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  Ventilation apparatus and installationsUSPTO Application #: 20070000035Title: Ventilation apparatus and installations Abstract: A toilet ventilation apparatus in the form of a kit of parts has a hollow body providing an internal chamber and an opening at one end to provide an air inlet to the internal chamber, with provision for mounting the hollow body onto a w.c. pan below the rear of a pan seat with the opening directed forwardly of the w.c., and with a conduit for connection between the chamber and an extractor fan. The chamber has plural exit apertures for noxious air collected by the chamber, and one or more blanking members to close one or more of the exit apertures not in use, and the conduit is selectively connectable to any one of the exit apertures to convey odors from the chamber to the extractor fan. (end of abstract) Agent: Thomas M. Freiburger - Tiburon, CA, US Inventor: Robert Allan Carruthers Belcher USPTO Applicaton #: 20070000035 - Class: 004213000 (USPTO) Related Patent Categories: Baths, Closets, Sinks, And Spittoons, Ventilation, Electric-motor Pump The Patent Description & Claims data below is from USPTO Patent Application 20070000035. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] This application claims Convention priority from GB-0413825.1, filed Jun. 19, 2004. [0002] This invention relates to ventilation apparatus and in particular to ventilation apparatus for use in toilets to vitiate foul smelling air. [0003] The most usual ventilation installation currently in use in toilets comprises a wallmounted extractor fan with an inlet to the bathroom or toilet, i.e. to the room containing a w.c. (water closet) pan, and with an outlet to outside of that room. In order to extract quickly a substantial volume of air from the room, e.g. at least 6 liters/sec, such installations require large and/or powerful fans which are noisy, expensive and often unsightly. Alternative installations have been proposed which include a pan-mounted hollow body providing a chamber having an air inlet to the rear of the w.c. pan and below the seat (and any seat cover or lid thereon), this chamber being connected to the inlet of an extractor fan. Examples of such proposed installations have been described in WO-0042262, GB-2136030, GB-2330152 and GB-0845992. These suffer a number of disadvantages such as being unable to suit a wide variety of differently-dimensioned and/or differently constructed seat mounts, or of requiring modified forms of seat. These disadvantages arise especially where retro-fitting of such an installation is to be effected onto an existing w.c. installations and which may, but usually does not, comply with British Standard BS EN 37:1999 "Pedestal W.C. Pans with independent water supply-connecting dimensions". Under this BS--which is intended to provide some standardization and is applicable only to new installations, i.e. it is not retroactive--the pan is provided at its rear with two laterally spaced holes for fixing of the seat, these holes having a diameter of 15 mm.+-.2 mm and a spacing between their centers of 155 mm.+-.10 mm. [0004] It is therefore considered desirable to provide toilet ventilation apparatus that can overcome or at least minimize the above-mentioned and/or other disadvantages of prior art arrangements, and/or can enable the apparatus to be readily used in conjunction with a range of toilet installations. SUMMARY OF THE INVENTION [0005] According to a first aspect of this invention there is provided toilet ventilation apparatus comprising a hollow body providing a chamber therein and having an opening at one end to provide an air inlet to the chamber within the hollow body, means for mounting the hollow body onto a w.c. pan below the rear of a pan seat with said opening directed forwardly of the w.c., and conduit means for connection between the chamber and an extractor fan, characterized in that the chamber has a plurality N of exit apertures for noxious air collected by the chamber, a plurality N-1 of blanking members to close one or more of the exit apertures not in use, and in that the conduit means comprises a conduit element selectively connectable to any one of the exit apertures conveying noxious air from the chamber towards said extractor fan. [0006] Preferably said apparatus is provided in the form of a kit of parts including a plurality of different mounting means selectively utilizable for mounting the hollow body onto a w.c. pan. Said plurality of different mounting means may comprise: [0007] (a) one or more double-sided adherent pads for disposition between the rim of the w.c. pan and the underside of the hollow body, and [0008] (b) a pair of laterally extending lugs integral with, but separable from the hollow body and to be clamped between the pan and the seat by seat mounting bolts. [0009] Optionally, the mounting means (b) may further comprise a pair of hollow bushes of generally T-shaped axial cross-section serving as hollow "bolts" to fasten the lateral lugs of (b) to the w.c. pan to permit independent attachment of the seat by separate seat mounting bolts extending through the hollow bushes. [0010] According to a second aspect of this invention there is provided toilet ventilation apparatus in the form of a kit of parts including: [0011] a hollow body providing a chamber therein and having at one end an opening to provide an inlet to the chamber, said body being dimensioned to suit it for fitment onto a w.c. pan below the pan's seat; and [0012] at least first and second mounting means for the body and of which selectively all but one may be rendered redundant for said fitment. [0013] This enables a range of different possible mounting arrangements to be available to an installer of the kit and permits that installer to choose or select the arrangement most suited to the existing or new w.c. installation. [0014] Preferably said first and second mounting means comprise: [0015] (a) one or more double-sided adherent pads for disposition between the rim of the w.c. pan and the underside of the hollow body, and [0016] (b) a pair of laterally extending lugs integral with, but separable from the hollow body and to be clamped between the pan and the seat by seat mounting bolts. [0017] Optionally, the mounting means (b) may further comprise a pair of hollow bushes of generally T-shaped axial cross-section serving as hollow "bolts" to fasten the lateral lugs of (b) to the w.c. pan to permit independent attachment of the seat by separate seat mounting bolts extending through the hollow bushes. DESCRIPTION OF THE DRAWINGS [0018] By way of example one embodiment of this invention will now be described with reference to the accompanying drawings of which: [0019] FIG. 1 is a perspective view of apparatus embodying this invention and mounted on a w.c. pan. [0020] FIG. 2 is an exploded perspective view of the apparatus shown in FIG. 1 (minus the pan) viewed from another direction. Continue reading... Full patent description for Ventilation apparatus and installations Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Ventilation apparatus and installations patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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