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Class Information
Number: 470/201
Name: Threaded, headed fastener, or washer making: process and apparatus > Implement, e.g., die, etc. > Tap > Collapsible
Description: Subject matter wherein the component is structured such that it may be readily retracted toward the axis of the device to allow its withdrawal from a formed hole without reversing any rotary motion of the device.

Sub-classes under this class:

Class Number Class Name Patents
470/202 Cam core 0
470/203 Wedge core 3

Patents under this class:

Patent Number Title Of Patent Date Issued
5281059 Tool for repairing damaged threads in a blind hole Jan. 25, 1994

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