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  Toilet ventilation system with replacement filtrationUSPTO Application #: 20060277671Title: Toilet ventilation system with replacement filtration Abstract: A toilet ventilation system with replaceable filtration, the system comprised of a vented seat, a separate evacuation unit having a motor and fan within, the fan having a fan shroud with a restrictor, the shroud threadably attached to a filter housing with filter, the filter housing having a housing choke connected to a housing tube such that exiting air velocity is increased. The evacuation case has a threadably received vented cover, such that filter removal and replacement is provided for. A flexible collection tube connects the seat to the evacuation unit. (end of abstract) Agent: Crossley Patent Law - Montrose, CO, US Inventor: Floyd O. Jones USPTO Applicaton #: 20060277671 - Class: 004217000 (USPTO) Related Patent Categories: Baths, Closets, Sinks, And Spittoons, Ventilation, Seat Structure The Patent Description & Claims data below is from USPTO Patent Application 20060277671. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] A need has been established and solutions pursued for the ventilation of unpleasant odors from restroom facilities. The pursuits typically involve forced air ventilation from ceilings and upper walls. Other more recent designs address toilet seat ventilation. Various problems are associated with toilet seat ventilation. These problems include (a) what to do with the vented gasses, (b) how to power the ventilation, (c) filtration of ventilated gasses, (d) filter flow, and (e) access to filtration mechanisms. The present invention successfully solves these concerns. FIELD OF THE INVENTION [0002] The invention pertains to restroom ventilation and more specifically to a toilet ventilation system with replaceable filtration. SUMMARY OF THE INVENTION [0003] The general purpose of the toilet ventilation system with replaceable filtration, described subsequently in greater detail, is to provide a toilet ventilation system with replaceable filtration which has many novel features that result in an improved toilet ventilation system which is not anticipated, rendered obvious, suggested, or even implied by prior art, either alone or in combination thereof. [0004] The toilet ventilation system with replaceable filtration utilizes an existing toilet for mounting a replacement seat, after removing the existing seat. Mounting points are identical. The seat lid is typically attached via the hinge of the seat. Typical mounting points and hardware are used. The shape of the vented seat closely resembles that of the typical seat. The oval seat is also offered in examples which are closed or open in the front of the oval. The vented seat is comprised of a plurality of vent apertures. The apertures face medially from the interior of the oval seat, toward the center of the toilet. Apertures are numerous such that they easily acquire air to be vented without noisy operation. The apertures are positioned throughout the interior perimeter of the seat. [0005] The vented seat of the invention is injection molded, thereby offering more efficiently produced seats with the proper apertures and vent channel within. Injection molding also offers strength of design that might otherwise be lost with the vented seat. Seat examples vary to suit various existing restroom needs. The materials used in various examples are plastics, polymers, and fiberglass reinforced plastics (frp's). [0006] One example of the invention comprises a pressure switch for activating a connection to engage the fan motor. The switch mounts beneath the vented seat, between the seat and the existing toilet bowl. Another example features a timer for abbreviating the time that an existing ventilation fan runs. Still other examples feature a speed control for the fan motor. One example offers three motor speeds. [0007] The vented seat apertures collect gasses from the toilet bowl area. The apertures communicate with a vent channel comprising a substantial internal area of the vented seat. The vent channel communicates with the transfer port. The transfer port is disposed on the side of the seat and proximal to the rear of the seat. The gasses pass from the transfer port into a collection tube proximal to the rear of the seat. An attachment grommet is fitted to the transfer port. The collection tube securely fits within the attachment grommet. The collection tube is fully flexible. The flexibility of the collection tube enables pivoting of the seat without breaking the collection tube connection with the transfer port and grommet. [0008] The collection tube transfers gasses to the evacuation unit. The evacuation unit is comprised of an encased motor with fan and filter. The most complete example of the invention utilizes an activated charcoal filter. The filter is replaceable and easily accessed. The filter housing is accessed from an access cover on the side of the unit case of the evacuation unit. The unit case also has a removable vented cover. The vented cover screws onto the end of the unit case opposite the motor end of the case. Screwing the vented cover off of the case accesses the filter housing. The filter housing screws into the fan shroud. Screwing the filter housing out of the fan shroud provides access to the filter for replacement. The internally