Browse Prior Art Database

Material Intrusion Sensor

IP.com Disclosure Number: IPCOM000088790D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Boyd, JR: AUTHOR [+2]

Abstract

Material protruding from a high speed rotating drum could severely damage any apparatus adjacent the drum.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Material Intrusion Sensor

Material protruding from a high speed rotating drum could severely damage any apparatus adjacent the drum.

A flexible flap 11 is placed near the surface of the drum and tensioned by means of spring 12 and straps or filaments 13. Any material protruding from the drum will impact flap 11. A slight force resulting from the impact perpendicular to the taut edge of the flap will produce a large force along the edge to actuate a switch 14. Actuation of switch 14 may signal an interrupt to turn off the drum 11 or to withdraw apparatus from positions adjacent the drum.

Release clips 15 may be provided to release at a specified force after the switch 14 is actuated, and may, as an example, be magnets. The release clips 15 may include the switch function 14. Release of the clips 15 can break electric continuity across the release clip, thereby stopping the machine. This can be accomplished with one release clip by having electric continuity cross and return through the clip junction, or with two clips by having electric continuity cross both clips and the flap 11.

Magnetic release clips may be used with a magnetically actuated switch, such as a reed relay, so that release of the magnet actuates the switch.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]