Appeal No. 96-2520
Application 07/891,852
aluminum alloy with a high magnesium content. On pages 10 and
11 of the specifica- tion, Appellant discloses that Figure 1
shows the diaphragm 1 having a central cap 10, a cylindrical
portion 11, a waved portion 15 and a peripheral ring element
16.
Independent claim 1 is reproduced as follows:
1. A diaphragm electric-acoustic transducer, of the
movable-coil electrodynamic type, comprising a transducer
single piece diaphragm made of a high heat conductivity metal
material and having a thickness from 0.04 to 0.07 mm, said
diaphragm being anchored to a metal mass forming a support
unit and resiliently suspended on and coupled to said support-
ing unit, said diaphragm
including a corrugated portion providing a resilient suspen-
sion system, said diaphragm also including a peripheral ring
portion engaged under a top flat portion of said supporting
unit and a central region forming a cylindrical portion, said
cylindrical portion supporting a movable electrically conduc-
tive coil which closely contacts said high heat conductivity
metal material of said diaphragm so that, as said transducer
is operated, said coil transmits to said diaphragm heat gener-
ated by an acoustical current passing through said coil to
quickly and efficiently dissipate said heat by irradiation and
conduction through said metal mass;
a rubber damper element adapted to dampen said
diaphragm to change a residence characteristic of said trans-
ducer.
3
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Last modified: November 3, 2007