Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Handle – handle component – or handle adjunct – Door handle
Reexamination Certificate
1999-10-18
2001-10-09
Knight, Anthony (Department: 3626)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Handle, handle component, or handle adjunct
Door handle
C016S413000, C016S904000, C604S890100
Reexamination Certificate
active
06298521
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to sanitizing devices generally and more particularly to devices for supplying an atmosphere surrounding a door knob which coats the surface of the knob and thereby reduces microbiological activity on the surface of the door knob.
DESCRIPTION OF PRIOR ART
The usual method of reducing microbiological activity on the surface of a door knob is to spray or wipe the same with a strong disinfectant. This presents a great problem in that it is inconvenient to do this on a consistent basis, and a periodic wipe or spray is not sufficient. Other devices such as seen in U.S. Pat. No. 4,856,140, provide a cover for the knob. The disadvantages of this are that the treated cover can readily slip on the knob when the latter is grasped and turned and there is no storage capacity for a supply of disinfectant. To remedy the slipping this above patent provides slots in the cover so that the fingers may grasp the underlying knob. The slots, however, appear to be disadvantageous because they are locations which can result in the cover tearing or being twisted out or shape and the fingers extending through the cover to contact the underlying knob which may not be adequately sanitized.
SUMMARY OF THE INVENTION
The above problems and difficulties are overcome by the present invention which supplies an atmosphere surrounding the graspable surface of the door knob by having a supply, adjacent to the graspable knob, of anti-microbiological material, which materials is a disinfectant material which sublimes to envelope the surface of the knob and thereby provide protection to the user of the knob by microbiological action. The material is a fairly thick gel which is in a holding device which is mounted adjacent the knob.
REFERENCES:
patent: D. 288714 (1987-03-01), Wilson et al.
patent: D. 427046 (2000-06-01), Mannix
patent: D. 435641 (2000-06-01), Clement et al.
patent: 1491780 (1924-04-01), Abbott
patent: 5383598 (1995-01-01), Styles
patent: 5407685 (1995-04-01), Malchesky et al.
Knight Anthony
Shall Harold D.
Williams Martz
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