Browse Prior Art Database

Retaining Screw Fastener

IP.com Disclosure Number: IPCOM000060783D
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Babcock, RF: AUTHOR [+2]

Abstract

Coaxial or twinaxial box 10 (Fig. 1) is held to I/O panel 15 by thumbscrew 20 so that male connector pins 25 engage with female connector 30. Box 10 has a slot 35 molded therein which engages I/O panel 15. I/O panel 15 is attached to power supply 40. Normally the I/O panel 15 is provided with an extruded tapped hole for receiving the threads of thumbscrew 20 which is captive in box 10. Standard manufacturing techniques, however, cannot hold the orientation of the extruded pole to the I/O panel to ensure alignment whereby the plastic thumbscrew 20 was caused to bend as the threads engaged. To eliminate this problem, two tabs 16 and 17 are formed from the I/O panel 15 with an angled profile, as in Fig.

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Retaining Screw Fastener

Coaxial or twinaxial box 10 (Fig. 1) is held to I/O panel 15 by thumbscrew 20 so that male connector pins 25 engage with female connector 30. Box 10 has a slot 35 molded therein which engages I/O panel 15. I/O panel 15 is attached to power supply 40. Normally the I/O panel 15 is provided with an extruded tapped hole for receiving the threads of thumbscrew 20 which is captive in box 10. Standard manufacturing techniques, however, cannot hold the orientation of the extruded pole to the I/O panel to ensure alignment whereby the plastic thumbscrew 20 was caused to bend as the threads engaged. To eliminate this problem, two tabs 16 and 17 are formed from the I/O panel 15 with an angled profile, as in Fig. 2, and offset one half the thread pitch to mate with the slope of the thread on the thumbscrew 20, the thread being a modified acme profile. Tabs 16 and 17 are spaced so as not to contact the root diameter of thumbscrew 20 to allow box 10 to float within the confines of slot 35.

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