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

Claim 5:
6. 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 equal to (1+√5)/2 or to any integer divider of said value, such that

RDk=(1+√{square root over (5)})/2 or RDk=(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).