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Class Information
Number: 470/75
Name: Threaded, headed fastener, or washer making: process and apparatus > Apparatus for making externally threaded fastener or article, e.g., screw, bolt, etc. > Screw fastener making > Having thread cutting means > Having collapsible die > And cam operator
Description: Subject matter wherein the elements are mounted on and interact with a device in the form of an eccentrically shaped wheel mounted on a rotating shaft producing reciprocating motion causing the elements to open or close allowing for the insertion or removal of the fastener.

Sub-classes under this class:

Class Number Class Name Patents
470/76 Forming taper thread 11

Patents under this class:

Patent Number Title Of Patent Date Issued
5199928 Threading machine die head Apr. 6, 1993
4880340 Screw cutter die head Nov. 14, 1989
4329093 Die-head of cutting machine May. 11, 1982
4132495 Die head with workpiece actuated release Jan. 2, 1979

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