Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Apparatus for treating solid article or material with fluid...
Patent
1989-09-05
1991-12-10
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Physical type apparatus
Apparatus for treating solid article or material with fluid...
422300, 15215, A61L 218, A47L 2326
Patent
active
050716280
DESCRIPTION:
BRIEF SUMMARY
The present invention is concerned with the problem presented by the need to protect residential premises against the introduction of pathogenic agents or infectious germs carried by the soles of shoes.
In order to solve this problem, it has already been proposed to provide disinfection devices which are intended to be placed at the entrance of premises instead of an ordinary sole-wiping doormat. One of these devices, described in patent FR 2,590,473, consists of a shallow tray which is intended to be placed on the ground and contains a relatively thick body of spongy material containing a disinfectant liquid. This spongy body is covered with a net which serves as a support for bristles and which is intended to constitute the receiving surface for shoes to be disinfected. Thus, when a person places his or her shoes on this surface, the person's weight causes compression of the spongy body containing the disinfection liquid. This latter is thus abruptly expelled from said spongy body, with the result that it impregnates the soles of shoes placed on the surface of the device considered.
However, although the design of a device of this type appears satisfactory from a theoretical standpoint, this is absolutely not the case from a practical point of view. In fact, with the solution thus contemplated, an excessive quantity of liquid is discharged onto the soles of shoes. This has a disadvantage in that it gives rise to excessive consumption of said liquid and consequently to the need for frequent re-supply of the spongy body with disinfection liquid. Moreover, when the shoes are too strongly impregnated, they are liable to produce stains and dirty marks on the floor of the corresponding premises, especially when this floor is covered with wall-to-wall carpet.
Moreover, by reason of the abruptness of compression of the spongy body under the action of a person's weight, upward squirting of the disinfection liquid frequently occurs. This results in dirty marks on the lower parts of clothing of the person who is standing on the device as well as on the floor and adjacent walls. This clearly constitutes an unacceptable drawback.
All the same disadvantages are again met with in the case of the device described in patent FR 2,381,152. In fact, this latter also comprises a relatively thick spongy body which is impregnated with disinfection liquid. Here again, it is the compression and deformation of said spongy body which causes expulsion of the disinfection liquid towards the soles of shoes placed on a perforated flexible sheet which covers the entire assembly.
It is for this reason that the present invention has for its object a disinfection device which is of the same general type but is so designed as to circumvent these disadvantages.
In the same manner as the devices recalled earlier, the present device comprises a reception surface for soles to be disinfected, beneath which provision is made for an element impregnated with a disinfection liquid, the complete assembly being contained in a shallow tray or the like which is intended to be placed on the ground. However, the device in accordance with the invention is characterized in that: disinfection liquid and provision is made above the level of this liquid for a rigid plate which bears on the bottom wall of the tray, for example by means of spacer members, ribs or the like, porous material or the like stretched over the rigid plate which serves as a support for this latter, and at least one of the edges of said sheet dips into the disinfection liquid contained in the tray, a perforated covering element or the like being placed over said impregnation sheet so as to constitute the reception surface for shoes to be disinfected.
Thus impregnation of shoe soles takes place by simple moistening as a result of rubbing contact with the reception surface which has already been moistened by the disinfection liquid, and not by abrupt expulsion of said liquid from a spongy body of substantial thickness under the action of compression of this latter. Furthermore, by virtue o
REFERENCES:
patent: 2604377 (1952-07-01), Eames
patent: 3578738 (1971-05-01), Hughes
Hampel Howard
Warden Robert J.
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