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Circuit Module Pull Out Tool

IP.com Disclosure Number: IPCOM000088877D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Hoffarth, W: AUTHOR

Abstract

This tool serves to pull out circuit modules which are plugged by means of pins into bases, such as test bases on cards or boards, or which for repair purposes are to be soldered out of cards, without damaging the pins.

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Circuit Module Pull Out Tool

This tool serves to pull out circuit modules which are plugged by means of pins into bases, such as test bases on cards or boards, or which for repair purposes are to be soldered out of cards, without damaging the pins.

The tool is designed as a pair of tongs with two jaws 1a, 1b to each of which a handle 2a, 2b is fixed, and which are pivotably mounted in a block 3. Gripper springs 4a, 4b, actuated by nipples 1a', 1b' on jaws 1a, 1b, are screwed to both sides of block 3.

Bolts 5a, 5b are guided in jaws 1a, 1b. These bolts protrude into slots 3a, 3b extending concentrically to fulcrum 3' in block 3, as well as into slanted slots 6' of two lifting plates 6 which are vertically movable on both sides of block 3. In their inoperative position, gripper springs 4a, 4b and lifting plates 6 form a square or rectangle in such a manner that they embrace the outer edges of the module.

To withdraw a module from the base, the tool is vertically applied to the module, whereby gripper springs 4a, 4b are expanded under the effect of nipples 1a', 1b'. Against the tension of lifting spring 7 between handles 2a, 2b, the latter are pressed together, so that initially the bent portions of gripper springs 4a, 4b are moved under the module and, subsequently, as handles 2a, 2b are pressed tightly together, lifting plates 6 are moved downwards, with the module being parallely lifted from the base by means of the relative upward movement of gripper springs 4a,...