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Class Information
Number: 470/9
Name: Threaded, headed fastener, or washer making: process and apparatus > Process > Making externally threaded fastener, e.g., screw or bolt > Screw
Description: Subject matter wherein the fastener comprises an externally threaded fastener having threads which converge to a point on an end of the fastener.

Sub-classes under this class:

Class Number Class Name Patents
470/10 Forming thread 73

Patents under this class:
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Patent Number Title Of Patent Date Issued
7975519 Wind turbine installation comprising an apparatus for protection of anchor bolts and method Jul. 12, 2011
7037204 Standard threaded torque fastener with novel indentation patterns to enhance torque and self-locking capabilities May. 2, 2006
6843729 Fastener having recess useable with multiple drivers and method of manufacture Jan. 18, 2005
6712708 Self-tapping screw, blank and method for joining thin workpieces and production method for the same Mar. 30, 2004
6648766 Cool-wrought pressing forming method for slotted headless screws Nov. 18, 2003
6475094 Method for making product and product having ultra high molecular weight plastic parts Nov. 5, 2002
6338600 Self-tapping, corrosion-resistant screw with hardened tip Jan. 15, 2002
6328657 Threaded fastener and a method of making same Dec. 11, 2001
6076437 Screw set in place and removed rapidly, its fabrication process and tool for its removal Jun. 20, 2000
5971860 Device for detecting faulty recesses Oct. 26, 1999
5906537 Five spindle fluting machine May. 25, 1999
5716280 Method for forming a fluted fastener Feb. 10, 1998
5597357 Self-drilling screw Jan. 28, 1997
5582548 Method of manufacture of anti-slip fastener Dec. 10, 1996
5562547 Self-attachment screw Oct. 8, 1996
5382195 Method for making a self-drilling and self-tapping screw Jan. 17, 1995
5360639 Method of providing a decorative pattern on a screw head Nov. 1, 1994
5308286 Device for manufacturing austenitic stainless steel drill screws May. 3, 1994
5186688 Method of manufacturing austenitic stainless steel drill screws Feb. 16, 1993
5171186 Method of manufacture of a long point drill screw Dec. 15, 1992
4947502 Method of making a dynamic tension bone screw Aug. 14, 1990
4865881 Apparatus and process for making locking slide nuts Sep. 12, 1989
4827756 Fastener fabrication method May. 9, 1989
4793201 Porous static pressure guide Dec. 27, 1988
4778637 Method of forming a composite fastener Oct. 18, 1988
4773111 Selectively hardened self drilling fasteners and process for making the same Sep. 27, 1988
4713855 Process for making self-drilling fasteners Dec. 22, 1987
4670927 Method and apparatus for forming the head of a high torque fastener Jun. 9, 1987
4615197 Thread rolling monitoring system Oct. 7, 1986
4589187 Method of manufacturing an insulating coupling for drill collars May. 20, 1986
4589154 Method and apparatus for forming the head of a high torque fastener May. 20, 1986
4577359 Method of manufacturing a drill screw Mar. 25, 1986
4565475 Drill point milling machine and method Jan. 21, 1986
4561277 Method of making screws and dies therefor Dec. 31, 1985
4544312 Pin and process for its manufacture Oct. 1, 1985
4534690 Assymetrically shaped thread forming screw and method of making same Aug. 13, 1985
4532663 Method of manufacturing a drill screw Aug. 6, 1985
4508759 Method and apparatus for making friction locking threaded fasteners Apr. 2, 1985
4485510 Threaded fastener having minimized length and weight and method to make it Dec. 4, 1984
4486135 Tapping screw Dec. 4, 1984
4428982 Thread lock Jan. 31, 1984
4368552 Method of making self tapping thread forming screw Jan. 18, 1983
4315340 Method and apparatus for making a self-thread creating fastener Feb. 16, 1982
4147088 Drill screw Apr. 3, 1979
4136597 Drill screw and die for producing same Jan. 30, 1979
4114507 Drill screw Sep. 19, 1978
4071918 Method of producing drill screws Feb. 7, 1978
4071067 Self-locking screw threads Jan. 31, 1978
4040328 Thread-forming fastener having dual lobulation and dies for making the same Aug. 9, 1977
4023225 Method of fabrication of headed-shank parts from high-strength two-phase titanium alloys May. 17, 1977

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