Stethoscope with frictional noise reduction

Details Stethoscope with frictional noise reduction Stethoscope with frictional noise reduction

2005-12-21

2010-10-05

Martin, Edgardo San (Department: 2832)

Acoustics

Anatomic or prosthetic relation

Ear and mouth

C381S067000, C600S528000

Reexamination Certificate

active

07806226

ABSTRACT:
A stethoscope is provided, comprising: a sound receiving member (12) for receiving sounds, the sound receiving member capable of transmitting sound received thereby; a head set coupled to the sound receiving member to receive sound transmitted by the sound receiving member; means for reducing frictional noise, said means associated with the sound receiving member to reduce noise caused by relative movement between a surface and the sound receiving member of the chestpiece in contact with the surface.

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ASTM D 1894—Standard Test Method for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting.

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