Keyboard Patents

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A gallery of patents that describe technologies or illustrate designs relating to IBM and family keyboards, typewriters and keypunches. This includes keyswitch/actuator designs, ornamental designs (overall appearance), integrated pointing devices such as TrackPoints, and host systems such as PCs, laptops, terminals, consoles and electronic typewriters. All illustrations provided are from the patents themselves, which are believed to be within the public domain. A total of 112 patents have been recorded. The patent list is currently filtered to 2 patent(s).

U.S. Utility Patent 5,521,596 (US5521596A)

Applied 29 Nov 1990

Published 28 May 1996

Expired 28 May 2013

More info

Name	Analog input device located in the primary typing area of a keyboard
Inventors	Edwin J. Selker, Joseph D. Rutledge
Assignees	Unicomp
Description	An invention for a keyboard pointing device in either the form of a pointing stick placed between keys or an under-keycap mounted device, using strain gauges or various other sensor technologies. The stick idea was implemented as the IBM TrackPoint II (strain gauge) and 'Lexmark-Unicomp' (FSR) pointing sticks.

U.S. Utility Patent 5,694,123 (US5694123A)

A patent drawing of Lenovo's keyboard with integrated pointing device and click buttons with lock down for drag operation in a computer system with a graphical user interface in an exploded view

Applied 15 Sep 1994

Published 2 Dec 1997

Expired 2 Dec 2014

More info

Name	Keyboard with integrated pointing device and click buttons with lock down for drag operation in a computer system with a graphical user interface
Inventors	Edwin J. Selker, Michio Suzuki, Tomoyuki Takahaski, Yoshiharu Uchiyama
Description	An invention of a hinged laptop keyboard assembly with an integrated pointing stick and a pair of slide-locking mouse buttons to aid with click-and-drag operations. This was notably implemented as the Type V(B) Model M6-1 keyboard assembly for various IBM ThinkPads.