Appeal No. 95-1844
Application 07/822,063
This is a decision on the appeal under 35 U.S.C. § 134
from the examiner's rejection of claims 1-27, which constitute
all the claims in the application.
The claimed invention pertains to a method and
apparatus for monitoring power drawn by an electrical
apparatus such as a pump.
Representative claim 1 is reproduced as follows:
1. Monitoring apparatus for monitoring power
exchanged with electrical apparatus comprising:
at least first and second conductors connected to said
electrical apparatus,
a multiplier having a current input coupled to at
least one of said conductors for receiving a current signal
representative of the current carried thereby, a voltage input
coupled to said at least one conductor for receiving a voltage
signal representative of the voltage between said first and
second conductors and a power output for providing a power
signal representative of the product of said current and
voltage signal,
and trip circuitry coupled to said power output for
providing a trip signal only when said power signal is outside
a predetermined range.
The examiner relies on the following references:
Lehrmann 3,054,952 Sep. 18, 1962
Leyde 4,034,233 July 05, 1977
Deffenbaugh 4,084,075 Apr. 11, 1978
Béjot et al. (Béjot) 4,419,625 Dec. 06, 1983
Garmong 4,473,338 Sep. 25, 1984
2
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