Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2011-08-23
2011-08-23
La, Anh V (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S693600
Reexamination Certificate
active
08004416
ABSTRACT:
A smoke alarm system having a base and a body. The base is mounted onto and electrically connected to an unswitched electrical box. The body contains conventional smoke alarm circuitry. The base contains a threaded female socket similar to a standard light bulb socket. The body contains a corresponding male threaded connector similar to that on a standard light bulb. The body is thus able to be electrically connected to as well as physically mounted to the base by simply screwing the male threaded connector into the female threaded socket in the same manner as a light bulb is screwed into a light socket. The base is installed on the ceiling with its wires extending into the unswitched electrical box. A metal ring on the bottom shoulder of the base is connected to the smoke alarm interconnect system. On top of the body are two metal spring-loaded tabs which are connected within the smoke alarm to its interconnect system. As the male portion of the unit is screwed into place these metal tabs make connection with the metal shoulder on the female portion of the unit completing the interconnect circuit. A light bulb changing device on a handle may be used to remove and reinstall the units while standing on the floor.
REFERENCES:
patent: 4329681 (1982-05-01), Parsons
patent: 4980672 (1990-12-01), Murphy
patent: 5149038 (1992-09-01), VanCleve
patent: 5432500 (1995-07-01), Scripps
patent: 5563766 (1996-10-01), Long et al.
patent: 5577696 (1996-11-01), Kramer
patent: 6644617 (2003-11-01), Pitlor
patent: 6859146 (2005-02-01), McGreal et al.
Bradley Cindy A.
Bradley, Jr. Arch C.
Cox, Jr. Ray F.
La Anh V
LandOfFree
Smoke 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 Smoke alarm system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smoke alarm system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2732224