Appeal No. 1999-0455
Application 08/635,483
stethoscope.
Representative claim 1 is reproduced as follows:
1. A stethoscope including an ear piece for detecting
sounds, comprising:
a chest piece including a body having ends, further
having a bore therein, running from one end to another end,
and detachable diaphragm structures and bell components,
wherein the diaphragm structures and bell components include
diaphragm structures and bell components of varying sizes so
that the stethoscope may be used with infants, or with adults,
connectable to each end of the chest piece;
a revolvable valve stem having ends, disposed
partially within the chest piece, so that one end of the valve
stem is within the chest piece and a single portion of the
valve stem protrudes from the chest piece, the valve stem
having means for transmitting sounds detected by the diaphragm
structures and bell components from one end of the valve stem
to the opposite end of the valve stem;
a single sound conducting tube having a range of 40 to
44 gram wall tubing connected at one end to the ear piece and
at the other end to the portion of the revolvable valve stem
which protrudes from said chest piece.
The examiner relies on the following references:
Tynan (Tynan ’087) 2,233,087 Feb. 25, 1941
Tynan (Tynan ’827) 2,513,827 July 04, 1950
Smithline 2,719,594 Oct. 04,
1955
Tynan (Tynan ’989) 2,722,989 Nov. 08, 1955
Kebel 3,035,656 May 22, 1962
Nelson 4,239,089 Dec. 16, 1980
The admitted prior art (Sprague).
2
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