Browse Prior Art Database

Sloped Key Button

IP.com Disclosure Number: IPCOM000086330D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Pierson, DL: AUTHOR

Abstract

Key button 1, which is a part of keyboard 2, is so sloped with respect to pivot axis 4 for key button 1, with respect to the inclination of keyboard 2 and with respect to the contour of operator's finger 3 in the position thereof in which it is normally applied to key button 1, so that the pressure and operator's effort required to depress the key button is reduced.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 2

Sloped Key Button

Key button 1, which is a part of keyboard 2, is so sloped with respect to pivot axis 4 for key button 1, with respect to the inclination of keyboard 2 and with respect to the contour of operator's finger 3 in the position thereof in which it is normally applied to key button 1, so that the pressure and operator's effort required to depress the key button is reduced.

Key button 1 is fixed on lever 7 which is pivoted on pivot axis 4. Lever 7 is effective on spring 5 located below key button 1 so as to operate on keyboard switch 6 for closing switch 6 when the key button is depressed. Keyboard 2 is inclined at the angle a with respect to the horizontal. The main body of key button 1 extends perpendicular to keyboard 2, and axis 4 is located a distance y upwardly along keyboard 2 with respect to the center line x-x of key button 1.

The upper surface 1A of key button 1 extends in direction p at angle b with respect to keyboard 2, thus being sloped downwardly with respect to keyboard 2 and toward axis 4. Angles a and b are approximately equal so that key button surface 1A is approximately horizontal. Operator's finger 3 has the surface 3a effective for applying pressure to the key button extending substantially in the same direction q, parallel with the direction p. Key button 1 preferably is hollowed out on its upper surface to have a finger-receiving depression 1a in its upper surface.

In a normal depress operation of key button 1 by finger 3 which is moved in direction A,...