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

Claim 8:
9. The sound insulation element according to claim 7, wherein
within said section in which the envelope curve over the mode peaks is positively 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 2/(1+√5) or to any integer divider of said value, such that

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

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).