Manufacturing container or tube from paper; or other manufacturi – Assembling or disassembling of distinct members – Comprising bringing two members together
Reexamination Certificate
1998-03-23
2001-03-13
Johnson, Brian L. (Department: 3618)
Manufacturing container or tube from paper; or other manufacturi
Assembling or disassembling of distinct members
Comprising bringing two members together
C493S334000, C493S938000, C604S361000
Reexamination Certificate
active
06200250
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to diapers with devices for monitoring wetness, and particularly to processes and apparatuses for constructing such diapers.
BACKGROUND OF THE INVENTION
Various diapers have been developed with means for monitoring moisture or wetness. In diapers, the purpose of such devices is to set off an alarm when a diaper becomes wet. This permits a parent or other attendant to tend to a newborn infant or toddler. However such devices have disadvantages in that they may require current-carrying conductors to pass mechanically through the diaper's plastic outer sheath, may subject the skin of the wearer to direct voltages from a voltage source, may be sensitive only in a limited area, may accidentally respond to the wearer sitting on a wet or metal bench or park slide, or have other drawbacks.
SUMMARY OF THE INVENTION
An embodiment of the invention involves constructing a diaper that has internal electrodes for sensing wetness that are in contact with one or more elements of the absorbent material within a diaper, and an external holder to retain a detector module that is dielectrically isolated from the internal electrodes, and that allows non-conductive coupling between the detector module and the internal sensing electrodes.
According to an embodiment of the invention, the sensing electrodes are placed within a diaper to project along the interior surface of the backing sheet in contact with a tissue layer that is bonded to the backing sheet and extend opposite an elastic pouch that is bonded to the outside of the backing sheet. The pouch contains a detector module capacitively coupled to the electrodes.
The various features of novelty which characterize the invention are pointed out in the claims forming a part of this specification. Objects and advantages of the invention will become evident from the following detailed descriptions of embodiments of the invention when read in light of the following drawings.
REFERENCES:
patent: 5760694 (1998-06-01), Nissim et al.
patent: 5790036 (1998-08-01), Fisher et al.
patent: 5817076 (1998-10-01), Fard
patent: 5838240 (1998-11-01), Johnson
patent: 5908411 (1999-06-01), Matsunari
patent: 5947943 (1999-09-01), Lee
Johnson Brian L.
Knox Security Engineering Corporation
Luby Matthew
Stanger & Dreyfus, P.C.
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