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Snap Fastener for Blind Installations

IP.com Disclosure Number: IPCOM000039581D
Original Publication Date: 1987-Jul-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Kresge, JS: AUTHOR [+2]

Abstract

A pair of openings in the head of a snap fastener straddle the fastener's shank and allow access of a special tool to the fastener's latching members to facilitate removal of the fastener. It is particularly useful in blind installation-type situations where the workpieces joined by the fastener are accessible from only one side. Molded plastic fastener 10 (Fig. 1) has at its top or head 11, an integrally formed resilient compression washer 12 which is concentric with the shank 13. Bifurcated resilient latch members 14 are integrally formed at the bottom of shank 13. Fastener 10, when inserted into the aligned openings (not shown) of two adjacent workpieces (not shown) clamps the latter together between the undersurface 12A of washer 12 and the latch surfaces 14A of members 14.

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Snap Fastener for Blind Installations

A pair of openings in the head of a snap fastener straddle the fastener's shank and allow access of a special tool to the fastener's latching members to facilitate removal of the fastener. It is particularly useful in blind installation-type situations where the workpieces joined by the fastener are accessible from only one side. Molded plastic fastener 10 (Fig. 1) has at its top or head 11, an integrally formed resilient compression washer 12 which is concentric with the shank 13. Bifurcated resilient latch members 14 are integrally formed at the bottom of shank 13. Fastener 10, when inserted into the aligned openings (not shown) of two adjacent workpieces (not shown) clamps the latter together between the undersurface 12A of washer 12 and the latch surfaces 14A of members 14. The length of shank 13 is judiciously selected to be compatible with the overall thickness of the adjacent workpieces such that washer 12 is under compression when fastener 10 is installed. To install fastener 10, its members 14 are juxtaposed adjacent to and inserted into an opening (not shown) located on the outer accessible surface of the first workpiece (not shown). As a result, the wall of the opening (not shown) compresses the members 12 towards each other. The fastener 10 then continues to be pushed through the opening (not shown) of the first workpiece (not shown) and into the aligned opening (not shown) of the adjacent second workpiece (not shown). In response to the pushing movement, washer 12 contacts the outer surface of the first workpiece (not shown) and compresses (i.e., tends to flatten). This allows fastener 10 to be pushed further into the openings (not shown), such that the surfaces 14A clear the blind outer surface of the second workpiece (not shown). Thus, w...