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Class Information
Number: 411/438
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener > Internally threaded fastener element, e.g., nut, etc. > Thread structure > Coil spring
Description: Subject matter wherein the ridge is defined by the convolutions of a helical resilient element.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8142128 Anchor and method for anchoring Mar. 27, 2012
8021093 Locking threaded fastener Sep. 20, 2011
7862283 Tanged screw thread insert with improved removability Jan. 4, 2011
7441980 Device for joining two components with tolerance compensation Oct. 28, 2008
7165925 Self adjusting, high strength, screw system Jan. 23, 2007
7004702 System for connecting elements Feb. 28, 2006
6955513 Flexible fastener Oct. 18, 2005
6907961 Apparatus and method for retarding translation between two bodies Jun. 21, 2005
6860691 Self adjusting, high strength, screw system Mar. 1, 2005
6726422 Helically coiled titanium wire fastener inserts Apr. 27, 2004
6726421 Tanged screw thread inserts with improved removability Apr. 27, 2004
6685413 Connection element for connecting a bolt-supported part with the supporting bolt Feb. 3, 2004
6652209 Connection element Nov. 25, 2003
6551042 Spring collet clamp and method Apr. 22, 2003
6514257 Device for anchoring an elongated tensile flexible element for reconstruction of a torn ligament Feb. 4, 2003
6494659 Anti-galling fastener inserts Dec. 17, 2002
6494657 Self-adjusting, high strength, screw system Dec. 17, 2002
6461092 Anti-dead locking, anti-vibration and loosening-proof bolt/nut structure Oct. 8, 2002
6276883 Self adjusting screw system Aug. 21, 2001
6224311 Coated fastener inserts and method of producing the same May. 1, 2001
6171040 Thread insert having detachable tongue Jan. 9, 2001
6146073 Threaded insert made of wire Nov. 14, 2000
6129363 Drill chuck with plastic chuck body Oct. 10, 2000
5961266 Anti-vibration bolt and nut structure Oct. 5, 1999
5860779 Locking nut Jan. 19, 1999
5639195 Helical panel fastener Jun. 17, 1997
5555771 Fixing structure for mounting member of a nut Sep. 17, 1996
5449259 Thread locking device Sep. 12, 1995
5312214 Securing devices May. 17, 1994
5224739 Device for connecting a tailpipe to an exhaust pipe Jul. 6, 1993
5190270 Apparatus for erecting foundation reinforcing bars and the like Mar. 2, 1993
5101213 Screw type coupling device and an antenna installation device using the same Mar. 31, 1992
5098241 Variable length telescopic connector and method for use Mar. 24, 1992
5083890 Threaded coupling of two parts of different hardness Jan. 28, 1992
5006023 Strip-out preventing anchoring assembly and method of anchoring Apr. 9, 1991
4917554 Screw unit to join semi-rigid mats together Apr. 17, 1990
4842464 Equalization of load in threaded connections Jun. 27, 1989
4832550 Screw and nut device equipped with a rotation brake May. 23, 1989
4811618 Motion conversion mechanism Mar. 14, 1989
4810147 Fastener for plates Mar. 7, 1989
4801231 Self-driven nut and joinders incorporating it Jan. 31, 1989
4797045 Formation of a screw thread in mounting holes in furniture hardware made of sheet metal Jan. 10, 1989
4712955 Expandable fastener assembly Dec. 15, 1987
4645398 Tangless helically coiled insert Feb. 24, 1987
4635337 Method for removable anchor apparatus Jan. 13, 1987
4601092 Method of fixing a rail on a support of timber or cast or moulded material Jul. 22, 1986
4581871 Fastener and nosepiece for installing lath Apr. 15, 1986
4563119 Hook cutout for tangless helically coiled insert Jan. 7, 1986
4536115 Anchor apparatus for insertion into a pre-formed hole Aug. 20, 1985
4437286 Modular wall panel fastener assembly Mar. 20, 1984

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