| 摘要 |
<p>There is disclosed a robust on-off switch operated by a paddle, the lower edge of which pivots in and out about its top or upper edge, the lower edge being urged by bias means to be in its out position when the switch is in both the 'on state or position' and the 'off state or position.' The face of the switch is frameless and has, along its vertical axis, a contour of positive first differential and zero second differential, comprised of a combination of splines extending between points of varying distances from a datum plane. The contour has zero second differential when the rate of height increase of individual splines is constant.</p> |
