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Briefcase-Portable Textwriter With 100-Key Full-Size Keyboard

IP.com Disclosure Number: IPCOM000043527D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Pechanek, GG: AUTHOR [+2]

Abstract

In its expanded arrangement for use, a textwriter 1 includes a first unit 2 having a standard "QWERTY" keyboard with fifty keys 3 (Fig. 2). The first unit 2 (Fig. 1) includes an upper support plate 4 (Fig. 2) supporting the keys 3 and a lower support plate 5 spaced from the upper support plate 4 with a flexible membrane switch 6 therebetween. The membrane switch 6 is formed of a suitable flexible material, such as MYLAR*, for example, and includes an upper circuit 7, a lower circuit 8, and a spacer 9. When one of the keys 3 is depressed, a portion of the upper circuit 7 makes contact with a specific portion of the lower circuit 8 through an opening in the spacer 9. A second unit 10 (Fig. 1) is disposed to the left of the first unit 2 and has the flexible membrane switch 6 (Fig.

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Briefcase-Portable Textwriter With 100-Key Full-Size Keyboard

In its expanded arrangement for use, a textwriter 1 includes a first unit 2 having a standard "QWERTY" keyboard with fifty keys 3 (Fig. 2). The first unit 2 (Fig. 1) includes an upper support plate 4 (Fig. 2) supporting the keys 3 and a lower support plate 5 spaced from the upper support plate 4 with a flexible membrane switch 6 therebetween. The membrane switch 6 is formed of a suitable flexible material, such as MYLAR*, for example, and includes an upper circuit 7, a lower circuit 8, and a spacer 9. When one of the keys 3 is depressed, a portion of the upper circuit 7 makes contact with a specific portion of the lower circuit 8 through an opening in the spacer 9. A second unit 10 (Fig. 1) is disposed to the left of the first unit 2 and has the flexible membrane switch 6 (Fig. 2) extending thereinto and between upper and lower support plates with a portion 11 (Fig. 1) functioning as a flexible connector between the unit 2 and the unit 10. A hinge 12 connects the first unit 10 to the portion 11 and a hinge 13 connects the first unit 2 to the portion 11. A third unit 14 is disposed on the right of the first unit 2 and is connected to the first unit 2 in the same manner as the second unit 10 is connected to the first unit 2. This arrangement enables each of the units 10 and 14 to be folded beneath the first unit 2, as shown in Fig. 3. Each of the units 10 and 14 contains twenty-five of the keys 3. Therefore, the units 2, 10, and 14 provide a hundred-key full-size keyboard since the keys 3 in each of the units 2, 10, and 14...