US Patent: 2,787,796
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| Method of Converting Standard Threads into Locking Threads
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Patentee:
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| Joseph Rosan (exact or similar names) - Newport Beach, Orange County, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 30, 1952 |
| Granted: |
Apr. 09, 1957 |
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Joel Havens
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Description: |
| Claim:
The method of converting the thread on a member having a standard thread with a truncated crown into an automatically locking thread cooperable with an unmodified mating thread of another member having a standard thread of corresponding size, comprising the step of applying force to the truncated crown of the thread in a direction transverse to the axis of the thread at a point about medially of the width of the crown to modify the shape of the crown by displacing the metal thereof laterally and radially sufficiently to increase the width and radial height of the thread at the crown and by an amount greater than the normal clearance that ysaid standard thread would have with an unmodified standard mating thread, whereby when another threaded member having a corresponding mating standard but unmodified thread is brought into threaded engagement with the modified thread, the expanded portion of the modified thread will frictionally bind against the unmodified thread and lock the threads together. |
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