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US 4,323,145 AGranted
Vibration damping method and means having non-contacting sound damping means
OwnerClayton H. Alleninventor
Life of this patent
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Abstract
A non-contacting damping method and means for reducing vibrations in, and noise radiation from vibrating mechanisms, particularly saws and other mechanical members or materials with acoustically radiating surfaces that may be required to move with a substantially frictionless relation to the damping means is disclosed.
Claims31
Apparatus for damping vibrations in a vibrating surface having significant vibrational energy in the audio-frequency range above 100 Hz comprising,
- damping means for absorbing vibrational energy in the audiofrequency range above 100 Hz.
- means for supporting said damping means in close proximity to but normally slightly spaced from said vibrating surface and extending over a substantial portion of the area of said vibrating surface to embrace at least one of the highly vibrating areas of every significant mode to significantly reduce the audible sound energy radiated by said vibrating surface as compared with the audible sound energy radiated by said vibrating surface without said damping means,
- said damping means having a mating member with a mating face facing said vibrating surface,
- said mating face having cross dimensions comparable with the wavelength in the vibrating surface of at least some of the vibrational frequencies.
1 more element
Dependencies are inferred from the claim text.