Product provided with sound damping element

Details Product provided with sound damping element Product provided with sound damping element

1979-07-10

1981-10-27

Hix, L. T.

Acoustics

Sound-modifying means

Mechanical vibration attenuator

173DIG2, F16F 1500

Patent

active

042968305

ABSTRACT:
The invention relates to a product (1,9) of metal formed with a hole (5,8,17), particularly a rock drill steel, and provided with an element (10,12,14,15,16,18) for damping sound producing waves in the product annoying for the human ear. The sound damping element is arranged in the hole in the product and has a cross section less than the cross section of the hole. The damping element has at least one contact surface loosely arranged relative to the wall of the hole and located between the nodes of the waves so as to create at least one wave damping effect.

REFERENCES:
patent: 2051019 (1936-08-01), Arutunoff
patent: 3526293 (1970-09-01), Hayes et al.
patent: 3861494 (1975-01-01), Grego

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