EP 3317730 A1 20180509 - SPIRAL SPRING AND METHOD FOR PRODUCING SAME
Title (en)
SPIRAL SPRING AND METHOD FOR PRODUCING SAME
Title (de)
SPIRALFEDER UND VERFAHREN ZU DEREN HERSTELLUNG
Title (fr)
RESSORT HÉLICOÏDAL ET PROCÉDÉ DE FABRICATION DUDIT RESSORT
Publication
Application
Priority
- DE 102015110796 A 20150703
- DE 102015111359 A 20150714
- DE 102015111605 A 20150717
- DE 102015112897 A 20150805
- IB 2016053970 W 20160701
Abstract (en)
[origin: WO2017006228A1] The invention relates to a spiral spring (4) and to a method for producing the spiral spring (4). The spiral spring (4) has at least one winding (9), which consists of a solid core (16) composed of a silicon material (32). The core (16) comprises two long parallel and straight sides (22) and two short parallel and straight sides (24O, 24U). At least the opposite long sides (22) of the core (16) are covered by a SiO2 layer (20). In the method, the windings (9) are etched from the silicon material such that the core (16) of the at least one winding (9) of the spiral spring (4) is formed and comprises two long parallel and straight sides (22) and two short parallel and straight sides (24O, 24U).
IPC 8 full level
G04B 17/06 (2006.01)
CPC (source: EP US)
C03C 15/00 (2013.01 - US); F16F 1/021 (2013.01 - US); F16F 1/024 (2013.01 - US); F16F 1/10 (2013.01 - US); G04B 17/066 (2013.01 - EP US); G04B 17/22 (2013.01 - EP US); F16F 2222/02 (2013.01 - US); F16F 2224/02 (2013.01 - US); F16F 2226/02 (2013.01 - US); F16F 2226/04 (2013.01 - US)
Citation (search report)
See references of WO 2017006228A1
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
DOCDB simple family (publication)
WO 2017006228 A1 20170112; EP 3317730 A1 20180509; EP 3989009 A1 20220427; US 2018142749 A1 20180524
DOCDB simple family (application)
IB 2016053970 W 20160701; EP 16747909 A 20160701; EP 21206957 A 20160701; US 201815860824 A 20180103