U.S. patents available from 1976 to present.
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...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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Class 213/42 - Tension


Subclass of Class 213 - Railway draft appliances
Definition: Devices wherein the springs are tension springs.
No. of patents: 1
Last issue date: 10/03/1978


NumberTitleIssue Date
4118020Spring assembly and method of assembly thereof
A spring assembly and a method of assembly therefor are provided wherein one or more longitudinal coil springs are retained between two end caps. Each end cap receives a hollow pin, each pin extending axially inwardly therefrom and abutting the other pin....
10/03/1978
 
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