| 摘要 |
474,745. Locking nuts. BRATT, D. May 7, 1936, No. 12930. Convention date, Jan. 7. [Class 89 (i)] For locking purposes the thread of a nut is cut so that the axis whilst the thread is being generated experiences a lateral displacement, whilst the relation between dy, dv is maintained constant. The resulting geometrical axis of the thread is therefore oblique to the base plane.
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