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Class Information
Number: 470/77
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 lever closer
Description: Subject matter wherein the elements are mounted to interact with a device in the form of a generally long slender body pivotable about a fixed fulcrum, i.e., a lever, such that movement of the lever causes 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
470/78 Cone type 0


Patents under this class:

Patent Number Title Of Patent Date Issued
5199928 Threading machine die head Apr. 6, 1993
4914663 Generation of short high peak power pulses from an injection mode-locked Q-switched laser oscillator Apr. 3, 1990
4485511 Die head with different axial tool paths Dec. 4, 1984
4370770 Cutting head for thread cutting machines Feb. 1, 1983
4023211 Apparatus for automatically forming threaded portion having predetermined taper and length for use in automatic threading machine May. 17, 1977
3977032 Screw-threaded cutting dieheads Aug. 31, 1976











 
 
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