Patent ID: 11887573
Assignee: IGOR EMRI
Field: Other consumer goods (Other fields)
Classification: CPC G | IPC G

Claim 10:
11. The sound insulation element according to claim 4, wherein
within a section in which the envelope curve over the mode peaks is negatively skewed, ratios

RNk={Nk/Nk−1}k=i,i−1,i−2, . . . ={Ni/Ni−1,Ni−1/Ni−2, . . . }

are equal to (1+√5)/2 or to any integer multiplier of said value, such that

RNk=(1+√{square root over (5)})/2 or RNk=n*(1+√{square root over (5)})/2

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).