EP 0953122 A1 19991103 - COILED STRIP SPRING AND ITS APPLICATION IN AN INJECTION DEVICE
Title (en)
COILED STRIP SPRING AND ITS APPLICATION IN AN INJECTION DEVICE
Title (de)
GEWICKELTE STREIFENFEDER UND DEREN BENUTZUNG IN EINEM INJEKTIONSGERÄT
Title (fr)
RESSORT A BANDE ENROULEE ET SON UTILISATION DANS UN DISPOSITIF D'INJECTION
Publication
Application
Priority
- GB 9800114 W 19980114
- GB 9700608 A 19970114
Abstract (en)
[origin: WO9830811A1] A coil spring of strip material is of non-uniform width. There may be a progressive taper from one end to the other, or there may be steps between portions (1, 2) of uniform width, each portion having a constant force characteristic. Other configurations are possible. For application to an injection device in which a capsule is spring-driven for its needle to project, and in which a piston in the capsule is then spring-driven to eject a dose, the spring has a wide portion (1) wound innermost which urges the capsule forwards, and a narrow portion (2) which then takes over to eject the dose.
IPC 1-7
IPC 8 full level
CPC (source: EP)
A61M 5/2033 (2013.01); F16F 1/10 (2013.01)
Citation (search report)
See references of WO 9830811A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 9830811 A1 19980716; EP 0953122 A1 19991103; GB 9700608 D0 19970305; JP 2001511234 A 20010807
DOCDB simple family (application)
GB 9800114 W 19980114; EP 98900894 A 19980114; GB 9700608 A 19970114; JP 53067798 A 19980114