EP 0167863 B1 19880107 - CIGARETTE FILTER WITH VARIABLE VENTILATION
Title (en)
CIGARETTE FILTER WITH VARIABLE VENTILATION
Publication
Application
Priority
- DE 3422776 A 19840620
- DE 3516841 A 19850510
Abstract (en)
[origin: US4593707A] A variably ventilatable filter cigarette is provided with a filter body having a plurality of spaced circumferential, peripheral channels covered by a wrapping sheet at least a portion of which is air permeable, the wrapping sheet extending beyond the filter body to receive a cup-shaped member having an end wall with perforations alignable with the channels; the cup-shaped member is rotatable to vary the degree of registration with respect to the channels.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
A24D 3/041 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH FR GB IT LI LU NL
DOCDB simple family (publication)
US 4593707 A 19860610; CA 1226498 A 19870908; EP 0167863 A1 19860115; EP 0167863 B1 19880107; ES 287550 U 19860501; ES 287550 Y 19870116; ES 291377 U 19860516; ES 291377 Y 19870116; JP H0722502 B2 19950315; JP S6131075 A 19860213
DOCDB simple family (application)
US 74476585 A 19850614; CA 484639 A 19850620; EP 85107234 A 19850612; ES 287550 U 19850620; ES 291377 U 19851230; JP 13521485 A 19850620