outlet 6 is not interrupted by an article between walls 7 and 8, an elevated pressure in chamber 9 is indicated by sensing apparatus 14 and conversely when an article interrupts the flow of air to chamber 9, sensing apparatus 14 indicates the reduction of pressure. Dust particles that may occasionally be entrained in the air entering chamber 9 will be driven through outlet opening 11, rather than accumulating in outlet 12 that communicates with sensing apparatus 14.

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