EP 4346504 A1 20240410 - INTERDENTAL BRUSH HAVING AN OVAL WIRE CROSS SECTION, AND METHOD FOR PRODUCING SAME
Title (en)
INTERDENTAL BRUSH HAVING AN OVAL WIRE CROSS SECTION, AND METHOD FOR PRODUCING SAME
Title (de)
INTERDENTALBÜRSTE MIT OVALEM DRAHTQUERSCHNITT UND VERFAHREN ZU DEREN HERSTELLUNG
Title (fr)
BROSSE INTERDENTAIRE AYANT UNE SECTION TRANSVERSALE DE FIL OVALE ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- EP 21177444 A 20210602
- EP 2022065109 W 20220602
Abstract (en)
[origin: WO2022253977A1] The present invention relates to an interdental brush (1, 1') having a brush part (2) that comprises two twisted-together legs (4A, 4B) of a wire portion (4) and brush filaments (5) held clamped between the legs (4A, 4B), and to a method for producing such an interdental brush (1, 1'). In order to improve in particular the bend fatigue limit of the wire portion (4), according to the invention a wire portion (4) made of austenitic steel is used that has a chromium content of 15 to 17 wt.%, a manganese content of 12 to 16 wt.% and a molybdenum content of 0 to 4 wt.%, and the wire portion (4) is formed having an oval cross section with an ovality O in a range between 0.4 and 0.9, wherein the ovality O is measured as a ratio between a length (LQk) of a small transverse axis (Qk) and a length of a large transverse axis (Qg) of the cross section.
IPC 8 full level
A46B 3/18 (2006.01); A46B 9/02 (2006.01); A46D 3/05 (2006.01)
CPC (source: EP KR US)
A46B 3/18 (2013.01 - EP KR US); A46B 9/021 (2013.01 - EP KR); A46B 9/04 (2013.01 - KR US); A46D 3/05 (2013.01 - EP KR); C22C 38/002 (2013.01 - KR); C22C 38/02 (2013.01 - KR); C22C 38/40 (2013.01 - KR); A46B 2200/108 (2013.01 - EP KR US)
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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022253977 A1 20221208; BR 112023024919 A2 20240220; CA 3222206 A1 20221208; EP 4346504 A1 20240410; JP 2024520133 A 20240521; KR 20240023028 A 20240220; US 2024245206 A1 20240725
DOCDB simple family (application)
EP 2022065109 W 20220602; BR 112023024919 A 20220602; CA 3222206 A 20220602; EP 22731645 A 20220602; JP 2023574360 A 20220602; KR 20237041717 A 20220602; US 202218566331 A 20220602