Noise reducing tool and method

Details Noise reducing tool and method Noise reducing tool and method

1989-12-05

1990-12-11

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Mechanical vibration attenuator

181208, 181290, 181296, 269900, F16F 1500

Patent

active

049763342

ABSTRACT:
The present noise reduction system provides a tool and a method to dampen the vibration of sheet material such as a panel, a metal sheet or a skin while performing a manufacturing operation on it, for instance riveting, drilling, etc. This noise reducing tool is held in place by vacuum and thus avoids the disadvantages associated with gluing and mechanical or magnetic fixing devices. This noise reducing tool includes a flexible pad made of a metal back sheet with a vibration damping sheet adhered to it and having an air seal surrounding the damping sheet such that the pad is held against the panel by action of a vacuum intermediate the damping sheet and the panel.

REFERENCES:
patent: 2424004 (1947-07-01), Terrell
patent: 2541159 (1951-02-01), Geiger
patent: 3016971 (1962-01-01), McPherson II
patent: 3160549 (1964-12-01), Caldwell et al.
patent: 3207503 (1965-09-01), Clover, Jr. et al.
patent: 3876034 (1975-04-01), Antonini
patent: 4023651 (1977-05-01), Healiss
patent: 4353433 (1982-10-01), Morenstein-Entel et al.
patent: 4516658 (1985-05-01), Scanton et al.

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