Handling: hand and hoist-line implements – Hand bars and hand barrows – Ball retriever
Reexamination Certificate
2002-03-14
2004-01-06
Lillis, Eileen D. (Department: 3652)
Handling: hand and hoist-line implements
Hand bars and hand barrows
Ball retriever
C294S024000
Reexamination Certificate
active
06672636
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a novel device for easy maintenance of smoke detectors, comprising a three dimensional receptacle or “cage” that attaches to a pole and fits around a smoke detector housing to easily remove it from its mounting plate.
BACKGROUND OF THE INVENTION
Smoke detectors detect the presence of smoke particles as an early indication of fire. Smoke detectors are used in closed structures such as houses, factories, offices, shops, ships, aircraft, and the like, with virtually every building being required by law to have some sort of early warning fire detection system. In general, smoke detectors are based on the principle of detecting smoke particles in the air. Thus, smoke detectors may include a chamber that admits a test atmosphere while blocking ambient light. A light receiver within the chamber receives a level of light from an emitter within the chamber, which light level is indicative of the amount of smoke contained in the test atmosphere. Different types of fires (depending on the materials being burned and the rate of burning) result in different sized smoke particles, which then are detected in a variety of ways, the most common of which is the detection of the blockage of a test light, usually solid-state optical receivers such as photodiodes.
While there are a wide variety of different mechanisms for the detection of smoke, from a consumer's point of view there are two types of smoke detectors. The first and most common, is the battery operated smoke detector. These are self contained, and most often utilize a mounting bracket of some sort which is attached to a ceiling or wall. The unit attaches in any number of ways to the mounting bracket. A light of some sort indicates the viability of the batteries, and when the batteries get low, or when other problems occur, the unit generally emits a loud and highly annoying noise, to signal that the batteries must be changed or the unit cleaned, etc. The consumer then generally mounts a ladder, the unit is then removed from the bracket manually, the batteries changed, and the unit remounted.
The second type of unit is one that is AC powered with a battery backup. These are more common in businesses such as hotels, as they allow the primary power source to be hard wired and the batteries are used only as a backup, thus significantly extending the battery life and allowing fewer maintenance trips.
All smoke detectors are generally mounted as high as possible within the room or area, due to the fact that heat and smoke rise, and thus the higher up they are mounted the earlier a fire may be detected. This fact, however, poses the problem the present invention addresses: how to easily service the smoke detector unit when it is mounted as high as possible. Currently, the only way to change the batteries in a smoke detector is to remove the unit manually, which requires the use of a ladder to access the unit.
Accordingly, it is an object of the present invention to provide a device and a method for easily servicing a smoke detector unit without the use of a ladder.
SUMMARY OF THE INVENTION
In accordance with the objects outlined above, the present invention provides smoke detector changing devices comprising a first base piece comprising an assembly slot and a second crosspiece, comprising an assembly tab for insertion into the assembly slot. Either the base piece or the crosspiece or the combination of the base piece and the crosspiece forms an asymmetrical insertion tab configured to fit into an asymmetrical slot in a smoke detector housing. The devices further comprise an attachment component attached to either the base piece or the crosspiece for the attachment of the device to a pole.
In an additional aspect, the present invention provides smoke detector changing devices comprising an engagement component comprising a receptacle configured to receive a smoke detector housing, the device comprising holder tabs to engage the housing and an attachment component for the attachment of the device to a pole.
In a further aspect, the present invention provides a smoke detector changing device comprising a base piece comprising an assembly slot, a crosspiece comprising an assembly tab for insertion into the assembly slot and an exterior mounting adapter bracket for attachment to a smoke detector. The bracket comprises an asymmetrical slot and adhesive mounts. Again, either the base piece or the crosspiece or the combination of the base piece or the crosspiece forms an asymmetrical insertion tab configured to fit into the asymmetrical slot and an attachment component attached to either the base piece or the crosspiece for the attachment of the device to a pole.
The devices all may be provided as kits with smoke detector units.
REFERENCES:
patent: 3748672 (1973-07-01), Patrick et al.
patent: 3900795 (1975-08-01), Larsen et al.
patent: 4074341 (1978-02-01), Niederost et al.
patent: 4350338 (1982-09-01), May
patent: 5563766 (1996-10-01), Long et al.
patent: 5596314 (1997-01-01), Goldstein
patent: 5617079 (1997-04-01), Harrison
patent: 5649255 (1997-07-01), Schieltz
patent: 5765453 (1998-06-01), Mims
patent: 2002/0066845 (2002-06-01), Pitlor
patent: 2003/0029279 (2003-02-01), Wantz
Dorsey & Whitney LLP
Lillis Eileen D.
Lowe Michael S.
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