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Class Information
Number: 470/204
Name: Threaded, headed fastener, or washer making: process and apparatus > Implement, e.g., die, etc. > Tap > Thread swage
Description: Subject matter wherein the device is capable of forming screw threads by shaping cold metal.

Patents under this class:

Patent Number Title Of Patent Date Issued
8602696 Form tap having a plurality of lobes Dec. 10, 2013
7927221 Tool and method for the production of a thread Apr. 19, 2011
7815512 Thread forming tap and method for manufacturing the same Oct. 19, 2010
7575520 Tap and a method of tapping Aug. 18, 2009
7399231 Tool and method for producing a thread in a tool Jul. 15, 2008
7354350 Tools and methods for finishing a previously created thread without cutting Apr. 8, 2008
7112143 Thread former or tap Sep. 26, 2006
6688988 Looking thread cold forming tool Feb. 10, 2004
6685573 Thread forming tap Feb. 3, 2004
6514148 Thread rolling tap Feb. 4, 2003
6353989 Method of making recesses in metallic workpieces for use in torque transmitting apparatus Mar. 12, 2002
6217267 Cold forming tap having internal finish cutting edge and method of producing the same Apr. 17, 2001
5035019 Cold-forming tap Jul. 30, 1991
4826377 Self-locking fastener and tool for making same May. 2, 1989
4645396 Wood-metal drill screw Feb. 24, 1987
4539832 Hole sizing tool Sep. 10, 1985
4534690 Assymetrically shaped thread forming screw and method of making same Aug. 13, 1985
4491002 Method for forming on workpiece resilient thread having closed helical cavity inside the thread Jan. 1, 1985
4486135 Tapping screw Dec. 4, 1984
4409698 Tap for pressing elastic thread profiles Oct. 18, 1983
4351626 Self-locking threaded fastener Sep. 28, 1982
4315340 Method and apparatus for making a self-thread creating fastener Feb. 16, 1982
4271554 Combination drill and tap tool Jun. 9, 1981
4259889 Thread tapping form Apr. 7, 1981
3942406 Slab-sided self-tapping screw Mar. 9, 1976

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