Noise attenuating stethoscope

Claim 1

In a noise attenuating headset having first and second sound attenuating ear cups coupled to the end of a headband, a noise attenuating stethoscope comprising: a. A pair of ear tubes each having an ear piece coupled to a first end thereof, each of said ear tubes extending laterally through an aperture in the side of each ear cup; b. resilient swivel means disposed within the aperture and each ear cup and surrounding the outer surface of each ear tube for acoustically sealing said ear tubes and said ear cups and for coupling said ear tubes to the ear cups in an angularly deflectable and laterally displaceable mode; c. locking means mounted on each of said swivel means and operatively engageable with each of said ear tubes, said locking means comprising a bushing fixedly attached to said resilient swivel means and surrounding said outer surface of each of said ear tubes, a portion of said bushing extending outwardly from said ear cup, and moveable means engageable with said portion for compressing said portion into frictional engagement with said outer surface, whereby said ear tubes may be locked to prevent lateral displacement while still permiting angular deflection; d. a sound pick up; and e. a Y-shaped flexible conduit having a first end coupled to said sound pick up and second and third ends coupled to a second end of each ear tube.