Leo F Zschau

US Patent:

47713542, Sep 13, 1988

Filed:

May 21, 1986

Appl. No.:

6/865478

Inventors:

Leo F. Zschau - Marlborough MA

Assignee:

Lotus Development Corporation - Cambridge MA

International Classification:

G11B 23033
G11B 1904

US Classification:

360133

Abstract:

A write-protect clip can be permanently installed on a floppy disc and thereafter can be moved to an opened position which exposes the write-protect notch of the floppy disc or to a closed position which covers the notch. The clip, which is a unitary element made from a sheet of metal, includes first and second walls which slidably engage the outer surface of the envelope of the floppy disc, a back wall which connects the first and second walls, and a serpentine spring tongue which extends between the first and second walls and which is joined to one of the walls at a sharply bent region. When the clip is installed on a floppy disc, the tongue enters the envelope via the notch to prevent the clip from being inadvertently detached from the floppy disc and to enhance frictional engagement between the clip and the envelope, thereby helping to retain the clip in either the opened or the closed position. Moreover, the sharply bent region is positioned to engage the ends of the notch so that the clip cannot be inadvertently moved beyond the opened position or the closed position.