Patent ID: 11887573
Assignee: BERND-STEFFEN V. BERNSTORFF
Field: Other consumer goods (Other fields)
Classification: CPC G | IPC G

Claim 4:
5. The sound insulation element according to claim 4, wherein
within said section in which the envelope curve over the mode peaks is negatively skewed, a ratio

RDk={Dk/Dk−1}k=i,i−1,i−2, . . . ={Di/Di−1,Di−1/Di−2,Di−2/Di−3, . . . }, is bigger or equal to 1.2 and is smaller or equal to 2.1, such that

1.2≤RDk≤2.1,

wherein a number (Nk) assigned to the equivalent outer diameter (Dk) of an elected mode (k) is bigger than a number (Nk−1) assigned to the equivalent outer diameter (Dk−1) of an adjacent mode (k−1).