Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 6233350 | Apparatus for viewing and inspecting a surface area of an object An apparatus for viewing and inspecting the surface area of an object, including a probe having a viewing window defining a field of view, and an image-forming lens within the probe. The probe also includes an image detector on an opposite side of the ima... | 05/15/2001 |
| 6122045 | Apparatus and method for viewing and inspecting a circumferential surface area of an object An apparatus (10) and method is provided for generating a 360° view of a surface area of a three-dimensional object, such as a wire or cable, and for inspecting the surface area for flaws or imperfections. A receiving lens (12) defines an optical axis (1... | 09/19/2000 |
| 5936725 | Apparatus and method for viewing and inspecting a circumferential surface area of a test object An apparatus and method is provided for generating a 360° view of a surface area of a three-dimensional object, such as a wire or cable, and for inspecting the surface area for flaws or imperfections. A receiving lens defines an optical axis extending th... | 08/10/1999 |
| 5311286 | Apparatus and method for optically measuring a surface An apparatus and method measures the roughness or some other surface dimension by transmitting a beam of light through a grating member at an angle of incidence relative to the grating member. The grating member has a plurality of parallel opaque bars and... | 05/10/1994 |