disposed fan shroud and filter housing are cylindrical. The fan shroud housing further comprises a shroud restrictor. The shroud restrictor is disposed at the shroud outlet. The shroud restrictor ensures proper air delivery from the fan shroud. The shroud outlet is in direct communication with the housing intake of the filter housing. The housing intake substantially matches the shroud restrictor in diameter, assisting in laminar gas flow. The filter housing is further comprised of a housing choke. The housing choke constricts the diameter of the filter housing. The housing choke is joined to the housing tube. The diameter of the housing tube matches that of the housing choke. Gas flow exits the housing tube. Gas flow passes out of the unit case via the cover vents in the vented cover of the unit case. [0009] The vented seat replaces a typical toilet seat. The evacuation unit is place as desired. Further examples of the invention offer longer collection tubes such that the evacuation unit can be positioned farther from the typical toilet. The evacuation unit is plugged into a standard electrical outlet. The invention is then ready for operation. Filters are replaced as desired. [0010] Thus has been broadly outlined the more important features of the toilet ventilation system so that the detailed description thereof that follows may be better understood and in order that the present contribution to the art may be better appreciated. [0011] Numerous objects, features and advantages of the toilet ventilation system with replaceable filtration will be readily apparent to those of ordinary skill in the art upon reading the following detailed description of presently preferred, but nonetheless illustrative, examples of the toilet ventilation system with replaceable filtration when taken in conjunction with the accompanying drawings. In this respect, before explaining the current examples of the toilet ventilation system with replaceable filtration in detail, it is to be understood that the invention is not limited in its application to the details of construction and arrangements of the components set forth in the following description or illustration. The invention is capable of other examples and of being practiced and carried out in various ways. It is also to be understood that the phraseology and terminology employed herein are for purposes of description and should not be regarded as limiting. [0012] Those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the design of other structures, methods and systems for carrying out the several purposes of the toilet ventilation system with replaceable filtration. It is therefore important that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. [0013] Objects of the toilet ventilation system with replaceable filtration, along with various novel features that characterize the invention are particularly pointed out in the claims forming a part of this disclosure. For better understanding of the toilet ventilation system, its operating advantages and specific objects attained by its uses, refer to the accompanying drawings and description. BRIEF DESCRIPTION OF THE DRAWINGS [0014] FIG. 1 is a perspective view of the invention installed on a typical toilet. [0015] FIG. 2 is a side elevation of the invention installed on a typical toilet. [0016] FIG. 3 is a cross sectional view of the evacuation unit. [0017] FIG. 4 is a cross sectional top view of the vented toilet seat and medially disposed inlet apertures. DETAILED DESCRIPTION OF THE DRAWINGS [0018] With reference now to the drawings, and in particular FIGS. 1 through 4 thereof, example of the pivot mounted toilet ventilation system employing the principles and concepts of the present invention and generally designated by the reference number 10 will be described. [0019] Referring to FIG. 1, the toilet ventilation system 10 for use with a typical toilet 56 is partially comprised of a vented seat 12. The vented seat 12 is partially comprised of a plurality of inlet apertures 13 within the seat 12. The inlet apertures 13 are disposed medially within the seat 12. The seat 12 attaches to the toilet 56 via the hinge 18. The seat 12 pivotally rests atop the toilet bowl 50. The hinge 18 mounts to the toilet 56 as did the original toilet seat (not shown). The seat lid 54 attaches to the hinge 18 in typical fashion. The seat lid 54 is open. The seat lid 54 matches the external shape of the seat 12. The toilet reservoir 52 remains as a part of the typical toilet 56. The evacuation unit 20 rests upon a surface (not shown) beside the toilet 56. The evacuation unit is powered by the power cord 39. The power cord 39 plugs into a standard electrical outlet (not shown). The evacuation unit 20 is connected to the vented seat 12 via the flexible collection tube 19. The evacuation unit case 22 covers the cylindrical evacuation unit 22. The access plate 24 is disposed on the side of the case 22. The end of the evacuation unit case 22 is further comprised of a vented cover 60. The cover vents 62 are disposed within a substantial portion of the vented cover 60. Continue reading... Full patent description for Toilet ventilation system with replacement filtration Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Toilet ventilation system with replacement filtration 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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