1984 - Volume #8, Issue #3, Page #27[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
Electric Appliance Lock
Harmison says other such devices on the market are extremely complicated. His first model consisted simply of a metal pin welded to a steel washer. The pin slips through the holes in the end of the prongs on the plug and the washer slips over the shank on the lock, making it impossible to use the plug. Harmison has patented the lock and hopes to find a market for it through the Iowa State University Research Foundation.
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