Keyboard panel for an electric switch contact |
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| 申请号 | US49217074 | 申请日 | 1974-07-26 | 公开(公告)号 | US3930083A | 公开(公告)日 | 1975-12-30 |
| 申请人 | LITTON SYSTEMS INC; | 发明人 | PINKHAM PHILIP C; | ||||
| 摘要 | A keyboard panel having a rigid panel board with a plurality of apertures and a resilient material filling the apertures. The resilient material has a force transmitting and concentrating projection at each of the apertures so that the resilient material develops a tactile feel as it resists deformation. | ||||||
| 权利要求 | 1. A KEYBOARD PANEL COMPRISING: A. RIGID MEANS HAVING A PLURALITY OF APERTURES AND FURTHER HAVING FIRST AND SECOND SPACED-APART SURFACES, B. A LIP FLANGE EXTENDING FROM SAID RIGID MEANS RADIALLY INWARDLY INTO EACH OF SAID APERTURES, C. FLEXIBLE MEANS CARRIED BY SAID RIGID MEANS FILLING EACH OF SAID APERTURES SUBSTANTIALLY FLUSH WITH SAID FIRST SURFACE AND COVERING A SELECTED PORTION OF SAID SECOND SURFACE, SAID APERTURE LIP FLANGE RETAINING SAID FLEXIBLE MEANS TO SAID RIGID MEANS AT EACH OF SAID APERTURES, AND 2. The keyboard panel of claim 1 in which said rigid means is an apertured panel board. 3. The keyboard panel of claim 1 in which said flexible means is a resilient material. 4. The keyboard panel of claim 3 in which said resilient material is an elastomer. 5. The keyboard panel of Claim 1 in which said force transmitting and concentrating means is a projection of said flexible means at each of said apertures. 6. The keyboard panel of claim 5 in which said projection develops a mesa. 7. The keyboard panel of claim 1 in which said second surface is flush with said lip flanges. 8. The keyboard panel of claim 7 in which said flexible means has lateral portions suitably bonded to said second surface so that said flexible means provides an environmental seal. 9. The keyboard panel of claim 7 in which said flexible means is a resilient material bonded to said rigid means and further retained by said lip flange. |
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