Browse Prior Art Database

Tactile Device for Pushbutton Switches

IP.com Disclosure Number: IPCOM000076020D
Original Publication Date: 1971-Dec-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Meier, HE: AUTHOR [+2]

Abstract

This spring configuration when added externally to any switch provides the tactile desired by human factors. The modified compression spring, Fig. 1 includes a protrusion 1 in the coil above the large lower loop 2. When the spring is compressed, the protrusion strikes the lower loop causing a force build up with the spring in the position as shown in Fig. 2. Added force applied to the spring causes the protrusion to snap past the lower coil, as shown in Fig. 3, providing both an audible indication as well as a sudden reduction in applied force.

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 100% of the total text.

Page 1 of 2

Tactile Device for Pushbutton Switches

This spring configuration when added externally to any switch provides the tactile desired by human factors. The modified compression spring, Fig. 1 includes a protrusion 1 in the coil above the large lower loop 2. When the spring is compressed, the protrusion strikes the lower loop causing a force build up with the spring in the position as shown in Fig. 2. Added force applied to the spring causes the protrusion to snap past the lower coil, as shown in Fig. 3, providing both an audible indication as well as a sudden reduction in applied force.

1

Page 2 of 2

2

[This page contains 1 picture or other non-text object]