Patent ID: 11866249
Assignee: KONINKLIJKE DOUWE EGBERTS B.V.
Field: Handling (Mechanical engineering)
Classification: CPC B  A | IPC A  B

Claim 25:
26. The system according to claim 1, wherein the free contact end of the annular element is provided with a plurality of radially extending open grooves, wherein a greatest width of each groove is 0.9-1.1 mm, preferably 0.95 to 1.05 mm, more preferably 0.98 to 1.02 mm, wherein a maximal height of each groove in an axial direction of the enclosing member of the beverage preparation device is 0.01-0.09 mm, preferably 0.03 to 0.07 mm, more preferably 0.045 to 0.055 mm, most preferred 0.05 mm and wherein the number of grooves is 90 to 110, preferably 96 and wherein optionally the radial width of the free contact end at the location of the grooves is 0.05-0.9 mm, preferably 0.2-0.7 mm and more preferably 0.3-0.55 mm.