Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-03-11
1999-06-29
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
340585, 340589, G08B 1700
Patent
active
059174161
ABSTRACT:
A temperature alarm system includes a temperature sensing module and an alarm circuit that are powered by a photocell and a battery that is charged by the photocell. The photocell normally provides enough power to operate the system and charge the battery. When the temperature sensing module senses a temperature that exceeds a predetermined alarm limit, it generates an alarm signal which activates an alarm circuit that generates a visual and/or audible alarm either immediately after the alarm signal is generated, or after the alarm signal has been generated for a period of time. The generation of the alarm signal and/or the alarm causes the system power consumption to increase, so the system begins to draw power from the battery. After the alarm condition is corrected, the system returns to normal power consumption, and the photocell provides enough power to operate the system and charge the battery.
REFERENCES:
patent: 3793825 (1974-02-01), Dickhart et al.
patent: 4250021 (1981-02-01), Kashima et al.
patent: 4256133 (1981-03-01), Coward et al.
patent: 4278841 (1981-07-01), Regennetter et al.
patent: 4410930 (1983-10-01), Yachabach
patent: 4853693 (1989-08-01), Eaton-Williams
patent: 4864763 (1989-09-01), Peikin
patent: 4882564 (1989-11-01), Monroe et al.
patent: 4918851 (1990-04-01), Peikin
patent: 5107123 (1992-04-01), Shi
patent: 5217064 (1993-06-01), Kellow et al.
patent: 5262758 (1993-11-01), Nam et al.
patent: 5608383 (1997-03-01), Neil
"Grainger Industrial and Commercial Equipment and Supplies 1994 General Catalog No. 385," pp. 700, 705.
Hofsass Jeffery A.
Trieu Van T.
LandOfFree
Easy to install temperature alarm system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Easy to install temperature alarm system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Easy to install temperature alarm system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1379057