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US 4,226,162 AGranted
Attachment for musical wind operated instruments
OwnerAlfred Ebachinventor
Life of this patent
Estimating the term…
Abstract
A device which consists of a hollow cylindrical member attachable to the end of a musical wind operated instrument. A stethoscope is located inside the hollow body and serves to pick up sounds issuing from the end of the muscial instrument. The hollow member is filled with dissimilar open cell polymeric foams between permeable felt discs.
Claims6
An attachment for a musical wind instrument, such as trumpet or the like which has a bell-type end, comprising
- a hollow body having rigid side walls and two unobstructed open ends, one end adapted to fit within the bell-type end of the trumpet,
- a stethoscope having membrane means and two earpieces, said membrane means being positioned within the hollow body between the ends of said body, said earpieces being located externally of said body,
- the internal volume of said body not occupied by said membrane means being filled with air-permeable acoustically damping material.
An attachment for a musical wind operated instrument, such as a trumpet or the like, comprising
- a hollow cylindrical body having unobstructed open ends and shaped such that an open end thereof may be brought into sealed communication with the bell of the instrument,
- means for securing the hollow cylindrical body to the bell of said instrument,
- a first permeable felt disc closing the opening of the hollow body to be adjacent the bell of said instrument, a second permeable felt disc near the opposite opening of the hollow cylindrical body and a third permeable felt disc dividing the hollow cylindrical body into two chambers,
- a stethoscope having a membrane, said membrane mounted within a first chamber, said first chamber lying between the first and third discs,
- permeable open cell polymeric foam completely filling said first chamber,
- permeable open cell rigid polymeric foam adjacent the second felt disc partly filling the other chamber between the second and third felt discs within the hollow cylindrical body, and
- permeable open cell flexible polymeric foam material completely filling the remainder of the other chamber between the rigid foam and third disc.
4 more elements
Dependencies are inferred from the claim text.