Browse Prior Art Database

Hold Down Detector

IP.com Disclosure Number: IPCOM000053064D
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Gagne, M: AUTHOR [+2]

Abstract

This article describes an object detector and holder which not only detects the presence of an object but, if the object is present, will hold it in a fixed position while it is being processed. In this case it comprises a plate 10 to which there is affixed a hollow cavity housing 11 containing a spool 13 which has a hold-down extension 14 affixed thereto. The hold-down extension 14 passes through an opening 15 in the housing 11 so that it may contact and hold an object 16 which appears to be detected and held in a fixed position. The cover 10 is provided with port 17 which is connected to the interior of the housing 11. The spool 13 is provided with a small pass-through bleeder port 12 which extends through its entire length.

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Hold Down Detector

This article describes an object detector and holder which not only detects the presence of an object but, if the object is present, will hold it in a fixed position while it is being processed. In this case it comprises a plate 10 to which there is affixed a hollow cavity housing 11 containing a spool 13 which has a hold-down extension 14 affixed thereto. The hold-down extension 14 passes through an opening 15 in the housing 11 so that it may contact and hold an object 16 which appears to be detected and held in a fixed position. The cover 10 is provided with port 17 which is connected to the interior of the housing 11. The spool 13 is provided with a small pass-through bleeder port 12 which extends through its entire length.

The operation of the device is as follows: When the air pressure is turned on and passes through the air in lip 17 to the interior of the housing 11, the spool 13 is moved toward the distal end 18 of the housing 11, forcing the hold-down extension 14 out of the housing. If the unit 16 is present outside of the housing, the spool extension 14 contacts the unit and holds the unit in the fixed position by means of the air pressure entering the housing 11 via port 17. The bleeder port 12 maintains the air pressure in the cavity 20 created in back of the spool by the entrance of air through inlet 17. Thus, air continues to feed through the inlet into the chamber 20 and holds the spool against the unit. If no unit is present, t...