发明名称 |
MODULAR TOUCH SENSITIVE DATA INPUT DEVICE |
摘要 |
<p>A touch sensitive data input device is provided for use with the screen of a cathode ray tube. The device has an annular bezel that loosely supports a firm clear backing plate. A rear transparent sheet element that has a coefficient of thermal expansion different from that of the backing plate is loosely retained against the backing plate to avoid deformations induced by differential thermal expansions. A closely spaced apart front transparent element is placed adjacent the rear transparent sheet, their respective adjacent surfaces having mutually orthogonal electrically conductive strips that make local electrical contact when a force is applied to the front element. An annular frame over the front element is secured to the bezel. In one aspect of the invention, a gasket with both sides coated with a resilient bonding material seals the frame to the bezel. In one aspect of the invention, a gasket with both sides coated with a resilient bonding material seals the frame to the bezel to protect the zone between the transparent front and rear elements from contamination by environmental pollutants.</p> |
申请公布号 |
CA1272776(A) |
申请公布日期 |
1990.08.14 |
申请号 |
CA19870535028 |
申请日期 |
1987.04.16 |
申请人 |
JOHN FLUKE MFG. CO., INC. |
发明人 |
BARBEE, PETER F.;GALLOWAY, JACK L. |
分类号 |
G06F3/041;G06F3/033;H01H13/702;H01H13/785;(IPC1-7):H01H9/08 |
主分类号 |
G06F3/041 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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