Browse Prior Art Database

Coated Moving Part and Installation Method

IP.com Disclosure Number: IPCOM000092612D
Original Publication Date: 1966-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 21K

Publishing Venue

IBM

Related People

Pencsak, RJ: AUTHOR

Abstract

The drawing is an exploded perspective view showing a part 1. The latter is coated on one side with perfluorohydrocarbon resin in a position to be held between yokes 3 and 5 in a mechanical assembly. Threaded bolt 7 passes through yoke 3, hole 9, and yoke 5. The elements are held firmly together by nut 11.

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Coated Moving Part and Installation Method

The drawing is an exploded perspective view showing a part 1. The latter is coated on one side with perfluorohydrocarbon resin in a position to be held between yokes 3 and 5 in a mechanical assembly. Threaded bolt 7 passes through yoke 3, hole 9, and yoke 5. The elements are held firmly together by nut
11.

Part 1 is to pivot on bolt 7 and thus be a moving part in the final assembly. Since part 1 is to be a moving part, yokes 3 and 5 are not tightened so much as to impede free movement. On the other hand, accurate positioning in the mechanism is lost if yokes 3 and 5 are too greatly separated.

One side of part 1 which will face either yoke 3 or yoke 5 is coated with a 2/10,000 inch thick layer of TEFLON* perfluorohydrocarbon resin No. 850-201, a product of E. I. du Pont de Nemours and Co. The No.850-201 is sold as a solution. The latter is sprayed onto part 1, and then part 1 is baked at 300 Degrees F. Other perfluorohydrocarbon solutions are available, but some of them are generally unsatisfactory because they must be baked at a temperature so high as to heat-treat the part 1.

During assembly hole 9 of part 1 is manually positioned between the holes of yokes 3 and 5. Bolt 7 is passed through these holes and nut 5 is tightened down firmly, thus drawing yokes 3 and 5 into physical contact with the sides of part 1. Part 1 is then manually rotated back and forth around bolt 7. The resin coating is soon worn away. This leaves...