Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-10-06
1994-09-20
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310339, 341 34, G06K 1118, H01L 4108
Patent
active
053492633
ABSTRACT:
A pointing device for use in moving a cursor displayed on a display, includes a pressure sensing sheet including first through fourth pressure detection elements and a base member mounted on the pressure sensing sheet. The base member is provided with first through fourth protrusions formed on its under surface opposite to the pressure sensing sheet in facing relation to the first through fourth pressure detection elements, respectively. The base member is provided with an operation shaft formed on an upper surface of the base member which projects upwardly therefrom. The device further comprises a cap member coupled to the operation shaft of the base member.
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IBM Technical Disclosure Bulletin vol. 28 No. 5 Oct., 1985, "Smart Key" pp. 1859-1860.
Iwasaki Jun-ichi
Katayama Sumio
Toi Shuichi
Usui Ichiro
Yanase Takashi
Dougherty Thomas M.
Mitsumi Electric Co. Ltd.
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