U.S. Patent number: 4,550,316
Filed: Apr. 29, 1983
Issued: Oct. 29, 1985
Inventor: Whetstone et al.
Assignee: Display Interface Corp.
Instead of wheels, a transport sphere, or optical detectors, inventors Albert L. Whetstone and Kerry L. Shaklee designed a mouse with and embedded stylus. As you moved the mouse across a surface, the stylus would bend and vibrate. According to the patent, two methods could be used to measure this bending and vibration:
"Strain gauges, mounted directly to the stylus or to a diaphragm mounting the stylus, are used to ascertain bending and vibration. Photocell means are also disclosed to ascertain bending a [sic] vibration of the stylus."
Image taken from U.S. Patent 4,550,316 - Digitized by Google
Computer mouse evolution: Patent designs from the 1970s and 1980s
by Bill Detwiler | June 18, 2010, 10:43am PDT | Image 18 of 31
Stylus Mouse
Stylus Mouse - Image 18 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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