Metal working – Method of mechanical manufacture – Electrical device making
Patent
1990-05-22
1991-05-14
Echols, P. W.
Metal working
Method of mechanical manufacture
Electrical device making
29412, 73726, H01C 1700
Patent
active
050144154
ABSTRACT:
A first substrate having a working region, a flexible region, and a fixed region is prepared. Resistance elements are formed within the flexible region on a first surface of this substrate. A portion of the first substrate is removed. Thus, the flexible region is allowed to have flexibility. A second substrate is connected to a second surface of the first substrate. The second substrate is cut later into two portions of a working portion and a pedestal. The working portion is connected to the working region of the first substrate, and the pedestal is connected to the fixed region of the first substrate. In order to control displacements in upward and downward directions of the working portion, control substrates are further connected. A force applied to the working portion by acceleration or magnetism is detected as changes in the resistance values of the resistance elements.
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patent: 4454771 (1984-06-01), Shimazoe et al.
patent: 4649363 (1987-03-01), Starr
patent: 4771639 (1988-09-01), Saigusa et al.
patent: 4773972 (1988-09-01), Mikkor
patent: 4891985 (1990-01-01), Glenn
Echols P. W.
Wacoh Corporation
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