NASA NTRS · 19910000613
Lockwasher Strongly Resists Disassembly
Abstract
Lockwasher designed to prevent counter-rotation and loosening of machine screw once screw tightened. Tabs engage slots in pawl-and-ratchet fashion. Features similar to those of "childproof" cap on pill bottle. Intended to replace cup-washer-and-screwhead combination exposed to high-speed, turbulent flow in turbomachinery.
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Jeffers, Stephanie Z.. 1991-11-01. Lockwasher Strongly Resists Disassembly. https://ntrs.nasa.gov/citations/19910000613
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