Appeal No. 96-0548
Application 08/161,691
For the purposes of these rejections, Claims 54-58 stand
or fall together with Claim 54 because appellants have
presented no arguments for the separate patentability of the
claims under
37 CFR § 1.192.
Claim 54 reads as follows:
54. A battery warning circuit for a hearing aid
comprising:
detector means for generating an output signal in
response to a fall in battery voltage below a predetermined
threshold value, said output signal varying as a function of
said battery voltage once said battery voltage falls below
said predetermined threshold value;
oscillator means for generating an audio signal in
response to said output signal from said detector means, said
audio signal having at least one signal component which
increases as the voltage of said battery decreases, said
signal component selected from the group consisting of
amplitude and frequency.
Iwanaga teaches a battery warning circuit for use in any
battery operated implement. To indicate a low battery,
Iwanaga intermittently sounds a tone. This is illustrated in
Fig. 9b during time b’. When the battery becomes even lower,
Iwanaga sounds the tone at shorter intervals, i.e., faster.
This is illustrated in Fig. 9b during time c’.
5
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007