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Pin Retaining Method

IP.com Disclosure Number: IPCOM000082690D
Original Publication Date: 1975-Jan-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Bailey, EL: AUTHOR [+5]

Abstract

A part such as a type slug 3 is assembled on a belt or chain, not shown, by a pin 4. The flanges of type slug 3 are provided with cylindrical bores 5 and 6 which have a common axis. Bore 5 has a slightly smaller diameter than pin 4 while the diameter of bore 6 exceeds the diameter of the pin. Pin 4 is assembled to the type slug 3 by insertion through bore 6 as shown in Fig. 1 and into bore 5, as illustrated in Fig. 2, where a press fit retains the pin.

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Pin Retaining Method

A part such as a type slug 3 is assembled on a belt or chain, not shown, by a pin 4. The flanges of type slug 3 are provided with cylindrical bores 5 and 6 which have a common axis. Bore 5 has a slightly smaller diameter than pin 4 while the diameter of bore 6 exceeds the diameter of the pin. Pin 4 is assembled to the type slug 3 by insertion through bore 6 as shown in Fig. 1 and into bore 5, as illustrated in Fig. 2, where a press fit retains the pin.

With the type slug rotated 90 degrees counterclockwise from the position shown in Fig. 2 to present the axis of pin 4 in a vertical orientation, a liquid adhesive 9 is introduced into the bore 6 about the end of the pin 4. The adhesive applied at the chamfered surface 7 which facilitates entry, is carried into the volume of the bore 6 surrounding pin 4 by capillary action while chamfered surface 8, diverging from the pin surface creates a surface tension that impedes further adhesive flow.

In the assembled condition there is no relative motion between pin 4 and type slug 3 and the exposed pin surface is not scored, thereby eliminating stress concentrations and fretting corrosion between mating parts.

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