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Star Washer Fasteners

IP.com Disclosure Number: IPCOM000043693D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Ansell, DF: AUTHOR [+4]

Abstract

Various types of star washers are described for providing low resistance grounding as well as the securing of surfaces together. Figs. 1 through 5 show five different types of star washers which can be held in place by themselves, without intervention of an assembler. This reduces assembly time as well as simplifies the assembly procedures. The star washer 10, as shown in Fig. 1, is a rivet type. The star washer is secured to the metal surface during the riveting operation 12. An alternate approach 14 shows the use of a snap-in or pressed-in star washer. Fig. 2 shows the use of a star washer clip nut. The washer 16 is clipped onto surface 18 and held securely by means of spring leaf 20, preventing slippage during assembly or removal of the holding screw 22 The screw 22 screws into the shaped portion 24 of the leaf 20.

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Star Washer Fasteners

Various types of star washers are described for providing low resistance grounding as well as the securing of surfaces together. Figs. 1 through 5 show five different types of star washers which can be held in place by themselves, without intervention of an assembler. This reduces assembly time as well as simplifies the assembly procedures. The star washer 10, as shown in Fig. 1, is a rivet type. The star washer is secured to the metal surface during the riveting operation 12. An alternate approach 14 shows the use of a snap-in or pressed-in star washer. Fig. 2 shows the use of a star washer clip nut. The washer 16 is clipped onto surface 18 and held securely by means of spring leaf 20, preventing slippage during assembly or removal of the holding screw 22 The screw 22 screws into the shaped portion 24 of the leaf 20. The star washer in Fig. 3 differs from the star washer in Fig. 2 in that the clip leaf does not have screw-holding abilities. It is used in either position 25 or 26. The star washer in Fig. 4 utilizes a knurled shank 28 to serve as a pressed-fit function, retaining the washer at the surface until the screw 22 is threaded into bracket 29. The captive-type star washer in Fig. 5 is commonly used in panel-type mountings. The washer 30 is placed onto the surface and then riveted or staked securely at 32.

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