| 摘要 |
A lock washer assembly in which two washers are used in back-to-back relation. One face of each washer is serrated to form a series of circumferentially extending cam surfaces; the other face of each washer is flat and devoid of any projections or surface discontinuities. When the lock washers are arranged between a workpiece and a fastener element (nut or head of a bolt) the cam surfaces act as wedge lock devices; and any tendency of the fastener element to unloosen increases the contact pressure of the flat washer faces on the workpiece and fastener element.
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