Browse Prior Art Database

MST Retainer Insert/ Extract Device

IP.com Disclosure Number: IPCOM000049869D
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Bocinski, TE: AUTHOR [+2]

Abstract

MST (Monolithic System Technology) retainers, which are capable of retaining and aligning six tri-lead cables, are currently being plugged and unplugged with the use of pliers and the housings seated with the use of a pencil probe. This method is not positive and a great deal of flexing of the retainer occurs, and clearance for operation of the pliers is a problem.

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MST Retainer Insert/ Extract Device

MST (Monolithic System Technology) retainers, which are capable of retaining and aligning six tri-lead cables, are currently being plugged and unplugged with the use of pliers and the housings seated with the use of a pencil probe. This method is not positive and a great deal of flexing of the retainer occurs, and clearance for operation of the pliers is a problem.

The insert/extract device shown is a positive means for inserting and extracting the MST retainers and their cables simply and efficiently. The device incorporates a housing 1 with an affixed stationary plate 2 which interacts with a movable plate 3 which is activated by means of a cam lever 4. The cam lever 4 rotates slightly past 180 to create an over-center condition which locks the device in its actuated position. This actuated position holds the retainer and its cables in place to allow plugging and unplugging from a circuit board. Both pressure surfaces of the plates 2 and 3 are texturized to increase the gripping action of the device against the soft plastic retainer 5.

During use, the unactivated device with its open pressure plates is placed over the desired retainer and the cam lever 4 is rotated slightly past 180 degrees to its stop 8. This action moves the slidable plate 3 firmly against the retainer and holds the locked position, with the over center cam creating a pressure sufficient enough to hold the cam lever 4 against the stop 8. The tool is then pu...