EP 2486290 A1 20120815 - SELF LOCKING NUTS
Title (en)
SELF LOCKING NUTS
Title (de)
SELBSTSICHERNDE MUTTERN
Title (fr)
ECROUS AUTOBLOQUANTS
Publication
Application
Priority
- IT TO20090757 A 20091005
- IB 2010054488 W 20101005
Abstract (en)
[origin: WO2011042857A1] The present invention concerns self-locking nuts (1) comprising an upper threaded collar (3) provided with longitudinal slots (7), being V or U shaped, also with sharp edge, defining in the collar itself a plurality of circular arc segments (9) compressed by one or more turns of an external helical spring (5) made of a metal wire (5a), wherein the collar slots (7) have such a width as not to allow the mutual contact of the circular arc segments (9) compressed by the spring (5). The wire (5a) of the spring (5) is made of precipitation hardening stainless steel, and the nuts have values of unscrewing braking torque that differ from one another and are obtained, for nuts (1) having the same diameter, by modifying at least one dimensional parameter (Fd, Fj, 6) of the spring. The invention also concerns a method of manufacturing nuts according to the invention.
IPC 8 full level
F16B 39/22 (2006.01); F16B 39/284 (2006.01); F16B 39/36 (2006.01)
CPC (source: EP)
F16B 39/286 (2013.01)
Citation (search report)
See references of WO 2011042857A1
Citation (examination)
EP 2136089 A1 20091223 - GALLY S P A [IT]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011042857 A1 20110414; CN 102597545 A 20120718; EP 2486290 A1 20120815; IT 1396294 B1 20121116; IT TO20090757 A1 20110406
DOCDB simple family (application)
IB 2010054488 W 20101005; CN 201080045049 A 20101005; EP 10784852 A 20101005; IT TO20090757 A 20091005