Harry C Goodwater

RE295809, Mar 14, 1978

Apr 5, 1973

5/348089

Harry C. Goodwater - San Francisco CA

Audio Alert Corporation - San Francisco CA

G08B 2100

340409

A low voltage audio fire alarm system fully integrated in a paging and music speaker system. The alarm circuits including pull-boxes and automatic fire, smoke and heat detection apparatus and the audio circuits are fully and continuously supervised against component failure by means of a plurality of current responsive relays. The audio path including the speaker system and associated amplifiers is continuously monitored by a low level supersonic 26KC signal. Fail-safe features utilizing multi-contact switches and relays are incorporated throughout the system to prevent inadvertent silencing of alarms in the absence of an alarm condition.

46046194, Aug 5, 1986

Sep 16, 1983

6/533097

Harry C. Goodwater - San Francisco CA

G05B 2302

34082518

A remote controlled switching apparatus for controlling the operation of a device having a plurality of modes of operation. In the apparatus there is provided a first switch assembly responsive to a positive potential for causing the apparatus to operate in a first mode of operation and a second switch assembly responsive to a negative potential for causing the apparatus to operate in a second mode of operation irrespective of the mode of operation in which the device is then currently operating. Automatic and manually controlled switch assemblies selectively provide the positive and negative potentials. Status indicators provide an indication of the current mode of operation of the device being controlled.