U.S. Patent number: 4,623,787
Filed: Dec 5, 1983
Issued: Nov. 18, 1986
Inventor: Syng N. Kim
Asignee: Wico Corporation
Inventor Syng Kim sought to improve the design of traditional trackball mice by using "photoelectric transducer elements" to measure the rotation of the X and Y rotational shafts.
Image taken from U.S. Patent 4,623,787 - Digitized by Google
Computer mouse evolution: Patent designs from the 1970s and 1980s
by Bill Detwiler | June 18, 2010, 10:43am PDT | Image 24 of 31
Ball And Transducer Mounting Arrangement For Mouse
Ball And Transducer Mounting Arrangement For Mouse - Image 24 of 31
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About Bill Detwiler
Bill Detwiler is Head Technology Editor of TechRepublic. Previously, he worked as a Support Tech and IT Manager in the social research and energy industries.
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RE: X-Y Position Indicator For A Display System (Computer mouse evolution: Patent designs from the 1970s and 1980s)
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