Browse Prior Art Database

Bolt Torquing Tool

IP.com Disclosure Number: IPCOM000107911D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 1 page(s) / 40K

Publishing Venue

IBM

Related People

Kehley, G: AUTHOR [+3]

Abstract

The design of certain high-powered computer circuit boards requires the direct attachment of power buses, with the use of bolts. The bus attachment is made to components that have been surface soldered to the circuit board. In the process of torquing the bolts to the proper specification, using commercially available tools, it is desirable to minimize the shear stress delivered to the solder joint during the bolt tightening process. (Image Omitted)

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Bolt Torquing Tool

      The design of certain high-powered computer circuit boards
requires the direct attachment of power buses, with the use of bolts.
The bus attachment is made to components that have been surface
soldered to the circuit board.  In the process of torquing the bolts
to the proper specification, using commercially available tools, it
is desirable to minimize the shear stress delivered to the solder
joint during the bolt tightening process.

                            (Image Omitted)

      This tool has been designed to eliminate the stress placed on
the solder joint, by reducing the applied torque to the solder joint
while still applying the specified torque to the bolt.

      This has been accomplished by designing the torque tool so that
the jaw components of the tool are intimate with the surface soldered
component.  When a clockwise torque is delivered from the spring
loaded drive (2), it is cancelled by a resisting counterclockwise
force from the torque driver jaws (3), thus reducing the stress to
the solder joint.

      Disclosed anonymously.