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Class Information
Number: 470/63
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 head nicking > Punch and die type
Description: Subject matter wherein the component comprises an first element, i.e., a punch, cooperating with a second element, i.e., a die, whereby the notch, cut or indentation is produced a blow or thrust applied to the punch as the fastener is held between the punch and die.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7618327 |
Fastener with friction engageable surface |
Nov. 17, 2009 |
| 7404769 |
Spiral drive fastener with engagement ramp |
Jul. 29, 2008 |
| 6852037 |
Fastener having recess useable with multiple drivers and method of manufacture |
Feb. 8, 2005 |
| 6786827 |
Punch and manufacturing method for recessed head fastener |
Sep. 7, 2004 |
| 6755748 |
Screw head formation |
Jun. 29, 2004 |
| 6648766 |
Cool-wrought pressing forming method for slotted headless screws |
Nov. 18, 2003 |
| 6406376 |
Compound screw drive recesses mold |
Jun. 18, 2002 |
| 6390929 |
Method for making drive sockets |
May. 21, 2002 |
| 6234914 |
Punch for forming threaded fasteners with spiral drive |
May. 22, 2001 |
| 5904623 |
Apparatus for forming a slot in a semi-product of a bolt prior to thread formation |
May. 18, 1999 |
| 5203742 |
Punch for making such screw heads with slant rib |
Apr. 20, 1993 |
| 4670927 |
Method and apparatus for forming the head of a high torque fastener |
Jun. 9, 1987 |
| 4589154 |
Method and apparatus for forming the head of a high torque fastener |
May. 20, 1986 |
| 4160300 |
Hammer for forming an undercut fastener driving slot |
Jul. 10, 1979 |
| 4151621 |
Tools for punching fastener heads |
May. 1, 1979 |
| 4126908 |
Threaded fastener recess forming punch |
Nov. 28, 1978 |
| 4033003 |
Head forming method |
Jul. 5, 1977 |
| 4028918 |
Assembly for applying lubricant to the working area of a punching device |
Jun. 14, 1977 |
| 3972083 |
Punch for making recessed screw |
Aug. 3, 1976 |
| 3945071 |
Apparatus for cold forming recesses in the heads of screw fasteners |
Mar. 23, 1976 |
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