Having structure to restrict rotation of threaded, mating pieces (e.g., nut lock) > Pawl and ratchet > Pawl carried by the internally threaded element > Patents

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Class Information
Number: 411/327
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener > Having structure to restrict rotation of threaded, mating pieces (e.g., nut lock) > Pawl and ratchet > Pawl carried by the internally threaded element
Description: Device wherein the pawl is positioned on the internally threaded element and rotates therewith to interlock with ratchet teeth on the externally threaded element.

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Patents under this class:

Patent Number	Title Of Patent	Date Issued
7445413	Screw-nut assembly including an integrated, immediately effective securing arrangement for preventing unintentional loosening of a screwed connection formed thereby	Nov. 4, 2008
7308763	Sealant cutting tool with quick release, repositionable blade	Dec. 18, 2007
6682281	Locking fastener apparatus	Jan. 27, 2004
6247884	Self-locking threaded plug	Jun. 19, 2001
5897277	Self-locking obturating device	Apr. 27, 1999
5728445	Fastening member	Mar. 17, 1998
4617118	Assemblies of conjoined parts	Oct. 14, 1986