EP 1094974 B1 20030212 - SLOTTED CLOSING VALVE FOR OPENINGS OF CONTAINERS
Title (en)
SLOTTED CLOSING VALVE FOR OPENINGS OF CONTAINERS
Title (de)
SCHLITZSCHLIESSVENTIL FÜR BEHÄLTERÖFFNUNGEN
Title (fr)
CLAPET DE FERMETURE A FENTE POUR OUVERTURES DE RECIPIENTS
Publication
Application
Priority
- DE 29907933 U 19990504
- EP 0003909 W 20000502
Abstract (en)
[origin: US6450375B1] A slit closure valve for container openings includes a membrane member of flexible material having an at least unidirectionally aligned slit-like outlet opening and a base member peripherally surrounding the membrane member and connected to the membrane member. The outlet opening is held in its closed position by the resilient properties of the material although it is adapted to be moved into its open position against the resilient bias force of the material by a predetermined differential positive pressure exerted on one side of the membrane member. A peripheral wall portion of the base member and an adjacent wall portion of the membrane member include therebetween an acute angle of less than 90'. At least one further, substantially peripherally aligned slit-like passage opening held in its closed position by the resilient properties of the material is provided in the membrane wall portion near the base member, said passage opening being adapted to be moved into its unblocking position by a differential negative pressure exerted on the membrane member from the side thereof subjected to said predetermined differential positive pressure. The valve thereby enables the pressure between the interior of a container and its surroundings to be equalized thus assisting in the restoration of the container after its walls have been pressed-in manually for emptying the contents of the container.
IPC 1-7
IPC 8 full level
B65D 35/50 (2006.01); B65D 47/20 (2006.01)
CPC (source: EP US)
B65D 47/2031 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6450375 B1 20020917; AT E232491 T1 20030215; AU 4915100 A 20001117; CA 2336552 A1 20001109; CN 1129542 C 20031203; CN 1302272 A 20010704; DE 29907933 U1 19990812; DE 50001233 D1 20030320; EP 1094974 A1 20010502; EP 1094974 B1 20030212; ES 2189757 T3 20030716; JP 2002543005 A 20021217; WO 0066447 A1 20001109
DOCDB simple family (application)
US 74303401 A 20010717; AT 00931094 T 20000502; AU 4915100 A 20000502; CA 2336552 A 20000502; CN 00800734 A 20000502; DE 29907933 U 19990504; DE 50001233 T 20000502; EP 0003909 W 20000502; EP 00931094 A 20000502; ES 00931094 T 20000502; JP 2000615292 A 20000502