Input apparatus scaled for non-adults and adults having small hands

• US 5,531,529 A
• Filed: 01/26/1995
• Issued: 07/02/1996
• Est. Priority Date: 09/07/1993
• Status: Expired due to Term

• Current Assignee: Dennis W. Nusser
• Original Assignee: Dennis W. Nusser
• Inventors: Nusser, Dennis W.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): NGUYEN, ANTHONY H
• Application Number:
  US08/378,946
• Time in Patent Office: 523 Days
• Field of Search: 400/472, 400/682, 341/21, 341/22
• US Class Current: 400/472
• CPC Class Codes: B41J 5/10 Arrangements of keyboards , e.g. key button disposition
• CPC Class Codes: G06F 3/0219 Special purpose keyboards

Abstract

Input apparatus scaled for non-adult humans and adult humans having small hands. The input apparatus are especially well suited for use as computer keyboards for use by schoolchildren. Also disclosed is a computing system including the input apparatus.

Claims

1. An ergonomic fixed key apparatus having keys for actuation by an operator for communicating to a processor, suitable for touch typing, said fixed key apparatus comprising:

a housing including a plurality of finger actuable keys, including alphanumeric keys, capable of being depressed through a keystroke travel range for generating desired inputs to be transmitted to the processor and arranged in substantially parallel rows to form an array;

wherein the horizontal key spacing of said alphanumeric keys is 60-86% of the range of 18 to 19 millimeters, centerline to centerline, the vertical key spacing of said alphanumeric keys is 60-86% of the range of 18 to 21 millimeters, centerline to centerline and the keystroke travel range of said alphanumeric keys is 60-86% of the range of 1.5 to 6.0 millimeters.

2. Fixed key input apparatus of claim 1 having individual key widths within the range of 7.2 mm to 13 mm.

3. Fixed key input apparatus of claim 1 having individual key depths within the range of 7.2 mm to 15 mm.

4. Fixed key input apparatus of claim 1 wherein the individual keys are arranged in a qwerty layout.

5. The ergonomic fixed key input apparatus of claim 1 wherein the percentage reduction for the horizontal and vertical key spacings is approximately equal.

6. The ergonomic fixed key input apparatus of claim 5 wherein the percentage reduction is 65% of the average for each range and the horizontal key spacing of said keys is 12.0 mm, centerline to centerline, and the vertical key spacing of said keys 12.7 mm.

7. The ergonomic fixed key input apparatus of claim 5 wherein the percentage reduction is 73% of the average for each range and the horizontal key spacing of said keys is 13.5 mm, centerline to centerline, and the vertical key spacing of said keys 14.3 mm.

8. The ergonomic fixed key input apparatus of claim 5 wherein the percentage reduction is 80% of the average for each range and the horizontal key spacing of said keys is 14.5 mm, centerline to centerline, and the vertical key spacing of said keys 15.6 mm.